Merge pull request #4499 from crobibero/more-param

Reduce RequestHelpers.Split usage and remove RequestHelpers.GetGuids

21 files changed, 259 insertions, 271 deletions

diff --git a/Jellyfin.Api/Controllers/ArtistsController.cs b/Jellyfin.Api/Controllers/ArtistsController.cs
index 9bad206e0..f684c649a 100644
--- a/Jellyfin.Api/Controllers/ArtistsController.cs
+++ b/Jellyfin.Api/Controllers/ArtistsController.cs
@@ -89,24 +89,24 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
             [FromQuery] bool? isFavorite,
-            [FromQuery] string? mediaTypes,
-            [FromQuery] string? genres,
-            [FromQuery] string? genreIds,
-            [FromQuery] string? officialRatings,
-            [FromQuery] string? tags,
-            [FromQuery] string? years,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaTypes,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] genres,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] genreIds,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] officialRatings,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] tags,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] int[] years,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
             [FromQuery] string? person,
-            [FromQuery] string? personIds,
-            [FromQuery] string? personTypes,
-            [FromQuery] string? studios,
-            [FromQuery] string? studioIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] personIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] personTypes,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] studios,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] studioIds,
             [FromQuery] Guid? userId,
             [FromQuery] string? nameStartsWithOrGreater,
             [FromQuery] string? nameStartsWith,
@@ -131,30 +131,26 @@ namespace Jellyfin.Api.Controllers
                 parentItem = string.IsNullOrEmpty(parentId) ? _libraryManager.RootFolder : _libraryManager.GetItemById(parentId);
             }
 
-            var excludeItemTypesArr = RequestHelpers.Split(excludeItemTypes, ',', true);
-            var includeItemTypesArr = RequestHelpers.Split(includeItemTypes, ',', true);
-            var mediaTypesArr = RequestHelpers.Split(mediaTypes, ',', true);
-
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = excludeItemTypesArr,
-                IncludeItemTypes = includeItemTypesArr,
-                MediaTypes = mediaTypesArr,
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
+                MediaTypes = mediaTypes,
                 StartIndex = startIndex,
                 Limit = limit,
                 IsFavorite = isFavorite,
                 NameLessThan = nameLessThan,
                 NameStartsWith = nameStartsWith,
                 NameStartsWithOrGreater = nameStartsWithOrGreater,
-                Tags = RequestHelpers.Split(tags, '|', true),
-                OfficialRatings = RequestHelpers.Split(officialRatings, '|', true),
-                Genres = RequestHelpers.Split(genres, '|', true),
-                GenreIds = RequestHelpers.GetGuids(genreIds),
-                StudioIds = RequestHelpers.GetGuids(studioIds),
+                Tags = tags,
+                OfficialRatings = officialRatings,
+                Genres = genres,
+                GenreIds = genreIds,
+                StudioIds = studioIds,
                 Person = person,
-                PersonIds = RequestHelpers.GetGuids(personIds),
-                PersonTypes = RequestHelpers.Split(personTypes, ',', true),
-                Years = RequestHelpers.Split(years, ',', true).Select(int.Parse).ToArray(),
+                PersonIds = personIds,
+                PersonTypes = personTypes,
+                Years = years,
                 MinCommunityRating = minCommunityRating,
                 DtoOptions = dtoOptions,
                 SearchTerm = searchTerm,
@@ -174,9 +170,9 @@ namespace Jellyfin.Api.Controllers
             }
 
             // Studios
-            if (!string.IsNullOrEmpty(studios))
+            if (studios.Length != 0)
             {
-                query.StudioIds = studios.Split('|').Select(i =>
+                query.StudioIds = studios.Select(i =>
                 {
                     try
                     {
@@ -230,7 +226,7 @@ namespace Jellyfin.Api.Controllers
                 var (baseItem, itemCounts) = i;
                 var dto = _dtoService.GetItemByNameDto(baseItem, dtoOptions, null, user);
 
-                if (!string.IsNullOrWhiteSpace(includeItemTypes))
+                if (includeItemTypes.Length != 0)
                 {
                     dto.ChildCount = itemCounts.ItemCount;
                     dto.ProgramCount = itemCounts.ProgramCount;
@@ -297,24 +293,24 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
             [FromQuery] bool? isFavorite,
-            [FromQuery] string? mediaTypes,
-            [FromQuery] string? genres,
-            [FromQuery] string? genreIds,
-            [FromQuery] string? officialRatings,
-            [FromQuery] string? tags,
-            [FromQuery] string? years,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaTypes,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] genres,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] genreIds,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] officialRatings,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] tags,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] int[] years,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
             [FromQuery] string? person,
-            [FromQuery] string? personIds,
-            [FromQuery] string? personTypes,
-            [FromQuery] string? studios,
-            [FromQuery] string? studioIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] personIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] personTypes,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] studios,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] studioIds,
             [FromQuery] Guid? userId,
             [FromQuery] string? nameStartsWithOrGreater,
             [FromQuery] string? nameStartsWith,
@@ -339,30 +335,26 @@ namespace Jellyfin.Api.Controllers
                 parentItem = string.IsNullOrEmpty(parentId) ? _libraryManager.RootFolder : _libraryManager.GetItemById(parentId);
             }
 
-            var excludeItemTypesArr = RequestHelpers.Split(excludeItemTypes, ',', true);
-            var includeItemTypesArr = RequestHelpers.Split(includeItemTypes, ',', true);
-            var mediaTypesArr = RequestHelpers.Split(mediaTypes, ',', true);
-
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = excludeItemTypesArr,
-                IncludeItemTypes = includeItemTypesArr,
-                MediaTypes = mediaTypesArr,
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
+                MediaTypes = mediaTypes,
                 StartIndex = startIndex,
                 Limit = limit,
                 IsFavorite = isFavorite,
                 NameLessThan = nameLessThan,
                 NameStartsWith = nameStartsWith,
                 NameStartsWithOrGreater = nameStartsWithOrGreater,
-                Tags = RequestHelpers.Split(tags, '|', true),
-                OfficialRatings = RequestHelpers.Split(officialRatings, '|', true),
-                Genres = RequestHelpers.Split(genres, '|', true),
-                GenreIds = RequestHelpers.GetGuids(genreIds),
-                StudioIds = RequestHelpers.GetGuids(studioIds),
+                Tags = tags,
+                OfficialRatings = officialRatings,
+                Genres = genres,
+                GenreIds = genreIds,
+                StudioIds = studioIds,
                 Person = person,
-                PersonIds = RequestHelpers.GetGuids(personIds),
-                PersonTypes = RequestHelpers.Split(personTypes, ',', true),
-                Years = RequestHelpers.Split(years, ',', true).Select(int.Parse).ToArray(),
+                PersonIds = personIds,
+                PersonTypes = personTypes,
+                Years = years,
                 MinCommunityRating = minCommunityRating,
                 DtoOptions = dtoOptions,
                 SearchTerm = searchTerm,
@@ -382,9 +374,9 @@ namespace Jellyfin.Api.Controllers
             }
 
             // Studios
-            if (!string.IsNullOrEmpty(studios))
+            if (studios.Length != 0)
             {
-                query.StudioIds = studios.Split('|').Select(i =>
+                query.StudioIds = studios.Select(i =>
                 {
                     try
                     {
@@ -438,7 +430,7 @@ namespace Jellyfin.Api.Controllers
                 var (baseItem, itemCounts) = i;
                 var dto = _dtoService.GetItemByNameDto(baseItem, dtoOptions, null, user);
 
-                if (!string.IsNullOrWhiteSpace(includeItemTypes))
+                if (includeItemTypes.Length != 0)
                 {
                     dto.ChildCount = itemCounts.ItemCount;
                     dto.ProgramCount = itemCounts.ProgramCount;
diff --git a/Jellyfin.Api/Controllers/ChannelsController.cs b/Jellyfin.Api/Controllers/ChannelsController.cs
index ec9d7cdce..c4dc44cc3 100644
--- a/Jellyfin.Api/Controllers/ChannelsController.cs
+++ b/Jellyfin.Api/Controllers/ChannelsController.cs
@@ -198,7 +198,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? channelIds)
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] channelIds)
         {
             var user = userId.HasValue && !userId.Equals(Guid.Empty)
                 ? _userManager.GetUserById(userId.Value)
@@ -208,11 +208,7 @@ namespace Jellyfin.Api.Controllers
             {
                 Limit = limit,
                 StartIndex = startIndex,
-                ChannelIds = (channelIds ?? string.Empty)
-                    .Split(',')
-                    .Where(i => !string.IsNullOrWhiteSpace(i))
-                    .Select(i => new Guid(i))
-                    .ToArray(),
+                ChannelIds = channelIds,
                 DtoOptions = new DtoOptions { Fields = fields }
             };
 
diff --git a/Jellyfin.Api/Controllers/CollectionController.cs b/Jellyfin.Api/Controllers/CollectionController.cs
index eae06b767..2a342c2cb 100644
--- a/Jellyfin.Api/Controllers/CollectionController.cs
+++ b/Jellyfin.Api/Controllers/CollectionController.cs
@@ -4,6 +4,7 @@ using System.Threading.Tasks;
 using Jellyfin.Api.Constants;
 using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
+using Jellyfin.Api.ModelBinders;
 using MediaBrowser.Controller.Collections;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Net;
@@ -54,7 +55,7 @@ namespace Jellyfin.Api.Controllers
         [ProducesResponseType(StatusCodes.Status200OK)]
         public async Task<ActionResult<CollectionCreationResult>> CreateCollection(
             [FromQuery] string? name,
-            [FromQuery] string? ids,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] ids,
             [FromQuery] Guid? parentId,
             [FromQuery] bool isLocked = false)
         {
@@ -65,7 +66,7 @@ namespace Jellyfin.Api.Controllers
                 IsLocked = isLocked,
                 Name = name,
                 ParentId = parentId,
-                ItemIdList = RequestHelpers.Split(ids, ',', true),
+                ItemIdList = ids,
                 UserIds = new[] { userId }
             }).ConfigureAwait(false);
 
@@ -88,9 +89,11 @@ namespace Jellyfin.Api.Controllers
         /// <returns>A <see cref="NoContentResult"/> indicating success.</returns>
         [HttpPost("{collectionId}/Items")]
         [ProducesResponseType(StatusCodes.Status204NoContent)]
-        public async Task<ActionResult> AddToCollection([FromRoute, Required] Guid collectionId, [FromQuery, Required] string ids)
+        public async Task<ActionResult> AddToCollection(
+            [FromRoute, Required] Guid collectionId,
+            [FromQuery, Required, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] ids)
         {
-            await _collectionManager.AddToCollectionAsync(collectionId, RequestHelpers.GetGuids(ids)).ConfigureAwait(true);
+            await _collectionManager.AddToCollectionAsync(collectionId, ids).ConfigureAwait(true);
             return NoContent();
         }
 
@@ -103,9 +106,11 @@ namespace Jellyfin.Api.Controllers
         /// <returns>A <see cref="NoContentResult"/> indicating success.</returns>
         [HttpDelete("{collectionId}/Items")]
         [ProducesResponseType(StatusCodes.Status204NoContent)]
-        public async Task<ActionResult> RemoveFromCollection([FromRoute, Required] Guid collectionId, [FromQuery, Required] string ids)
+        public async Task<ActionResult> RemoveFromCollection(
+            [FromRoute, Required] Guid collectionId,
+            [FromQuery, Required, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] ids)
         {
-            await _collectionManager.RemoveFromCollectionAsync(collectionId, RequestHelpers.GetGuids(ids)).ConfigureAwait(false);
+            await _collectionManager.RemoveFromCollectionAsync(collectionId, ids).ConfigureAwait(false);
             return NoContent();
         }
     }
diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index 008bb58d1..c97a1ed14 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Linq;
 using Jellyfin.Api.Constants;
+using Jellyfin.Api.ModelBinders;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
@@ -50,8 +51,8 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<QueryFiltersLegacy> GetQueryFiltersLegacy(
             [FromQuery] Guid? userId,
             [FromQuery] string? parentId,
-            [FromQuery] string? includeItemTypes,
-            [FromQuery] string? mediaTypes)
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaTypes)
         {
             var parentItem = string.IsNullOrEmpty(parentId)
                 ? null
@@ -61,10 +62,11 @@ namespace Jellyfin.Api.Controllers
                 ? _userManager.GetUserById(userId.Value)
                 : null;
 
-            if (string.Equals(includeItemTypes, nameof(BoxSet), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, nameof(Playlist), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, nameof(Trailer), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, "Program", StringComparison.OrdinalIgnoreCase))
+            if (includeItemTypes.Length == 1
+                && (string.Equals(includeItemTypes[0], nameof(BoxSet), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], nameof(Playlist), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], nameof(Trailer), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], "Program", StringComparison.OrdinalIgnoreCase)))
             {
                 parentItem = null;
             }
@@ -78,8 +80,8 @@ namespace Jellyfin.Api.Controllers
             var query = new InternalItemsQuery
             {
                 User = user,
-                MediaTypes = (mediaTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
-                IncludeItemTypes = (includeItemTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
+                MediaTypes = mediaTypes,
+                IncludeItemTypes = includeItemTypes,
                 Recursive = true,
                 EnableTotalRecordCount = false,
                 DtoOptions = new DtoOptions
@@ -139,7 +141,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<QueryFilters> GetQueryFilters(
             [FromQuery] Guid? userId,
             [FromQuery] string? parentId,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery] bool? isAiring,
             [FromQuery] bool? isMovie,
             [FromQuery] bool? isSports,
@@ -156,10 +158,11 @@ namespace Jellyfin.Api.Controllers
                 ? _userManager.GetUserById(userId.Value)
                 : null;
 
-            if (string.Equals(includeItemTypes, nameof(BoxSet), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, nameof(Playlist), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, nameof(Trailer), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, "Program", StringComparison.OrdinalIgnoreCase))
+            if (includeItemTypes.Length == 1
+                && (string.Equals(includeItemTypes[0], nameof(BoxSet), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], nameof(Playlist), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], nameof(Trailer), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], "Program", StringComparison.OrdinalIgnoreCase)))
             {
                 parentItem = null;
             }
@@ -167,8 +170,7 @@ namespace Jellyfin.Api.Controllers
             var filters = new QueryFilters();
             var genreQuery = new InternalItemsQuery(user)
             {
-                IncludeItemTypes =
-                    (includeItemTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
+                IncludeItemTypes = includeItemTypes,
                 DtoOptions = new DtoOptions
                 {
                     Fields = Array.Empty<ItemFields>(),
@@ -192,10 +194,11 @@ namespace Jellyfin.Api.Controllers
                 genreQuery.Parent = parentItem;
             }
 
-            if (string.Equals(includeItemTypes, nameof(MusicAlbum), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, nameof(MusicVideo), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, nameof(MusicArtist), StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, nameof(Audio), StringComparison.OrdinalIgnoreCase))
+            if (includeItemTypes.Length == 1
+                && (string.Equals(includeItemTypes[0], nameof(MusicAlbum), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], nameof(MusicVideo), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], nameof(MusicArtist), StringComparison.OrdinalIgnoreCase)
+                    || string.Equals(includeItemTypes[0], nameof(Audio), StringComparison.OrdinalIgnoreCase)))
             {
                 filters.Genres = _libraryManager.GetMusicGenres(genreQuery).Items.Select(i => new NameGuidPair
                 {
diff --git a/Jellyfin.Api/Controllers/GenresController.cs b/Jellyfin.Api/Controllers/GenresController.cs
index 9c222135d..2dd504770 100644
--- a/Jellyfin.Api/Controllers/GenresController.cs
+++ b/Jellyfin.Api/Controllers/GenresController.cs
@@ -74,8 +74,8 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery] bool? isFavorite,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
@@ -96,8 +96,8 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = RequestHelpers.Split(excludeItemTypes, ',', true),
-                IncludeItemTypes = RequestHelpers.Split(includeItemTypes, ',', true),
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 StartIndex = startIndex,
                 Limit = limit,
                 IsFavorite = isFavorite,
@@ -133,7 +133,7 @@ namespace Jellyfin.Api.Controllers
                 result = _libraryManager.GetGenres(query);
             }
 
-            var shouldIncludeItemTypes = !string.IsNullOrEmpty(includeItemTypes);
+            var shouldIncludeItemTypes = includeItemTypes.Length != 0;
             return RequestHelpers.CreateQueryResult(result, dtoOptions, _dtoService, shouldIncludeItemTypes, user);
         }
 
diff --git a/Jellyfin.Api/Controllers/ItemsController.cs b/Jellyfin.Api/Controllers/ItemsController.cs
index 15d7bd0b8..177df22cf 100644
--- a/Jellyfin.Api/Controllers/ItemsController.cs
+++ b/Jellyfin.Api/Controllers/ItemsController.cs
@@ -159,7 +159,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? hasParentalRating,
             [FromQuery] bool? isHd,
             [FromQuery] bool? is4K,
-            [FromQuery] string? locationTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] LocationType[] locationTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] LocationType[] excludeLocationTypes,
             [FromQuery] bool? isMissing,
             [FromQuery] bool? isUnaired,
@@ -173,7 +173,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? hasImdbId,
             [FromQuery] bool? hasTmdbId,
             [FromQuery] bool? hasTvdbId,
-            [FromQuery] string? excludeItemIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] excludeItemIds,
             [FromQuery] int? startIndex,
             [FromQuery] int? limit,
             [FromQuery] bool? recursive,
@@ -181,34 +181,34 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? sortOrder,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
             [FromQuery] bool? isFavorite,
-            [FromQuery] string? mediaTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] imageTypes,
             [FromQuery] string? sortBy,
             [FromQuery] bool? isPlayed,
-            [FromQuery] string? genres,
-            [FromQuery] string? officialRatings,
-            [FromQuery] string? tags,
-            [FromQuery] string? years,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] genres,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] officialRatings,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] tags,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] int[] years,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
             [FromQuery] string? person,
-            [FromQuery] string? personIds,
-            [FromQuery] string? personTypes,
-            [FromQuery] string? studios,
-            [FromQuery] string? artists,
-            [FromQuery] string? excludeArtistIds,
-            [FromQuery] string? artistIds,
-            [FromQuery] string? albumArtistIds,
-            [FromQuery] string? contributingArtistIds,
-            [FromQuery] string? albums,
-            [FromQuery] string? albumIds,
-            [FromQuery] string? ids,
-            [FromQuery] string? videoTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] personIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] personTypes,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] studios,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] artists,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] excludeArtistIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] artistIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] albumArtistIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] contributingArtistIds,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] albums,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] albumIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] ids,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] VideoType[] videoTypes,
             [FromQuery] string? minOfficialRating,
             [FromQuery] bool? isLocked,
             [FromQuery] bool? isPlaceHolder,
@@ -219,12 +219,12 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? maxWidth,
             [FromQuery] int? maxHeight,
             [FromQuery] bool? is3D,
-            [FromQuery] string? seriesStatus,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] SeriesStatus[] seriesStatus,
             [FromQuery] string? nameStartsWithOrGreater,
             [FromQuery] string? nameStartsWith,
             [FromQuery] string? nameLessThan,
-            [FromQuery] string? studioIds,
-            [FromQuery] string? genreIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] studioIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] genreIds,
             [FromQuery] bool enableTotalRecordCount = true,
             [FromQuery] bool? enableImages = true)
         {
@@ -238,8 +238,9 @@ namespace Jellyfin.Api.Controllers
                 .AddClientFields(Request)
                 .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
-            if (string.Equals(includeItemTypes, "Playlist", StringComparison.OrdinalIgnoreCase)
-                || string.Equals(includeItemTypes, "BoxSet", StringComparison.OrdinalIgnoreCase))
+            if (includeItemTypes.Length == 1
+                && (includeItemTypes[0].Equals("Playlist", StringComparison.OrdinalIgnoreCase)
+                    || includeItemTypes[0].Equals("BoxSet", StringComparison.OrdinalIgnoreCase)))
             {
                 parentId = null;
             }
@@ -262,7 +263,7 @@ namespace Jellyfin.Api.Controllers
                 && string.Equals(hasCollectionType.CollectionType, CollectionType.Playlists, StringComparison.OrdinalIgnoreCase))
             {
                 recursive = true;
-                includeItemTypes = "Playlist";
+                includeItemTypes = new[] { "Playlist" };
             }
 
             bool isInEnabledFolder = user!.GetPreference(PreferenceKind.EnabledFolders).Any(i => new Guid(i) == item.Id)
@@ -291,14 +292,14 @@ namespace Jellyfin.Api.Controllers
                 return Unauthorized($"{user.Username} is not permitted to access Library {item.Name}.");
             }
 
-            if ((recursive.HasValue && recursive.Value) || !string.IsNullOrEmpty(ids) || !(item is UserRootFolder))
+            if ((recursive.HasValue && recursive.Value) || ids.Length != 0 || !(item is UserRootFolder))
             {
                 var query = new InternalItemsQuery(user!)
                 {
                     IsPlayed = isPlayed,
-                    MediaTypes = RequestHelpers.Split(mediaTypes, ',', true),
-                    IncludeItemTypes = RequestHelpers.Split(includeItemTypes, ',', true),
-                    ExcludeItemTypes = RequestHelpers.Split(excludeItemTypes, ',', true),
+                    MediaTypes = mediaTypes,
+                    IncludeItemTypes = includeItemTypes,
+                    ExcludeItemTypes = excludeItemTypes,
                     Recursive = recursive ?? false,
                     OrderBy = RequestHelpers.GetOrderBy(sortBy, sortOrder),
                     IsFavorite = isFavorite,
@@ -330,28 +331,28 @@ namespace Jellyfin.Api.Controllers
                     HasTrailer = hasTrailer,
                     IsHD = isHd,
                     Is4K = is4K,
-                    Tags = RequestHelpers.Split(tags, '|', true),
-                    OfficialRatings = RequestHelpers.Split(officialRatings, '|', true),
-                    Genres = RequestHelpers.Split(genres, '|', true),
-                    ArtistIds = RequestHelpers.GetGuids(artistIds),
-                    AlbumArtistIds = RequestHelpers.GetGuids(albumArtistIds),
-                    ContributingArtistIds = RequestHelpers.GetGuids(contributingArtistIds),
-                    GenreIds = RequestHelpers.GetGuids(genreIds),
-                    StudioIds = RequestHelpers.GetGuids(studioIds),
+                    Tags = tags,
+                    OfficialRatings = officialRatings,
+                    Genres = genres,
+                    ArtistIds = artistIds,
+                    AlbumArtistIds = albumArtistIds,
+                    ContributingArtistIds = contributingArtistIds,
+                    GenreIds = genreIds,
+                    StudioIds = studioIds,
                     Person = person,
-                    PersonIds = RequestHelpers.GetGuids(personIds),
-                    PersonTypes = RequestHelpers.Split(personTypes, ',', true),
-                    Years = RequestHelpers.Split(years, ',', true).Select(int.Parse).ToArray(),
+                    PersonIds = personIds,
+                    PersonTypes = personTypes,
+                    Years = years,
                     ImageTypes = imageTypes,
-                    VideoTypes = RequestHelpers.Split(videoTypes, ',', true).Select(v => Enum.Parse<VideoType>(v, true)).ToArray(),
+                    VideoTypes = videoTypes,
                     AdjacentTo = adjacentTo,
-                    ItemIds = RequestHelpers.GetGuids(ids),
+                    ItemIds = ids,
                     MinCommunityRating = minCommunityRating,
                     MinCriticRating = minCriticRating,
                     ParentId = string.IsNullOrWhiteSpace(parentId) ? Guid.Empty : new Guid(parentId),
                     ParentIndexNumber = parentIndexNumber,
                     EnableTotalRecordCount = enableTotalRecordCount,
-                    ExcludeItemIds = RequestHelpers.GetGuids(excludeItemIds),
+                    ExcludeItemIds = excludeItemIds,
                     DtoOptions = dtoOptions,
                     SearchTerm = searchTerm,
                     MinDateLastSaved = minDateLastSaved?.ToUniversalTime(),
@@ -360,7 +361,7 @@ namespace Jellyfin.Api.Controllers
                     MaxPremiereDate = maxPremiereDate?.ToUniversalTime(),
                 };
 
-                if (!string.IsNullOrWhiteSpace(ids) || !string.IsNullOrWhiteSpace(searchTerm))
+                if (ids.Length != 0 || !string.IsNullOrWhiteSpace(searchTerm))
                 {
                     query.CollapseBoxSetItems = false;
                 }
@@ -400,9 +401,9 @@ namespace Jellyfin.Api.Controllers
                 }
 
                 // Filter by Series Status
-                if (!string.IsNullOrEmpty(seriesStatus))
+                if (seriesStatus.Length != 0)
                 {
-                    query.SeriesStatuses = seriesStatus.Split(',').Select(d => (SeriesStatus)Enum.Parse(typeof(SeriesStatus), d, true)).ToArray();
+                    query.SeriesStatuses = seriesStatus;
                 }
 
                 // ExcludeLocationTypes
@@ -411,13 +412,9 @@ namespace Jellyfin.Api.Controllers
                     query.IsVirtualItem = false;
                 }
 
-                if (!string.IsNullOrEmpty(locationTypes))
+                if (locationTypes.Length > 0 && locationTypes.Length < 4)
                 {
-                    var requestedLocationTypes = locationTypes.Split(',');
-                    if (requestedLocationTypes.Length > 0 && requestedLocationTypes.Length < 4)
-                    {
-                        query.IsVirtualItem = requestedLocationTypes.Contains(LocationType.Virtual.ToString());
-                    }
+                    query.IsVirtualItem = locationTypes.Contains(LocationType.Virtual);
                 }
 
                 // Min official rating
@@ -433,9 +430,9 @@ namespace Jellyfin.Api.Controllers
                 }
 
                 // Artists
-                if (!string.IsNullOrEmpty(artists))
+                if (artists.Length != 0)
                 {
-                    query.ArtistIds = artists.Split('|').Select(i =>
+                    query.ArtistIds = artists.Select(i =>
                     {
                         try
                         {
@@ -449,29 +446,29 @@ namespace Jellyfin.Api.Controllers
                 }
 
                 // ExcludeArtistIds
-                if (!string.IsNullOrWhiteSpace(excludeArtistIds))
+                if (excludeArtistIds.Length != 0)
                 {
-                    query.ExcludeArtistIds = RequestHelpers.GetGuids(excludeArtistIds);
+                    query.ExcludeArtistIds = excludeArtistIds;
                 }
 
-                if (!string.IsNullOrWhiteSpace(albumIds))
+                if (albumIds.Length != 0)
                 {
-                    query.AlbumIds = RequestHelpers.GetGuids(albumIds);
+                    query.AlbumIds = albumIds;
                 }
 
                 // Albums
-                if (!string.IsNullOrEmpty(albums))
+                if (albums.Length != 0)
                 {
-                    query.AlbumIds = albums.Split('|').SelectMany(i =>
+                    query.AlbumIds = albums.SelectMany(i =>
                     {
                         return _libraryManager.GetItemIds(new InternalItemsQuery { IncludeItemTypes = new[] { nameof(MusicAlbum) }, Name = i, Limit = 1 });
                     }).ToArray();
                 }
 
                 // Studios
-                if (!string.IsNullOrEmpty(studios))
+                if (studios.Length != 0)
                 {
-                    query.StudioIds = studios.Split('|').Select(i =>
+                    query.StudioIds = studios.Select(i =>
                     {
                         try
                         {
@@ -533,12 +530,12 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? mediaTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaTypes,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery] bool enableTotalRecordCount = true,
             [FromQuery] bool? enableImages = true)
         {
@@ -569,13 +566,13 @@ namespace Jellyfin.Api.Controllers
                 ParentId = parentIdGuid,
                 Recursive = true,
                 DtoOptions = dtoOptions,
-                MediaTypes = RequestHelpers.Split(mediaTypes, ',', true),
+                MediaTypes = mediaTypes,
                 IsVirtualItem = false,
                 CollapseBoxSetItems = false,
                 EnableTotalRecordCount = enableTotalRecordCount,
                 AncestorIds = ancestorIds,
-                IncludeItemTypes = RequestHelpers.Split(includeItemTypes, ',', true),
-                ExcludeItemTypes = RequestHelpers.Split(excludeItemTypes, ',', true),
+                IncludeItemTypes = includeItemTypes,
+                ExcludeItemTypes = excludeItemTypes,
                 SearchTerm = searchTerm
             });
 
diff --git a/Jellyfin.Api/Controllers/LibraryController.cs b/Jellyfin.Api/Controllers/LibraryController.cs
index 1b115d800..3ff77e8e0 100644
--- a/Jellyfin.Api/Controllers/LibraryController.cs
+++ b/Jellyfin.Api/Controllers/LibraryController.cs
@@ -362,15 +362,14 @@ namespace Jellyfin.Api.Controllers
         [Authorize(Policy = Policies.DefaultAuthorization)]
         [ProducesResponseType(StatusCodes.Status204NoContent)]
         [ProducesResponseType(StatusCodes.Status401Unauthorized)]
-        public ActionResult DeleteItems([FromQuery] string? ids)
+        public ActionResult DeleteItems([FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] ids)
         {
-            if (string.IsNullOrEmpty(ids))
+            if (ids.Length == 0)
             {
                 return NoContent();
             }
 
-            var itemIds = RequestHelpers.Split(ids, ',', true);
-            foreach (var i in itemIds)
+            foreach (var i in ids)
             {
                 var item = _libraryManager.GetItemById(i);
                 var auth = _authContext.GetAuthorizationInfo(Request);
@@ -691,7 +690,7 @@ namespace Jellyfin.Api.Controllers
         [ProducesResponseType(StatusCodes.Status200OK)]
         public ActionResult<QueryResult<BaseItemDto>> GetSimilarItems(
             [FromRoute, Required] Guid itemId,
-            [FromQuery] string? excludeArtistIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] excludeArtistIds,
             [FromQuery] Guid? userId,
             [FromQuery] int? limit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields)
@@ -753,9 +752,9 @@ namespace Jellyfin.Api.Controllers
             };
 
             // ExcludeArtistIds
-            if (!string.IsNullOrEmpty(excludeArtistIds))
+            if (excludeArtistIds.Length != 0)
             {
-                query.ExcludeArtistIds = RequestHelpers.GetGuids(excludeArtistIds);
+                query.ExcludeArtistIds = excludeArtistIds;
             }
 
             List<BaseItem> itemsResult = _libraryManager.GetItemList(query);
diff --git a/Jellyfin.Api/Controllers/LiveTvController.cs b/Jellyfin.Api/Controllers/LiveTvController.cs
index 41eb4f030..410f3a340 100644
--- a/Jellyfin.Api/Controllers/LiveTvController.cs
+++ b/Jellyfin.Api/Controllers/LiveTvController.cs
@@ -150,7 +150,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableUserData,
-            [FromQuery] string? sortBy,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] sortBy,
             [FromQuery] SortOrder? sortOrder,
             [FromQuery] bool enableFavoriteSorting = false,
             [FromQuery] bool addCurrentProgram = true)
@@ -175,7 +175,7 @@ namespace Jellyfin.Api.Controllers
                     IsNews = isNews,
                     IsKids = isKids,
                     IsSports = isSports,
-                    SortBy = RequestHelpers.Split(sortBy, ',', true),
+                    SortBy = sortBy,
                     SortOrder = sortOrder ?? SortOrder.Ascending,
                     AddCurrentProgram = addCurrentProgram
                 },
@@ -539,7 +539,7 @@ namespace Jellyfin.Api.Controllers
         [ProducesResponseType(StatusCodes.Status200OK)]
         [Authorize(Policy = Policies.DefaultAuthorization)]
         public async Task<ActionResult<QueryResult<BaseItemDto>>> GetLiveTvPrograms(
-            [FromQuery] string? channelIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] channelIds,
             [FromQuery] Guid? userId,
             [FromQuery] DateTime? minStartDate,
             [FromQuery] bool? hasAired,
@@ -556,8 +556,8 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] string? sortBy,
             [FromQuery] string? sortOrder,
-            [FromQuery] string? genres,
-            [FromQuery] string? genreIds,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] genres,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] genreIds,
             [FromQuery] bool? enableImages,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
@@ -573,8 +573,7 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ChannelIds = RequestHelpers.Split(channelIds, ',', true)
-                    .Select(i => new Guid(i)).ToArray(),
+                ChannelIds = channelIds,
                 HasAired = hasAired,
                 IsAiring = isAiring,
                 EnableTotalRecordCount = enableTotalRecordCount,
@@ -591,8 +590,8 @@ namespace Jellyfin.Api.Controllers
                 IsKids = isKids,
                 IsSports = isSports,
                 SeriesTimerId = seriesTimerId,
-                Genres = RequestHelpers.Split(genres, '|', true),
-                GenreIds = RequestHelpers.GetGuids(genreIds)
+                Genres = genres,
+                GenreIds = genreIds
             };
 
             if (librarySeriesId != null && !librarySeriesId.Equals(Guid.Empty))
@@ -628,8 +627,7 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ChannelIds = RequestHelpers.Split(body.ChannelIds, ',', true)
-                    .Select(i => new Guid(i)).ToArray(),
+                ChannelIds = body.ChannelIds,
                 HasAired = body.HasAired,
                 IsAiring = body.IsAiring,
                 EnableTotalRecordCount = body.EnableTotalRecordCount,
@@ -646,8 +644,8 @@ namespace Jellyfin.Api.Controllers
                 IsKids = body.IsKids,
                 IsSports = body.IsSports,
                 SeriesTimerId = body.SeriesTimerId,
-                Genres = RequestHelpers.Split(body.Genres, '|', true),
-                GenreIds = RequestHelpers.GetGuids(body.GenreIds)
+                Genres = body.Genres,
+                GenreIds = body.GenreIds
             };
 
             if (!body.LibrarySeriesId.Equals(Guid.Empty))
@@ -703,7 +701,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableImages,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
-            [FromQuery] string? genreIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] genreIds,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
             [FromQuery] bool? enableUserData,
             [FromQuery] bool enableTotalRecordCount = true)
@@ -723,7 +721,7 @@ namespace Jellyfin.Api.Controllers
                 IsNews = isNews,
                 IsSports = isSports,
                 EnableTotalRecordCount = enableTotalRecordCount,
-                GenreIds = RequestHelpers.GetGuids(genreIds)
+                GenreIds = genreIds
             };
 
             var dtoOptions = new DtoOptions { Fields = fields }
diff --git a/Jellyfin.Api/Controllers/MusicGenresController.cs b/Jellyfin.Api/Controllers/MusicGenresController.cs
index 229d9ff02..8c6104302 100644
--- a/Jellyfin.Api/Controllers/MusicGenresController.cs
+++ b/Jellyfin.Api/Controllers/MusicGenresController.cs
@@ -74,8 +74,8 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery] bool? isFavorite,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
@@ -96,8 +96,8 @@ namespace Jellyfin.Api.Controllers
 
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = RequestHelpers.Split(excludeItemTypes, ',', true),
-                IncludeItemTypes = RequestHelpers.Split(includeItemTypes, ',', true),
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 StartIndex = startIndex,
                 Limit = limit,
                 IsFavorite = isFavorite,
@@ -123,7 +123,7 @@ namespace Jellyfin.Api.Controllers
 
             var result = _libraryManager.GetMusicGenres(query);
 
-            var shouldIncludeItemTypes = !string.IsNullOrWhiteSpace(includeItemTypes);
+            var shouldIncludeItemTypes = includeItemTypes.Length != 0;
             return RequestHelpers.CreateQueryResult(result, dtoOptions, _dtoService, shouldIncludeItemTypes, user);
         }
 
diff --git a/Jellyfin.Api/Controllers/PersonsController.cs b/Jellyfin.Api/Controllers/PersonsController.cs
index 6ac3e6417..9dc79b388 100644
--- a/Jellyfin.Api/Controllers/PersonsController.cs
+++ b/Jellyfin.Api/Controllers/PersonsController.cs
@@ -77,8 +77,8 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
-            [FromQuery] string? excludePersonTypes,
-            [FromQuery] string? personTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludePersonTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] personTypes,
             [FromQuery] string? appearsInItemId,
             [FromQuery] Guid? userId,
             [FromQuery] bool? enableImages = true)
@@ -97,8 +97,8 @@ namespace Jellyfin.Api.Controllers
             var isFavoriteInFilters = filters.Any(f => f == ItemFilter.IsFavorite);
             var peopleItems = _libraryManager.GetPeopleItems(new InternalPeopleQuery
             {
-                PersonTypes = RequestHelpers.Split(personTypes, ',', true),
-                ExcludePersonTypes = RequestHelpers.Split(excludePersonTypes, ',', true),
+                PersonTypes = personTypes,
+                ExcludePersonTypes = excludePersonTypes,
                 NameContains = searchTerm,
                 User = user,
                 IsFavorite = !isFavorite.HasValue && isFavoriteInFilters ? true : isFavorite,
diff --git a/Jellyfin.Api/Controllers/PlaylistsController.cs b/Jellyfin.Api/Controllers/PlaylistsController.cs
index 4b3d8d3d3..bc47ecbd1 100644
--- a/Jellyfin.Api/Controllers/PlaylistsController.cs
+++ b/Jellyfin.Api/Controllers/PlaylistsController.cs
@@ -63,11 +63,10 @@ namespace Jellyfin.Api.Controllers
         public async Task<ActionResult<PlaylistCreationResult>> CreatePlaylist(
             [FromBody, Required] CreatePlaylistDto createPlaylistRequest)
         {
-            Guid[] idGuidArray = RequestHelpers.GetGuids(createPlaylistRequest.Ids);
             var result = await _playlistManager.CreatePlaylist(new PlaylistCreationRequest
             {
                 Name = createPlaylistRequest.Name,
-                ItemIdList = idGuidArray,
+                ItemIdList = createPlaylistRequest.Ids,
                 UserId = createPlaylistRequest.UserId,
                 MediaType = createPlaylistRequest.MediaType
             }).ConfigureAwait(false);
@@ -87,10 +86,10 @@ namespace Jellyfin.Api.Controllers
         [ProducesResponseType(StatusCodes.Status204NoContent)]
         public async Task<ActionResult> AddToPlaylist(
             [FromRoute, Required] Guid playlistId,
-            [FromQuery] string? ids,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] ids,
             [FromQuery] Guid? userId)
         {
-            await _playlistManager.AddToPlaylistAsync(playlistId, RequestHelpers.GetGuids(ids), userId ?? Guid.Empty).ConfigureAwait(false);
+            await _playlistManager.AddToPlaylistAsync(playlistId, ids, userId ?? Guid.Empty).ConfigureAwait(false);
             return NoContent();
         }
 
@@ -122,9 +121,11 @@ namespace Jellyfin.Api.Controllers
         /// <returns>An <see cref="NoContentResult"/> on success.</returns>
         [HttpDelete("{playlistId}/Items")]
         [ProducesResponseType(StatusCodes.Status204NoContent)]
-        public async Task<ActionResult> RemoveFromPlaylist([FromRoute, Required] string playlistId, [FromQuery] string? entryIds)
+        public async Task<ActionResult> RemoveFromPlaylist(
+            [FromRoute, Required] string playlistId,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] entryIds)
         {
-            await _playlistManager.RemoveFromPlaylistAsync(playlistId, RequestHelpers.Split(entryIds, ',', true)).ConfigureAwait(false);
+            await _playlistManager.RemoveFromPlaylistAsync(playlistId, entryIds).ConfigureAwait(false);
             return NoContent();
         }
 
diff --git a/Jellyfin.Api/Controllers/SearchController.cs b/Jellyfin.Api/Controllers/SearchController.cs
index e75f0d06b..076fe58f1 100644
--- a/Jellyfin.Api/Controllers/SearchController.cs
+++ b/Jellyfin.Api/Controllers/SearchController.cs
@@ -5,6 +5,7 @@ using System.Globalization;
 using System.Linq;
 using Jellyfin.Api.Constants;
 using Jellyfin.Api.Helpers;
+using Jellyfin.Api.ModelBinders;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
@@ -82,9 +83,9 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? limit,
             [FromQuery] Guid? userId,
             [FromQuery, Required] string searchTerm,
-            [FromQuery] string? includeItemTypes,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? mediaTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaTypes,
             [FromQuery] string? parentId,
             [FromQuery] bool? isMovie,
             [FromQuery] bool? isSeries,
@@ -108,9 +109,9 @@ namespace Jellyfin.Api.Controllers
                 IncludeStudios = includeStudios,
                 StartIndex = startIndex,
                 UserId = userId ?? Guid.Empty,
-                IncludeItemTypes = RequestHelpers.Split(includeItemTypes, ',', true),
-                ExcludeItemTypes = RequestHelpers.Split(excludeItemTypes, ',', true),
-                MediaTypes = RequestHelpers.Split(mediaTypes, ',', true),
+                IncludeItemTypes = includeItemTypes,
+                ExcludeItemTypes = excludeItemTypes,
+                MediaTypes = mediaTypes,
                 ParentId = parentId,
 
                 IsKids = isKids,
diff --git a/Jellyfin.Api/Controllers/SessionController.cs b/Jellyfin.Api/Controllers/SessionController.cs
index e506ac7bf..6c9b9050e 100644
--- a/Jellyfin.Api/Controllers/SessionController.cs
+++ b/Jellyfin.Api/Controllers/SessionController.cs
@@ -160,12 +160,12 @@ namespace Jellyfin.Api.Controllers
         public ActionResult Play(
             [FromRoute, Required] string sessionId,
             [FromQuery, Required] PlayCommand playCommand,
-            [FromQuery, Required] string itemIds,
+            [FromQuery, Required, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] itemIds,
             [FromQuery] long? startPositionTicks)
         {
             var playRequest = new PlayRequest
             {
-                ItemIds = RequestHelpers.GetGuids(itemIds),
+                ItemIds = itemIds,
                 StartPositionTicks = startPositionTicks,
                 PlayCommand = playCommand
             };
@@ -378,7 +378,7 @@ namespace Jellyfin.Api.Controllers
         [ProducesResponseType(StatusCodes.Status204NoContent)]
         public ActionResult PostCapabilities(
             [FromQuery] string? id,
-            [FromQuery] string? playableMediaTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] playableMediaTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] GeneralCommandType[] supportedCommands,
             [FromQuery] bool supportsMediaControl = false,
             [FromQuery] bool supportsSync = false,
@@ -391,7 +391,7 @@ namespace Jellyfin.Api.Controllers
 
             _sessionManager.ReportCapabilities(id, new ClientCapabilities
             {
-                PlayableMediaTypes = RequestHelpers.Split(playableMediaTypes, ',', true),
+                PlayableMediaTypes = playableMediaTypes,
                 SupportedCommands = supportedCommands,
                 SupportsMediaControl = supportsMediaControl,
                 SupportsSync = supportsSync,
diff --git a/Jellyfin.Api/Controllers/StudiosController.cs b/Jellyfin.Api/Controllers/StudiosController.cs
index 27dcd51bc..af28b4f59 100644
--- a/Jellyfin.Api/Controllers/StudiosController.cs
+++ b/Jellyfin.Api/Controllers/StudiosController.cs
@@ -73,8 +73,8 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? searchTerm,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery] bool? isFavorite,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -94,13 +94,10 @@ namespace Jellyfin.Api.Controllers
 
             var parentItem = _libraryManager.GetParentItem(parentId, userId);
 
-            var excludeItemTypesArr = RequestHelpers.Split(excludeItemTypes, ',', true);
-            var includeItemTypesArr = RequestHelpers.Split(includeItemTypes, ',', true);
-
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = excludeItemTypesArr,
-                IncludeItemTypes = includeItemTypesArr,
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
                 StartIndex = startIndex,
                 Limit = limit,
                 IsFavorite = isFavorite,
@@ -125,7 +122,7 @@ namespace Jellyfin.Api.Controllers
             }
 
             var result = _libraryManager.GetStudios(query);
-            var shouldIncludeItemTypes = !string.IsNullOrEmpty(includeItemTypes);
+            var shouldIncludeItemTypes = includeItemTypes.Length != 0;
             return RequestHelpers.CreateQueryResult(result, dtoOptions, _dtoService, shouldIncludeItemTypes, user);
         }
 
diff --git a/Jellyfin.Api/Controllers/SuggestionsController.cs b/Jellyfin.Api/Controllers/SuggestionsController.cs
index ad64adfba..69292186e 100644
--- a/Jellyfin.Api/Controllers/SuggestionsController.cs
+++ b/Jellyfin.Api/Controllers/SuggestionsController.cs
@@ -4,6 +4,7 @@ using System.Linq;
 using Jellyfin.Api.Constants;
 using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
+using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
@@ -58,8 +59,8 @@ namespace Jellyfin.Api.Controllers
         [ProducesResponseType(StatusCodes.Status200OK)]
         public ActionResult<QueryResult<BaseItemDto>> GetSuggestions(
             [FromRoute, Required] Guid userId,
-            [FromQuery] string? mediaType,
-            [FromQuery] string? type,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaType,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] type,
             [FromQuery] int? startIndex,
             [FromQuery] int? limit,
             [FromQuery] bool enableTotalRecordCount = false)
@@ -70,8 +71,8 @@ namespace Jellyfin.Api.Controllers
             var result = _libraryManager.GetItemsResult(new InternalItemsQuery(user)
             {
                 OrderBy = new[] { ItemSortBy.Random }.Select(i => new ValueTuple<string, SortOrder>(i, SortOrder.Descending)).ToArray(),
-                MediaTypes = RequestHelpers.Split(mediaType!, ',', true),
-                IncludeItemTypes = RequestHelpers.Split(type!, ',', true),
+                MediaTypes = mediaType,
+                IncludeItemTypes = type,
                 IsVirtualItem = false,
                 StartIndex = startIndex,
                 Limit = limit,
diff --git a/Jellyfin.Api/Controllers/TrailersController.cs b/Jellyfin.Api/Controllers/TrailersController.cs
index 12a14a72c..41e1d0812 100644
--- a/Jellyfin.Api/Controllers/TrailersController.cs
+++ b/Jellyfin.Api/Controllers/TrailersController.cs
@@ -125,7 +125,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? hasParentalRating,
             [FromQuery] bool? isHd,
             [FromQuery] bool? is4K,
-            [FromQuery] string? locationTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] LocationType[] locationTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] LocationType[] excludeLocationTypes,
             [FromQuery] bool? isMissing,
             [FromQuery] bool? isUnaired,
@@ -139,7 +139,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] bool? hasImdbId,
             [FromQuery] bool? hasTmdbId,
             [FromQuery] bool? hasTvdbId,
-            [FromQuery] string? excludeItemIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] excludeItemIds,
             [FromQuery] int? startIndex,
             [FromQuery] int? limit,
             [FromQuery] bool? recursive,
@@ -147,33 +147,33 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? sortOrder,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFilter[] filters,
             [FromQuery] bool? isFavorite,
-            [FromQuery] string? mediaTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaTypes,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] imageTypes,
             [FromQuery] string? sortBy,
             [FromQuery] bool? isPlayed,
-            [FromQuery] string? genres,
-            [FromQuery] string? officialRatings,
-            [FromQuery] string? tags,
-            [FromQuery] string? years,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] genres,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] officialRatings,
+            [FromQuery, ModelBinder(typeof(PipeDelimitedArrayModelBinder))] string[] tags,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] int[] years,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
             [FromQuery] string? person,
-            [FromQuery] string? personIds,
-            [FromQuery] string? personTypes,
-            [FromQuery] string? studios,
-            [FromQuery] string? artists,
-            [FromQuery] string? excludeArtistIds,
-            [FromQuery] string? artistIds,
-            [FromQuery] string? albumArtistIds,
-            [FromQuery] string? contributingArtistIds,
-            [FromQuery] string? albums,
-            [FromQuery] string? albumIds,
-            [FromQuery] string? ids,
-            [FromQuery] string? videoTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] personIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] personTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] studios,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] artists,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] excludeArtistIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] artistIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] albumArtistIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] contributingArtistIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] albums,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] albumIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] ids,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] VideoType[] videoTypes,
             [FromQuery] string? minOfficialRating,
             [FromQuery] bool? isLocked,
             [FromQuery] bool? isPlaceHolder,
@@ -184,16 +184,16 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? maxWidth,
             [FromQuery] int? maxHeight,
             [FromQuery] bool? is3D,
-            [FromQuery] string? seriesStatus,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] SeriesStatus[] seriesStatus,
             [FromQuery] string? nameStartsWithOrGreater,
             [FromQuery] string? nameStartsWith,
             [FromQuery] string? nameLessThan,
-            [FromQuery] string? studioIds,
-            [FromQuery] string? genreIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] studioIds,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] genreIds,
             [FromQuery] bool enableTotalRecordCount = true,
             [FromQuery] bool? enableImages = true)
         {
-            var includeItemTypes = "Trailer";
+            var includeItemTypes = new[] { "Trailer" };
 
             return _itemsController
                 .GetItems(
diff --git a/Jellyfin.Api/Controllers/UniversalAudioController.cs b/Jellyfin.Api/Controllers/UniversalAudioController.cs
index 9820c401a..255532307 100644
--- a/Jellyfin.Api/Controllers/UniversalAudioController.cs
+++ b/Jellyfin.Api/Controllers/UniversalAudioController.cs
@@ -7,6 +7,7 @@ using System.Threading.Tasks;
 using Jellyfin.Api.Attributes;
 using Jellyfin.Api.Constants;
 using Jellyfin.Api.Helpers;
+using Jellyfin.Api.ModelBinders;
 using Jellyfin.Api.Models.StreamingDtos;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller.Devices;
@@ -96,7 +97,7 @@ namespace Jellyfin.Api.Controllers
         [ProducesAudioFile]
         public async Task<ActionResult> GetUniversalAudioStream(
             [FromRoute, Required] Guid itemId,
-            [FromQuery] string? container,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] container,
             [FromQuery] string? mediaSourceId,
             [FromQuery] string? deviceId,
             [FromQuery] Guid? userId,
@@ -261,7 +262,7 @@ namespace Jellyfin.Api.Controllers
         }
 
         private DeviceProfile GetDeviceProfile(
-            string? container,
+            string[] containers,
             string? transcodingContainer,
             string? audioCodec,
             string? transcodingProtocol,
@@ -273,7 +274,6 @@ namespace Jellyfin.Api.Controllers
         {
             var deviceProfile = new DeviceProfile();
 
-            var containers = RequestHelpers.Split(container, ',', true);
             int len = containers.Length;
             var directPlayProfiles = new DirectPlayProfile[len];
             for (int i = 0; i < len; i++)
@@ -330,7 +330,7 @@ namespace Jellyfin.Api.Controllers
             if (conditions.Count > 0)
             {
                 // codec profile
-                codecProfiles.Add(new CodecProfile { Type = CodecType.Audio, Container = container, Conditions = conditions.ToArray() });
+                codecProfiles.Add(new CodecProfile { Type = CodecType.Audio, Container = string.Join(',', containers), Conditions = conditions.ToArray() });
             }
 
             deviceProfile.CodecProfiles = codecProfiles.ToArray();
diff --git a/Jellyfin.Api/Controllers/UserLibraryController.cs b/Jellyfin.Api/Controllers/UserLibraryController.cs
index 2a6547bbb..0e65591cc 100644
--- a/Jellyfin.Api/Controllers/UserLibraryController.cs
+++ b/Jellyfin.Api/Controllers/UserLibraryController.cs
@@ -269,7 +269,7 @@ namespace Jellyfin.Api.Controllers
             [FromRoute, Required] Guid userId,
             [FromQuery] Guid? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
             [FromQuery] bool? isPlayed,
             [FromQuery] bool? enableImages,
             [FromQuery] int? imageTypeLimit,
@@ -296,7 +296,7 @@ namespace Jellyfin.Api.Controllers
                 new LatestItemsQuery
                 {
                     GroupItems = groupItems,
-                    IncludeItemTypes = RequestHelpers.Split(includeItemTypes, ',', true),
+                    IncludeItemTypes = includeItemTypes,
                     IsPlayed = isPlayed,
                     Limit = limit,
                     ParentId = parentId ?? Guid.Empty,
diff --git a/Jellyfin.Api/Controllers/UserViewsController.cs b/Jellyfin.Api/Controllers/UserViewsController.cs
index d575bfc3b..60fd1df01 100644
--- a/Jellyfin.Api/Controllers/UserViewsController.cs
+++ b/Jellyfin.Api/Controllers/UserViewsController.cs
@@ -5,6 +5,7 @@ using System.Globalization;
 using System.Linq;
 using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
+using Jellyfin.Api.ModelBinders;
 using Jellyfin.Api.Models.UserViewDtos;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
@@ -67,7 +68,7 @@ namespace Jellyfin.Api.Controllers
         public ActionResult<QueryResult<BaseItemDto>> GetUserViews(
             [FromRoute, Required] Guid userId,
             [FromQuery] bool? includeExternalContent,
-            [FromQuery] string? presetViews,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] presetViews,
             [FromQuery] bool includeHidden = false)
         {
             var query = new UserViewQuery
@@ -81,9 +82,9 @@ namespace Jellyfin.Api.Controllers
                 query.IncludeExternalContent = includeExternalContent.Value;
             }
 
-            if (!string.IsNullOrWhiteSpace(presetViews))
+            if (presetViews.Length != 0)
             {
-                query.PresetViews = RequestHelpers.Split(presetViews, ',', true);
+                query.PresetViews = presetViews;
             }
 
             var app = _authContext.GetAuthorizationInfo(Request).Client ?? string.Empty;
diff --git a/Jellyfin.Api/Controllers/VideosController.cs b/Jellyfin.Api/Controllers/VideosController.cs
index 07b114bb7..7e326f410 100644
--- a/Jellyfin.Api/Controllers/VideosController.cs
+++ b/Jellyfin.Api/Controllers/VideosController.cs
@@ -10,6 +10,7 @@ using Jellyfin.Api.Attributes;
 using Jellyfin.Api.Constants;
 using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
+using Jellyfin.Api.ModelBinders;
 using Jellyfin.Api.Models.StreamingDtos;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Net;
@@ -203,9 +204,9 @@ namespace Jellyfin.Api.Controllers
         [Authorize(Policy = Policies.RequiresElevation)]
         [ProducesResponseType(StatusCodes.Status204NoContent)]
         [ProducesResponseType(StatusCodes.Status400BadRequest)]
-        public async Task<ActionResult> MergeVersions([FromQuery, Required] string itemIds)
+        public async Task<ActionResult> MergeVersions([FromQuery, Required, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] itemIds)
         {
-            var items = RequestHelpers.Split(itemIds, ',', true)
+            var items = itemIds
                 .Select(i => _libraryManager.GetItemById(i))
                 .OfType<Video>()
                 .OrderBy(i => i.Id)
diff --git a/Jellyfin.Api/Controllers/YearsController.cs b/Jellyfin.Api/Controllers/YearsController.cs
index 1b38e399d..9c3ecb4ce 100644
--- a/Jellyfin.Api/Controllers/YearsController.cs
+++ b/Jellyfin.Api/Controllers/YearsController.cs
@@ -73,9 +73,9 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] string? sortOrder,
             [FromQuery] string? parentId,
             [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
-            [FromQuery] string? excludeItemTypes,
-            [FromQuery] string? includeItemTypes,
-            [FromQuery] string? mediaTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] excludeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] includeItemTypes,
+            [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] string[] mediaTypes,
             [FromQuery] string? sortBy,
             [FromQuery] bool? enableUserData,
             [FromQuery] int? imageTypeLimit,
@@ -103,19 +103,15 @@ namespace Jellyfin.Api.Controllers
 
             IList<BaseItem> items;
 
-            var excludeItemTypesArr = RequestHelpers.Split(excludeItemTypes, ',', true);
-            var includeItemTypesArr = RequestHelpers.Split(includeItemTypes, ',', true);
-            var mediaTypesArr = RequestHelpers.Split(mediaTypes, ',', true);
-
             var query = new InternalItemsQuery(user)
             {
-                ExcludeItemTypes = excludeItemTypesArr,
-                IncludeItemTypes = includeItemTypesArr,
-                MediaTypes = mediaTypesArr,
+                ExcludeItemTypes = excludeItemTypes,
+                IncludeItemTypes = includeItemTypes,
+                MediaTypes = mediaTypes,
                 DtoOptions = dtoOptions
             };
 
-            bool Filter(BaseItem i) => FilterItem(i, excludeItemTypesArr, includeItemTypesArr, mediaTypesArr);
+            bool Filter(BaseItem i) => FilterItem(i, excludeItemTypes, includeItemTypes, mediaTypes);
 
             if (parentItem.IsFolder)
             {