2025-10-05, 04:31 PM
When transcoding audio/video Jellyfin does not (or does, but in a wacky way) take into consideration the offsets of streams. For example if you add an '-itsoffset' flag to a stream with ffmpeg, and try to play that with Jellyfin with transcoding, it will ignore the offset. Even more odd is that sometimes scrubbing forward in the timeline and back to the start solves this issue. In other cases it for some reason starts to take it into consideration 1-2 minutes into the stream (in my case: -itsoffset 0.5 to one audio stream, and 1 minute into the movie it realized it was wrong and corrected it by repeating 0.5 seconds of the audio stream).