Enable VideoToolbox AV1 decode

This decoder differs from others provided by VideoToolbox in that it lacks any software fallback. To achieve consistent behavior with other VideoToolbox decoders, this PR implemented additional checking on the server to simulate the software fallback provided by VideoToolbox.

The current fallback checking mechanism is a temporary solution. In the long term, it should be replaced with a more capable hardware capability checking system.

1 files changed, 8 insertions, 0 deletions

diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index 9399679a4..7dea5f8eb 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -6610,6 +6610,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 || string.Equals("yuv420p12le", videoStream.PixelFormat, StringComparison.OrdinalIgnoreCase)
                 || string.Equals("yuv422p12le", videoStream.PixelFormat, StringComparison.OrdinalIgnoreCase)
                 || string.Equals("yuv444p12le", videoStream.PixelFormat, StringComparison.OrdinalIgnoreCase);
+            var isAv1SupportedSwFormatsVt = is8_10bitSwFormatsVt || string.Equals("yuv420p12le", videoStream.PixelFormat, StringComparison.OrdinalIgnoreCase);
 
             // The related patches make videotoolbox hardware surface working is only available in jellyfin-ffmpeg 7.0.1 at the moment.
             bool useHwSurface = (_mediaEncoder.EncoderVersion >= _minFFmpegWorkingVtHwSurface) && IsVideoToolboxFullSupported();
@@ -6643,6 +6644,13 @@ namespace MediaBrowser.Controller.MediaEncoding
                 {
                     return GetHwaccelType(state, options, "hevc", bitDepth, useHwSurface);
                 }
+
+                if (string.Equals("av1", videoStream.Codec, StringComparison.OrdinalIgnoreCase)
+                    && isAv1SupportedSwFormatsVt
+                    && _mediaEncoder.IsVideoToolboxAv1DecodeAvailable)
+                {
+                    return GetHwaccelType(state, options, "av1", bitDepth, useHwSurface);
+                }
             }
 
             return null;