Syncplay skip and crash - Printable Version +- Jellyfin Forum (https://forum.jellyfin.org) +-- Forum: Support (https://forum.jellyfin.org/f-support) +--- Forum: Troubleshooting (https://forum.jellyfin.org/f-troubleshooting) +--- Thread: Syncplay skip and crash (/t-syncplay-skip-and-crash)

Syncplay skip and crash - Darth Prime - 2025-07-15 Hello, I'm new to Jellyfin (less than a week) and I just started to run into some syncplay issues. User 1 is able to play through the video without any issues. User 2 (me) gets skipping backwards and forwards after a few minutes of proper sync, then it crashes into a fatal HLS error Jellyfin server is installed on ubuntu 24.04 Noble. User 1 is using firefox in Mint User 2 is using Chrome in Windows Here is the ffmpg log: https://pastes.io/jellypaste Chatgpt (probably not the best source) says I should try these options: Option 1: Disable Subtitle Overlay in Transcoding In Jellyfin settings (under Playback or Client Playback Profile): Set "Subtitle mode" to "None" or "Burn in: Never" Or manually deselect PGS subs for affected files Best fix if you don’t need subtitles burned in Option 2: Remux the file without subtitles To permanently strip problematic PGS subtitles: bash CopyEdit ffmpeg -i "input.mkv" -map 0 -map -0:s -c copy "no_subs.mkv" Then replace the original file or use the stripped one in Jellyfin. Option 3: Avoid overlay filters If burning subtitles is necessary, try re-encoding them using a safer subtitle format: bash CopyEdit ffmpeg -i "input.mkv" -map 0 -c copy -scodec mov_text "converted.mkv" …but note that image-based PGS can’t easily be converted to text. Option 4: Force fresh timestamps If you must burn the subs and can't remove them, try: bash CopyEdit -fflags +genpts -avoid_negative_ts make_zero -copyts This can sometimes stabilize broken timestamps. I'm not sure what to do, can someone help?