Cleanup file related code (#14023)

1 files changed, 3 insertions, 3 deletions

diff --git a/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs b/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
index 1f2bc2403..48a0654bb 100644
--- a/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
+++ b/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
@@ -133,9 +133,9 @@ namespace MediaBrowser.MediaEncoding.Attachments
             var outputFolder = _pathManager.GetAttachmentFolderPath(mediaSource.Id);
             using (await _semaphoreLocks.LockAsync(outputFolder, cancellationToken).ConfigureAwait(false))
             {
-                Directory.CreateDirectory(outputFolder);
-                var fileNames = Directory.GetFiles(outputFolder, "*", SearchOption.TopDirectoryOnly).Select(f => Path.GetFileName(f));
-                var missingFiles = mediaSource.MediaAttachments.Where(a => !fileNames.Contains(a.FileName) && !string.Equals(a.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase));
+                var directory = Directory.CreateDirectory(outputFolder);
+                var fileNames = directory.GetFiles("*", SearchOption.TopDirectoryOnly).Select(f => f.Name).ToHashSet();
+                var missingFiles = mediaSource.MediaAttachments.Where(a => a.FileName is not null && !fileNames.Contains(a.FileName) && !string.Equals(a.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase));
                 if (!missingFiles.Any())
                 {
                     // Skip extraction if all files already exist