[Issue]: Buffer stalling when playing HLS H264 MKV video's on several browser types

[martijnvankekem]

Please describe your bug

After a few minutes of playback, the player suddenly stops. No useful log message is visible server sided. Client-side logs show that the buffer has stalled. The only way to resume playback is by restarting the player or switching to a different quality, which requires the transcode to restart.

Jellyfin Version

Other

if other:

10.8.13

Environment

- OS: Debian
- Virtualization: None
- Clients: Browser
- Browser: Chrome 105, Firefox 105, Edge 106
- FFmpeg Version: ffmpeg version 5.1.1-Jellyfin
- Playback Method: Transcode
- Hardware Acceleration: None
- Plugins: None
- Reverse Proxy: None
- Base URL: none
- Networking: Host
- Storage: local

Jellyfin logs

[2022-10-11 14:21:13.817 +02:00] [INF] Current HLS implementation doesn't support non-keyframe breaks but one is requested, ignoring that request
[2022-10-11 14:21:13.818 +02:00] [INF] "/usr/lib/jellyfin-ffmpeg/ffmpeg" "-analyzeduration 200M -ss 00:34:54.000 -f matroska,webm -autorotate 0 -canvas_size 1920x1080 -i file:\"/storage/media/Series/The Blacklist/Season 06/The.Blacklist.S06E04.The.Pawnbrokers.1080p.10bit.BluRay.AAC5.1.HEVC-Vyndros.mkv\" -map_metadata -1 -map_chapters -1 -threads 0 -map 0:0 -map 0:1 -codec:v:0 libx264 -preset veryfast -crf 23 -maxrate 9570100 -bufsize 19140200 -profile:v:0 high -level 51 -x264opts:0 subme=0:me_range=4:rc_lookahead=10:me=dia:no_chroma_me:8x8dct=0:partitions=none -force_key_frames:0 \"expr:gte(t,2094+n_forced*3)\" -sc_threshold:v:0 0 -filter_complex \"[0:3]scale=trunc(min(max(iw\,ih*a)\,min(1920\,1080*a))/2)*2:trunc(min(max(iw/a\,ih)\,min(1920/a\,1080))/2)*2[sub];[0:0]setparams=color_primaries=bt709:color_trc=bt709:colorspace=bt709,scale=trunc(min(max(iw\,ih*a)\,min(1920\,1080*a))/2)*2:trunc(min(max(iw/a\,ih)\,min(1920/a\,1080))/2)*2,format=yuv420p[main];[main][sub]overlay=eof_action=endall:shortest=1:repeatlast=0\" -start_at_zero -codec:a:0 libfdk_aac -ac 2 -ab 384000 -ar 48000 -af \"volume=2\" -copyts -avoid_negative_ts disabled -max_muxing_queue_size 2048 -f hls -max_delay 5000000 -hls_time 3 -hls_segment_type mpegts -start_number 698 -hls_segment_filename \"/storage/media/transcodes/6a8e118c323e27f6aa168833512b9376%d.ts\" -hls_playlist_type vod -hls_list_size 0 -y \"/storage/media/transcodes/6a8e118c323e27f6aa168833512b9376.m3u8\""

FFmpeg logs

[hls @ 0x55eafba6dc40] Opening '/storage/media/transcodes/6a8e118c323e27f6aa168833512b9376714.ts' for writing
frame= 4320 fps= 99 q=28.0 size=N/A time=00:03:00.26 bitrate=N/A speed=4.13x    
frame= 4364 fps= 99 q=28.0 size=N/A time=00:03:01.97 bitrate=N/A speed=4.12x    
frame= 4419 fps= 99 q=28.0 size=N/A time=00:03:04.25 bitrate=N/A speed=4.12x    
frame= 4481 fps= 99 q=28.0 size=N/A time=00:03:06.98 bitrate=N/A speed=4.14x    
[hls @ 0x55eafba6dc40] Opening '/storage/media/transcodes/6a8e118c323e27f6aa168833512b9376715.ts' for writing
frame= 4536 fps= 99 q=28.0 size=N/A time=00:03:09.24 bitrate=N/A speed=4.14x    
frame= 4592 fps= 99 q=28.0 size=N/A time=00:03:11.50 bitrate=N/A speed=4.15x    
frame= 4647 fps=100 q=28.0 size=N/A time=00:03:13.87 bitrate=N/A speed=4.15x    
frame= 4698 fps=100 q=28.0 size=N/A time=00:03:15.99 bitrate=N/A speed=4.15x    
frame= 4755 fps=100 q=28.0 size=N/A time=00:03:18.57 bitrate=N/A speed=4.16x    
[hls @ 0x55eafba6dc40] Opening '/storage/media/transcodes/6a8e118c323e27f6aa168833512b9376716.ts' for writing
frame= 4820 fps=100 q=28.0 size=N/A time=00:03:21.13 bitrate=N/A speed=4.17x    
Transcoding is paused. Press [u] to resume.

Please attach any browser or client logs here

Please attach any screenshots here

Code of Conduct

• I agree to follow this project's Code of Conduct

[jellyfin-bot]

Hi, it seems like your issue report has the following item(s) that need to be addressed:

• This bug report was not filed using the issue template.

This is an automated message, currently under testing. Please file an issue here if you encounter any problems.

[gnattu]

It seems like you are having throttling transcode enabled, please try disable it in the dashboard. That option is known to have compatibility issues with certain hardware.

[felix920506]

You should disable the throttle transcodes options, per the help text of that option.

Please head to our forum or chat rooms for troubleshooting help if you have further issues. https://jellyfin.org/contact