SOLVED: Playback Error - New User/Setup

[TheDreadPirate]

Transcoding isn't just for changing the bit rate. It is also for client compatibility. Which is the problem. Your client can't play the file as is and wanted a transcode but the transcode failed. And I need to see the ffmpeg log (same directory as the main Jellyfin log) to figure out why. Could be as simple as a permission issue, but I'd need to see the log to figure that out.