Merge branch 'master' into Plugins

1 files changed, 395 insertions, 187 deletions

diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index d3fb6a46d..2c30ca458 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -1,8 +1,11 @@
+#pragma warning disable CS1591
+
 using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Text;
 using System.Threading;
 using Jellyfin.Data.Enums;
@@ -371,7 +374,7 @@ namespace MediaBrowser.Controller.MediaEncoding
         public int GetVideoProfileScore(string profile)
         {
             // strip spaces because they may be stripped out on the query string
-            profile = profile.Replace(" ", "");
+            profile = profile.Replace(" ", string.Empty, StringComparison.Ordinal);
             return Array.FindIndex(_videoProfiles, x => string.Equals(x, profile, StringComparison.OrdinalIgnoreCase));
         }
 
@@ -449,41 +452,61 @@ namespace MediaBrowser.Controller.MediaEncoding
             var arg = new StringBuilder();
             var videoDecoder = GetHardwareAcceleratedVideoDecoder(state, encodingOptions) ?? string.Empty;
             var outputVideoCodec = GetVideoEncoder(state, encodingOptions) ?? string.Empty;
-            bool isVaapiDecoder = videoDecoder.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1;
-            bool isVaapiEncoder = outputVideoCodec.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1;
-            bool isQsvDecoder = videoDecoder.IndexOf("qsv", StringComparison.OrdinalIgnoreCase) != -1;
-            bool isQsvEncoder = outputVideoCodec.IndexOf("qsv", StringComparison.OrdinalIgnoreCase) != -1;
-
-            if (state.IsVideoRequest
-                && string.Equals(encodingOptions.HardwareAccelerationType, "vaapi", StringComparison.OrdinalIgnoreCase))
-            {
-                if (isVaapiDecoder)
-                {
-                    arg.Append("-hwaccel_output_format vaapi ")
-                        .Append("-vaapi_device ")
-                        .Append(encodingOptions.VaapiDevice)
-                        .Append(" ");
-                }
-                else if (!isVaapiDecoder && isVaapiEncoder)
-                {
-                    arg.Append("-vaapi_device ")
-                        .Append(encodingOptions.VaapiDevice)
-                        .Append(" ");
+            var isVaapiDecoder = videoDecoder.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1;
+            var isVaapiEncoder = outputVideoCodec.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1;
+            var isQsvDecoder = videoDecoder.IndexOf("qsv", StringComparison.OrdinalIgnoreCase) != -1;
+            var isQsvEncoder = outputVideoCodec.IndexOf("qsv", StringComparison.OrdinalIgnoreCase) != -1;
+            var isNvencHevcDecoder = videoDecoder.IndexOf("hevc_cuvid", StringComparison.OrdinalIgnoreCase) != -1;
+            var isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+            var isLinux = RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
+            var isMacOS = RuntimeInformation.IsOSPlatform(OSPlatform.OSX);
+
+            if (!IsCopyCodec(outputVideoCodec))
+            {
+                if (state.IsVideoRequest
+                    && _mediaEncoder.SupportsHwaccel("vaapi")
+                    && string.Equals(encodingOptions.HardwareAccelerationType, "vaapi", StringComparison.OrdinalIgnoreCase))
+                {
+                    if (isVaapiDecoder)
+                    {
+                        arg.Append("-hwaccel_output_format vaapi ")
+                            .Append("-vaapi_device ")
+                            .Append(encodingOptions.VaapiDevice)
+                            .Append(' ');
+                    }
+                    else if (!isVaapiDecoder && isVaapiEncoder)
+                    {
+                        arg.Append("-vaapi_device ")
+                            .Append(encodingOptions.VaapiDevice)
+                            .Append(' ');
+                    }
                 }
-            }
 
-            if (state.IsVideoRequest
-                && string.Equals(encodingOptions.HardwareAccelerationType, "qsv", StringComparison.OrdinalIgnoreCase))
-            {
-                var hasTextSubs = state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
-
-                if (!hasTextSubs)
+                if (state.IsVideoRequest
+                    && string.Equals(encodingOptions.HardwareAccelerationType, "qsv", StringComparison.OrdinalIgnoreCase))
                 {
-                     if (isQsvEncoder)
+                    var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+
+                    if (isQsvEncoder)
                     {
                         if (isQsvDecoder)
                         {
-                            arg.Append("-hwaccel qsv ");
+                            if (isLinux)
+                            {
+                                if (hasGraphicalSubs)
+                                {
+                                    arg.Append("-init_hw_device qsv=hw -filter_hw_device hw ");
+                                }
+                                else
+                                {
+                                    arg.Append("-hwaccel qsv ");
+                                }
+                            }
+
+                            if (isWindows)
+                            {
+                                arg.Append("-hwaccel qsv ");
+                            }
                         }
                         // While using SW decoder
                         else
@@ -492,6 +515,30 @@ namespace MediaBrowser.Controller.MediaEncoding
                         }
                     }
                 }
+
+                if (state.IsVideoRequest
+                    && string.Equals(encodingOptions.HardwareAccelerationType, "nvenc", StringComparison.OrdinalIgnoreCase))
+                {
+                    var isColorDepth10 = IsColorDepth10(state);
+
+                    if (isNvencHevcDecoder && isColorDepth10
+                        && _mediaEncoder.SupportsHwaccel("opencl")
+                        && encodingOptions.EnableTonemapping
+                        && !string.IsNullOrEmpty(state.VideoStream.VideoRange)
+                        && state.VideoStream.VideoRange.Contains("HDR", StringComparison.OrdinalIgnoreCase))
+                    {
+                        arg.Append("-init_hw_device opencl=ocl:")
+                            .Append(encodingOptions.OpenclDevice)
+                            .Append(' ')
+                            .Append("-filter_hw_device ocl ");
+                    }
+                }
+
+                if (state.IsVideoRequest
+                    && string.Equals(encodingOptions.HardwareAccelerationType, "videotoolbox", StringComparison.OrdinalIgnoreCase))
+                {
+                    arg.Append("-hwaccel videotoolbox ");
+                }
             }
 
             arg.Append("-i ")
@@ -649,7 +696,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             //     }
             // }
 
-            // fallbackFontParam = string.Format(":force_style='FontName=Droid Sans Fallback':fontsdir='{0}'", _mediaEncoder.EscapeSubtitleFilterPath(_fileSystem.GetDirectoryName(fallbackFontPath)));
+            // fallbackFontParam = string.Format(CultureInfo.InvariantCulture, ":force_style='FontName=Droid Sans Fallback':fontsdir='{0}'", _mediaEncoder.EscapeSubtitleFilterPath(_fileSystem.GetDirectoryName(fallbackFontPath)));
 
             if (state.SubtitleStream.IsExternal)
             {
@@ -806,6 +853,34 @@ namespace MediaBrowser.Controller.MediaEncoding
                         break;
                 }
             }
+            else if (string.Equals(videoEncoder, "h264_amf", StringComparison.OrdinalIgnoreCase)
+                || string.Equals(videoEncoder, "hevc_amf", StringComparison.OrdinalIgnoreCase))
+            {
+                switch (encodingOptions.EncoderPreset)
+                {
+                    case "veryslow":
+                    case "slow":
+                    case "slower":
+                        param += "-quality quality";
+                        break;
+
+                    case "medium":
+                        param += "-quality balanced";
+                        break;
+
+                    case "fast":
+                    case "faster":
+                    case "veryfast":
+                    case "superfast":
+                    case "ultrafast":
+                        param += "-quality speed";
+                        break;
+
+                    default:
+                        param += "-quality speed";
+                        break;
+                }
+            }
             else if (string.Equals(videoEncoder, "libvpx", StringComparison.OrdinalIgnoreCase)) // webm
             {
                 // Values 0-3, 0 being highest quality but slower
@@ -826,7 +901,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 profileScore = Math.Min(profileScore, 2);
 
                 // http://www.webmproject.org/docs/encoder-parameters/
-                param += string.Format("-speed 16 -quality good -profile:v {0} -slices 8 -crf {1} -qmin {2} -qmax {3}",
+                param += string.Format(CultureInfo.InvariantCulture, "-speed 16 -quality good -profile:v {0} -slices 8 -crf {1} -qmin {2} -qmax {3}",
                     profileScore.ToString(_usCulture),
                     crf,
                     qmin,
@@ -850,7 +925,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             var framerate = GetFramerateParam(state);
             if (framerate.HasValue)
             {
-                param += string.Format(" -r {0}", framerate.Value.ToString(_usCulture));
+                param += string.Format(CultureInfo.InvariantCulture, " -r {0}", framerate.Value.ToString(_usCulture));
             }
 
             var targetVideoCodec = state.ActualOutputVideoCodec;
@@ -947,11 +1022,33 @@ namespace MediaBrowser.Controller.MediaEncoding
             if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase)
                 && !string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase)
                 && !string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase)
+                && !string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase)
                 && !string.Equals(videoEncoder, "h264_v4l2m2m", StringComparison.OrdinalIgnoreCase))
             {
                 param = "-pix_fmt yuv420p " + param;
             }
 
+            if (string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase))
+            {
+                var videoDecoder = GetHardwareAcceleratedVideoDecoder(state, encodingOptions) ?? string.Empty;
+                var videoStream = state.VideoStream;
+                var isColorDepth10 = IsColorDepth10(state);
+
+                if (videoDecoder.IndexOf("hevc_cuvid", StringComparison.OrdinalIgnoreCase) != -1
+                    && isColorDepth10
+                    && _mediaEncoder.SupportsHwaccel("opencl")
+                    && encodingOptions.EnableTonemapping
+                    && !string.IsNullOrEmpty(videoStream.VideoRange)
+                    && videoStream.VideoRange.Contains("HDR", StringComparison.OrdinalIgnoreCase))
+                {
+                    param = "-pix_fmt nv12 " + param;
+                }
+                else
+                {
+                    param = "-pix_fmt yuv420p " + param;
+                }
+            }
+
             if (string.Equals(videoEncoder, "h264_v4l2m2m", StringComparison.OrdinalIgnoreCase))
             {
                 param = "-pix_fmt nv21 " + param;
@@ -1276,6 +1373,17 @@ namespace MediaBrowser.Controller.MediaEncoding
             return null;
         }
 
+        public int? GetAudioBitrateParam(int? audioBitRate, MediaStream audioStream)
+        {
+            if (audioBitRate.HasValue)
+            {
+                // Don't encode any higher than this
+                return Math.Min(384000, audioBitRate.Value);
+            }
+
+            return null;
+        }
+
         public string GetAudioFilterParam(EncodingJobInfo state, EncodingOptions encodingOptions, bool isHls)
         {
             var channels = state.OutputAudioChannels;
@@ -1351,7 +1459,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 transcoderChannelLimit = 6;
             }
 
-            var isTranscodingAudio = !EncodingHelper.IsCopyCodec(codec);
+            var isTranscodingAudio = !IsCopyCodec(codec);
 
             int? resultChannels = state.GetRequestedAudioChannels(codec);
             if (isTranscodingAudio)
@@ -1419,7 +1527,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             if (time > 0)
             {
-                return string.Format("-ss {0}", _mediaEncoder.GetTimeParameter(time));
+                return string.Format(CultureInfo.InvariantCulture, "-ss {0}", _mediaEncoder.GetTimeParameter(time));
             }
 
             return string.Empty;
@@ -1541,87 +1649,77 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             outputVideoCodec ??= string.Empty;
 
-            var outputSizeParam = string.Empty;
+            var outputSizeParam = ReadOnlySpan<char>.Empty;
             var request = state.BaseRequest;
 
-            // Add resolution params, if specified
-            if (request.Width.HasValue
-                || request.Height.HasValue
-                || request.MaxHeight.HasValue
-                || request.MaxWidth.HasValue)
+            outputSizeParam = GetOutputSizeParam(state, options, outputVideoCodec).TrimEnd('"');
+
+            // All possible beginning of video filters
+            // Don't break the order
+            string[] beginOfOutputSizeParam = new[]
             {
-                outputSizeParam = GetOutputSizeParam(state, options, outputVideoCodec).TrimEnd('"');
+                // for tonemap_opencl
+                "hwupload,tonemap_opencl",
+
+                // hwupload=extra_hw_frames=64,vpp_qsv (for overlay_qsv on linux)
+                "hwupload=extra_hw_frames",
+
+                // vpp_qsv
+                "vpp",
+
+                // hwdownload,format=p010le (hardware decode + software encode for vaapi)
+                "hwdownload",
 
-                var index = outputSizeParam.IndexOf("hwdownload", StringComparison.OrdinalIgnoreCase);
+                // format=nv12|vaapi,hwupload,scale_vaapi
+                "format",
+
+                // bwdif,scale=expr
+                "bwdif",
+
+                // yadif,scale=expr
+                "yadif",
+
+                // scale=expr
+                "scale"
+            };
+
+            var index = -1;
+            foreach (var param in beginOfOutputSizeParam)
+            {
+                index = outputSizeParam.IndexOf(param, StringComparison.OrdinalIgnoreCase);
                 if (index != -1)
                 {
-                    outputSizeParam = "," + outputSizeParam.Substring(index);
-                }
-                else
-                {
-                    index = outputSizeParam.IndexOf("format", StringComparison.OrdinalIgnoreCase);
-                    if (index != -1)
-                    {
-                        outputSizeParam = "," + outputSizeParam.Substring(index);
-                    }
-                    else
-                    {
-                        index = outputSizeParam.IndexOf("yadif", StringComparison.OrdinalIgnoreCase);
-                        if (index != -1)
-                        {
-                            outputSizeParam = "," + outputSizeParam.Substring(index);
-                        }
-                        else
-                        {
-                            index = outputSizeParam.IndexOf("scale", StringComparison.OrdinalIgnoreCase);
-                            if (index != -1)
-                            {
-                                outputSizeParam = "," + outputSizeParam.Substring(index);
-                            }
-                        }
-                    }
+                    outputSizeParam = outputSizeParam.Slice(index);
+                    break;
                 }
             }
 
             var videoSizeParam = string.Empty;
             var videoDecoder = GetHardwareAcceleratedVideoDecoder(state, options) ?? string.Empty;
+            var isLinux = RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
 
             // Setup subtitle scaling
             if (state.VideoStream != null && state.VideoStream.Width.HasValue && state.VideoStream.Height.HasValue)
             {
-                videoSizeParam = string.Format(
-                    CultureInfo.InvariantCulture,
-                    "scale={0}:{1}",
-                    state.VideoStream.Width.Value,
-                    state.VideoStream.Height.Value);
+                // Adjust the size of graphical subtitles to fit the video stream.
+                var videoStream = state.VideoStream;
+                var inputWidth = videoStream?.Width;
+                var inputHeight = videoStream?.Height;
+                var (width, height) = GetFixedOutputSize(inputWidth, inputHeight, request.Width, request.Height, request.MaxWidth, request.MaxHeight);
 
-                // For QSV, feed it into hardware encoder now
-                if (string.Equals(outputVideoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase))
+                if (width.HasValue && height.HasValue)
                 {
-                    videoSizeParam += ",hwupload=extra_hw_frames=64";
-                }
-
-                // For VAAPI and CUVID decoder
-                // these encoders cannot automatically adjust the size of graphical subtitles to fit the output video,
-                // thus needs to be manually adjusted.
-                if (videoDecoder.IndexOf("cuvid", StringComparison.OrdinalIgnoreCase) != -1
-                    || (IsVaapiSupported(state) && string.Equals(options.HardwareAccelerationType, "vaapi", StringComparison.OrdinalIgnoreCase)
-                        && (videoDecoder.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1
-                            || outputVideoCodec.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1)))
-                {
-                    var videoStream = state.VideoStream;
-                    var inputWidth = videoStream?.Width;
-                    var inputHeight = videoStream?.Height;
-                    var (width, height) = GetFixedOutputSize(inputWidth, inputHeight, request.Width, request.Height, request.MaxWidth, request.MaxHeight);
-
-                    if (width.HasValue && height.HasValue)
-                    {
-                        videoSizeParam = string.Format(
+                    videoSizeParam = string.Format(
                         CultureInfo.InvariantCulture,
-                        "scale={0}:{1}",
+                        "scale={0}x{1}",
                         width.Value,
                         height.Value);
-                    }
+                }
+
+                // For QSV, feed it into hardware encoder now
+                if (isLinux && string.Equals(outputVideoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase))
+                {
+                    videoSizeParam += ",hwupload=extra_hw_frames=64";
                 }
             }
 
@@ -1634,7 +1732,10 @@ namespace MediaBrowser.Controller.MediaEncoding
                 : state.SubtitleStream.Index;
 
             // Setup default filtergraph utilizing FFMpeg overlay() and FFMpeg scale() (see the return of this function for index reference)
-            var retStr = " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay{3}\"";
+            // Always put the scaler before the overlay for better performance
+            var retStr = !outputSizeParam.IsEmpty
+                ? " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}]{3}[base];[base][sub]overlay\""
+                : " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay\"";
 
             // When the input may or may not be hardware VAAPI decodable
             if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
@@ -1644,12 +1745,11 @@ namespace MediaBrowser.Controller.MediaEncoding
                     [sub]: SW scaling subtitle to FixedOutputSize
                     [base][sub]: SW overlay
                 */
-                outputSizeParam = outputSizeParam.TrimStart(',');
                 retStr = " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}]{3},hwdownload[base];[base][sub]overlay,format=nv12,hwupload\"";
             }
 
             // If we're hardware VAAPI decoding and software encoding, download frames from the decoder first
-            else if (IsVaapiSupported(state) && videoDecoder.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1
+            else if (_mediaEncoder.SupportsHwaccel("vaapi") && videoDecoder.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1
                 && string.Equals(outputVideoCodec, "libx264", StringComparison.OrdinalIgnoreCase))
             {
                 /*
@@ -1657,7 +1757,6 @@ namespace MediaBrowser.Controller.MediaEncoding
                     [sub]: SW scaling subtitle to FixedOutputSize
                     [base][sub]: SW overlay
                 */
-                outputSizeParam = outputSizeParam.TrimStart(',');
                 retStr = " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}]{3}[base];[base][sub]overlay\"";
             }
             else if (string.Equals(outputVideoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase))
@@ -1666,14 +1765,13 @@ namespace MediaBrowser.Controller.MediaEncoding
                     QSV in FFMpeg can now setup hardware overlay for transcodes.
                     For software decoding and hardware encoding option, frames must be hwuploaded into hardware
                     with fixed frame size.
+                    Currently only supports linux.
                 */
-                if (videoDecoder.IndexOf("qsv", StringComparison.OrdinalIgnoreCase) != -1)
+                if (isLinux)
                 {
-                    retStr = " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay_qsv=x=(W-w)/2:y=(H-h)/2{3}\"";
-                }
-                else
-                {
-                    retStr = " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}]hwupload=extra_hw_frames=64[v];[v][sub]overlay_qsv=x=(W-w)/2:y=(H-h)/2{3}\"";
+                    retStr = !outputSizeParam.IsEmpty
+                        ? " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}]{3}[base];[base][sub]overlay_qsv\""
+                        : " -filter_complex \"[{0}:{1}]{4}[sub];[0:{2}][sub]overlay_qsv\"";
                 }
             }
 
@@ -1683,7 +1781,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 mapPrefix,
                 subtitleStreamIndex,
                 state.VideoStream.Index,
-                outputSizeParam,
+                outputSizeParam.ToString(),
                 videoSizeParam);
         }
 
@@ -1745,10 +1843,8 @@ namespace MediaBrowser.Controller.MediaEncoding
                 requestedMaxWidth,
                 requestedMaxHeight);
 
-            var hasTextSubs = state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
-
             if ((string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase)
-                || (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) && !hasTextSubs))
+                || string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase))
                 && width.HasValue
                 && height.HasValue)
             {
@@ -1757,7 +1853,11 @@ namespace MediaBrowser.Controller.MediaEncoding
                 // output dimensions. Output dimensions are guaranteed to be even.
                 var outputWidth = width.Value;
                 var outputHeight = height.Value;
-                var vaapi_or_qsv = string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) ? "qsv" : "vaapi";
+                var qsv_or_vaapi = string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase);
+                var isDeintEnabled = state.DeInterlace("h264", true)
+                    || state.DeInterlace("avc", true)
+                    || state.DeInterlace("h265", true)
+                    || state.DeInterlace("hevc", true);
 
                 if (!videoWidth.HasValue
                     || outputWidth != videoWidth.Value
@@ -1765,17 +1865,24 @@ namespace MediaBrowser.Controller.MediaEncoding
                     || outputHeight != videoHeight.Value)
                 {
                     // Force nv12 pixel format to enable 10-bit to 8-bit colour conversion.
+                    // use vpp_qsv filter to avoid green bar when the fixed output size is requested.
                     filters.Add(
                         string.Format(
                             CultureInfo.InvariantCulture,
-                            "scale_{0}=w={1}:h={2}:format=nv12",
-                            vaapi_or_qsv,
+                            "{0}=w={1}:h={2}:format=nv12{3}",
+                            qsv_or_vaapi ? "vpp_qsv" : "scale_vaapi",
                             outputWidth,
-                            outputHeight));
+                            outputHeight,
+                            (qsv_or_vaapi && isDeintEnabled) ? ":deinterlace=1" : string.Empty));
                 }
                 else
                 {
-                    filters.Add(string.Format(CultureInfo.InvariantCulture, "scale_{0}=format=nv12", vaapi_or_qsv));
+                    filters.Add(
+                        string.Format(
+                            CultureInfo.InvariantCulture,
+                            "{0}=format=nv12{1}",
+                            qsv_or_vaapi ? "vpp_qsv" : "scale_vaapi",
+                            (qsv_or_vaapi && isDeintEnabled) ? ":deinterlace=1" : string.Empty));
                 }
             }
             else if ((videoDecoder ?? string.Empty).IndexOf("cuvid", StringComparison.OrdinalIgnoreCase) != -1
@@ -1987,7 +2094,6 @@ namespace MediaBrowser.Controller.MediaEncoding
             // http://sonnati.wordpress.com/2012/10/19/ffmpeg-the-swiss-army-knife-of-internet-streaming-part-vi/
 
             var request = state.BaseRequest;
-
             var videoStream = state.VideoStream;
             var filters = new List<string>();
 
@@ -1996,32 +2102,82 @@ namespace MediaBrowser.Controller.MediaEncoding
             var inputHeight = videoStream?.Height;
             var threeDFormat = state.MediaSource.Video3DFormat;
 
+            var isVaapiDecoder = videoDecoder.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1;
+            var isVaapiH264Encoder = outputVideoCodec.IndexOf("h264_vaapi", StringComparison.OrdinalIgnoreCase) != -1;
+            var isQsvH264Encoder = outputVideoCodec.IndexOf("h264_qsv", StringComparison.OrdinalIgnoreCase) != -1;
+            var isNvdecH264Decoder = videoDecoder.IndexOf("h264_cuvid", StringComparison.OrdinalIgnoreCase) != -1;
+            var isNvdecHevcDecoder = videoDecoder.IndexOf("hevc_cuvid", StringComparison.OrdinalIgnoreCase) != -1;
+            var isLibX264Encoder = outputVideoCodec.IndexOf("libx264", StringComparison.OrdinalIgnoreCase) != -1;
+            var isLinux = RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
+            var isColorDepth10 = IsColorDepth10(state);
+
             var hasTextSubs = state.SubtitleStream != null && state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+            var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
+
+            // If double rate deinterlacing is enabled and the input framerate is 30fps or below, otherwise the output framerate will be too high for many devices
+            var doubleRateDeinterlace = options.DeinterlaceDoubleRate && (videoStream?.RealFrameRate ?? 60) <= 30;
+
+            // Currently only with the use of NVENC decoder can we get a decent performance.
+            // Currently only the HEVC/H265 format is supported.
+            // NVIDIA Pascal and Turing or higher are recommended.
+            if (isNvdecHevcDecoder && isColorDepth10
+                && _mediaEncoder.SupportsHwaccel("opencl")
+                && options.EnableTonemapping
+                && !string.IsNullOrEmpty(videoStream.VideoRange)
+                && videoStream.VideoRange.Contains("HDR", StringComparison.OrdinalIgnoreCase))
+            {
+                var parameters = "tonemap_opencl=format=nv12:primaries=bt709:transfer=bt709:matrix=bt709:tonemap={0}:desat={1}:threshold={2}:peak={3}";
+
+                if (options.TonemappingParam != 0)
+                {
+                    parameters += ":param={4}";
+                }
+
+                if (!string.Equals(options.TonemappingRange, "auto", StringComparison.OrdinalIgnoreCase))
+                {
+                    parameters += ":range={5}";
+                }
+
+                // Upload the HDR10 or HLG data to the OpenCL device,
+                // use tonemap_opencl filter for tone mapping,
+                // and then download the SDR data to memory.
+                filters.Add("hwupload");
+                filters.Add(
+                    string.Format(
+                        CultureInfo.InvariantCulture,
+                        parameters,
+                        options.TonemappingAlgorithm,
+                        options.TonemappingDesat,
+                        options.TonemappingThreshold,
+                        options.TonemappingPeak,
+                        options.TonemappingParam,
+                        options.TonemappingRange));
+                filters.Add("hwdownload");
+
+                if (hasGraphicalSubs || state.DeInterlace("h265", true) || state.DeInterlace("hevc", true)
+                    || string.Equals(outputVideoCodec, "libx264", StringComparison.OrdinalIgnoreCase))
+                {
+                    filters.Add("format=nv12");
+                }
+            }
 
             // When the input may or may not be hardware VAAPI decodable
-            if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
+            if (isVaapiH264Encoder)
             {
                 filters.Add("format=nv12|vaapi");
                 filters.Add("hwupload");
             }
 
-            // When the input may or may not be hardware QSV decodable
-            else if (string.Equals(outputVideoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase))
+            // When burning in graphical subtitles using overlay_qsv, upload videostream to the same qsv context
+            else if (isLinux && hasGraphicalSubs && isQsvH264Encoder)
             {
-                if (!hasTextSubs)
-                {
-                    filters.Add("format=nv12|qsv");
-                    filters.Add("hwupload=extra_hw_frames=64");
-                }
+                filters.Add("hwupload=extra_hw_frames=64");
             }
 
             // If we're hardware VAAPI decoding and software encoding, download frames from the decoder first
-            else if (videoDecoder.IndexOf("vaapi", StringComparison.OrdinalIgnoreCase) != -1
-                && string.Equals(outputVideoCodec, "libx264", StringComparison.OrdinalIgnoreCase))
+            else if (IsVaapiSupported(state) && isVaapiDecoder && isLibX264Encoder)
             {
                 var codec = videoStream.Codec.ToLowerInvariant();
-                var isColorDepth10 = !string.IsNullOrEmpty(videoStream.Profile) && (videoStream.Profile.Contains("Main 10", StringComparison.OrdinalIgnoreCase)
-                    || videoStream.Profile.Contains("High 10", StringComparison.OrdinalIgnoreCase));
 
                 // Assert 10-bit hardware VAAPI decodable
                 if (isColorDepth10 && (string.Equals(codec, "hevc", StringComparison.OrdinalIgnoreCase)
@@ -2046,49 +2202,52 @@ namespace MediaBrowser.Controller.MediaEncoding
             }
 
             // Add hardware deinterlace filter before scaling filter
-            if (state.DeInterlace("h264", true))
+            if (state.DeInterlace("h264", true) || state.DeInterlace("avc", true))
             {
-                if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
+                if (isVaapiH264Encoder)
                 {
-                    filters.Add(string.Format(CultureInfo.InvariantCulture, "deinterlace_vaapi"));
-                }
-                else if (string.Equals(outputVideoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase))
-                {
-                    if (!hasTextSubs)
-                    {
-                        filters.Add(string.Format(CultureInfo.InvariantCulture, "deinterlace_qsv"));
-                    }
+                    filters.Add(
+                        string.Format(
+                            CultureInfo.InvariantCulture,
+                            "deinterlace_vaapi=rate={0}",
+                            doubleRateDeinterlace ? "field" : "frame"));
                 }
             }
 
             // Add software deinterlace filter before scaling filter
-            if (((state.DeInterlace("h264", true) || state.DeInterlace("h265", true) || state.DeInterlace("hevc", true))
-                && !string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase)
-                && !string.Equals(outputVideoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase))
-                    || (hasTextSubs && state.DeInterlace("h264", true) && string.Equals(outputVideoCodec, "h264_qsv", StringComparison.OrdinalIgnoreCase)))
+            if ((state.DeInterlace("h264", true)
+                 || state.DeInterlace("avc", true)
+                 || state.DeInterlace("h265", true)
+                 || state.DeInterlace("hevc", true))
+                && !isVaapiH264Encoder
+                && !isQsvH264Encoder
+                && !isNvdecH264Decoder)
             {
-                var inputFramerate = videoStream?.RealFrameRate;
-
-                // If it is already 60fps then it will create an output framerate that is much too high for roku and others to handle
-                if (string.Equals(options.DeinterlaceMethod, "yadif_bob", StringComparison.OrdinalIgnoreCase) && (inputFramerate ?? 60) <= 30)
+                if (string.Equals(options.DeinterlaceMethod, "bwdif", StringComparison.OrdinalIgnoreCase))
                 {
-                    filters.Add("yadif=1:-1:0");
+                    filters.Add(
+                        string.Format(
+                            CultureInfo.InvariantCulture,
+                            "bwdif={0}:-1:0",
+                            doubleRateDeinterlace ? "1" : "0"));
                 }
                 else
                 {
-                    filters.Add("yadif=0:-1:0");
+                    filters.Add(
+                        string.Format(
+                            CultureInfo.InvariantCulture,
+                            "yadif={0}:-1:0",
+                            doubleRateDeinterlace ? "1" : "0"));
                 }
             }
 
             // Add scaling filter: scale_*=format=nv12 or scale_*=w=*:h=*:format=nv12 or scale=expr
             filters.AddRange(GetScalingFilters(state, inputWidth, inputHeight, threeDFormat, videoDecoder, outputVideoCodec, request.Width, request.Height, request.MaxWidth, request.MaxHeight));
 
-            // Add parameters to use VAAPI with burn-in text subttiles (GH issue #642)
-            if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
+            // Add parameters to use VAAPI with burn-in text subtitles (GH issue #642)
+            if (isVaapiH264Encoder)
             {
-                if (state.SubtitleStream != null
-                    && state.SubtitleStream.IsTextSubtitleStream
-                    && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
+                if (hasTextSubs)
                 {
                     // Test passed on Intel and AMD gfx
                     filters.Add("hwmap=mode=read+write");
@@ -2098,9 +2257,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             var output = string.Empty;
 
-            if (state.SubtitleStream != null
-                && state.SubtitleStream.IsTextSubtitleStream
-                && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
+            if (hasTextSubs)
             {
                 var subParam = GetTextSubtitleParam(state);
 
@@ -2108,7 +2265,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
                 // Ensure proper filters are passed to ffmpeg in case of hardware acceleration via VA-API
                 // Reference: https://trac.ffmpeg.org/wiki/Hardware/VAAPI
-                if (string.Equals(outputVideoCodec, "h264_vaapi", StringComparison.OrdinalIgnoreCase))
+                if (isVaapiH264Encoder)
                 {
                     filters.Add("hwmap");
                 }
@@ -2125,7 +2282,6 @@ namespace MediaBrowser.Controller.MediaEncoding
             return output;
         }
 
-
         /// <summary>
         /// Gets the number of threads.
         /// </summary>
@@ -2262,7 +2418,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 flags.Add("+ignidx");
             }
 
-            if (state.GenPtsInput || EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
+            if (state.GenPtsInput || IsCopyCodec(state.OutputVideoCodec))
             {
                 flags.Add("+genpts");
             }
@@ -2288,7 +2444,8 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 inputModifier += " " + videoDecoder;
 
-                if ((videoDecoder ?? string.Empty).IndexOf("cuvid", StringComparison.OrdinalIgnoreCase) != -1)
+                if (!IsCopyCodec(state.OutputVideoCodec)
+                    && (videoDecoder ?? string.Empty).IndexOf("cuvid", StringComparison.OrdinalIgnoreCase) != -1)
                 {
                     var videoStream = state.VideoStream;
                     var inputWidth = videoStream?.Width;
@@ -2301,11 +2458,24 @@ namespace MediaBrowser.Controller.MediaEncoding
                         && width.HasValue
                         && height.HasValue)
                     {
-                        inputModifier += string.Format(
-                            CultureInfo.InvariantCulture,
-                            " -resize {0}x{1}",
-                            width.Value,
-                            height.Value);
+                        if (width.HasValue && height.HasValue)
+                        {
+                            inputModifier += string.Format(
+                                CultureInfo.InvariantCulture,
+                                " -resize {0}x{1}",
+                                width.Value,
+                                height.Value);
+                        }
+
+                        if (state.DeInterlace("h264", true))
+                        {
+                            inputModifier += " -deint 1";
+
+                            if (!encodingOptions.DeinterlaceDoubleRate || (videoStream?.RealFrameRate ?? 60) > 30)
+                            {
+                                inputModifier += " -drop_second_field 1";
+                            }
+                        }
                     }
                 }
             }
@@ -2521,21 +2691,21 @@ namespace MediaBrowser.Controller.MediaEncoding
         }
 
         /// <summary>
-        /// Gets the name of the output video codec.
+        /// Gets the ffmpeg option string for the hardware accelerated video decoder.
         /// </summary>
+        /// <param name="state">The encoding job info.</param>
+        /// <param name="encodingOptions">The encoding options.</param>
+        /// <returns>The option string or null if none available.</returns>
         protected string GetHardwareAcceleratedVideoDecoder(EncodingJobInfo state, EncodingOptions encodingOptions)
         {
-            var videoType = state.MediaSource.VideoType ?? VideoType.VideoFile;
             var videoStream = state.VideoStream;
-            var isColorDepth10 = !string.IsNullOrEmpty(videoStream.Profile) && (videoStream.Profile.Contains("Main 10", StringComparison.OrdinalIgnoreCase)
-                || videoStream.Profile.Contains("High 10", StringComparison.OrdinalIgnoreCase));
 
-
-            if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
+            if (videoStream == null)
             {
                 return null;
             }
 
+            var videoType = state.MediaSource.VideoType ?? VideoType.VideoFile;
             // Only use alternative encoders for video files.
             // When using concat with folder rips, if the mfx session fails to initialize, ffmpeg will be stuck retrying and will not exit gracefully
             // Since transcoding of folder rips is expiremental anyway, it's not worth adding additional variables such as this.
@@ -2544,10 +2714,15 @@ namespace MediaBrowser.Controller.MediaEncoding
                 return null;
             }
 
-            if (videoStream != null
-                && !string.IsNullOrEmpty(videoStream.Codec)
-                && !string.IsNullOrEmpty(encodingOptions.HardwareAccelerationType))
+            if (IsCopyCodec(state.OutputVideoCodec))
             {
+                return null;
+            }
+
+            if (!string.IsNullOrEmpty(videoStream.Codec) && !string.IsNullOrEmpty(encodingOptions.HardwareAccelerationType))
+            {
+                var isColorDepth10 = IsColorDepth10(state);
+
                 // Only hevc and vp9 formats have 10-bit hardware decoder support now.
                 if (isColorDepth10 && !(string.Equals(videoStream.Codec, "hevc", StringComparison.OrdinalIgnoreCase)
                     || string.Equals(videoStream.Codec, "h265", StringComparison.OrdinalIgnoreCase)
@@ -2623,13 +2798,6 @@ namespace MediaBrowser.Controller.MediaEncoding
                         case "h264":
                             if (_mediaEncoder.SupportsDecoder("h264_cuvid") && encodingOptions.HardwareDecodingCodecs.Contains("h264", StringComparer.OrdinalIgnoreCase))
                             {
-                                // cuvid decoder does not support 10-bit input.
-                                if ((videoStream.BitDepth ?? 8) > 8)
-                                {
-                                    encodingOptions.HardwareDecodingCodecs = Array.Empty<string>();
-                                    return null;
-                                }
-
                                 return "-c:v h264_cuvid";
                             }
 
@@ -2896,21 +3064,24 @@ namespace MediaBrowser.Controller.MediaEncoding
         /// </summary>
         public string GetHwaccelType(EncodingJobInfo state, EncodingOptions options, string videoCodec)
         {
-            var isWindows = Environment.OSVersion.Platform == PlatformID.Win32NT;
+            var isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+            var isLinux = RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
             var isWindows8orLater = Environment.OSVersion.Version.Major > 6 || (Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor > 1);
             var isDxvaSupported = _mediaEncoder.SupportsHwaccel("dxva2") || _mediaEncoder.SupportsHwaccel("d3d11va");
 
             if ((isDxvaSupported || IsVaapiSupported(state)) && options.HardwareDecodingCodecs.Contains(videoCodec, StringComparer.OrdinalIgnoreCase))
             {
-                if (!isWindows)
+                if (isLinux)
                 {
                     return "-hwaccel vaapi";
                 }
-                else if (isWindows8orLater)
+
+                if (isWindows && isWindows8orLater)
                 {
                     return "-hwaccel d3d11va";
                 }
-                else
+
+                if (isWindows && !isWindows8orLater)
                 {
                     return "-hwaccel dxva2";
                 }
@@ -3000,7 +3171,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 args += " -mpegts_m2ts_mode 1";
             }
 
-            if (EncodingHelper.IsCopyCodec(videoCodec))
+            if (IsCopyCodec(videoCodec))
             {
                 if (state.VideoStream != null
                     && string.Equals(state.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase)
@@ -3102,7 +3273,7 @@ namespace MediaBrowser.Controller.MediaEncoding
 
             var args = "-codec:a:0 " + codec;
 
-            if (EncodingHelper.IsCopyCodec(codec))
+            if (IsCopyCodec(codec))
             {
                 return args;
             }
@@ -3179,5 +3350,42 @@ namespace MediaBrowser.Controller.MediaEncoding
         {
             return string.Equals(codec, "copy", StringComparison.OrdinalIgnoreCase);
         }
+
+        public static bool IsColorDepth10(EncodingJobInfo state)
+        {
+            var result = false;
+            var videoStream = state.VideoStream;
+
+            if (videoStream != null)
+            {
+                if (!string.IsNullOrEmpty(videoStream.PixelFormat))
+                {
+                    result = videoStream.PixelFormat.Contains("p10", StringComparison.OrdinalIgnoreCase);
+                    if (result)
+                    {
+                        return true;
+                    }
+                }
+
+                if (!string.IsNullOrEmpty(videoStream.Profile))
+                {
+                    result = videoStream.Profile.Contains("Main 10", StringComparison.OrdinalIgnoreCase)
+                        || videoStream.Profile.Contains("High 10", StringComparison.OrdinalIgnoreCase)
+                        || videoStream.Profile.Contains("Profile 2", StringComparison.OrdinalIgnoreCase);
+                    if (result)
+                    {
+                        return true;
+                    }
+                }
+
+                result = (videoStream.BitDepth ?? 8) == 10;
+                if (result)
+                {
+                    return true;
+                }
+            }
+
+            return result;
+        }
     }
 }