I’m getting the error Implementation for video decoder 'av1' not found. while using Firefox. Firefox has native support for AV1 and my guess is the transcoder is trying to transcode the video.
Since the transcoder is basically a custom packaged version of FFMPEG it shouldn’t be too bad to add AV1 support with the correct compilation flags, this would have to be done on Plex’s end. I bet there is also some configuration wiring that needs to happen so players can report that they support AV1 so it can be remuxed for direct play.
+1 for AV1 Support!
