Playback always starts from beginning after resume, fast forward, or similar

[gatorz]

I'm new to Jellyfin and have seen similar issues posted online from a few years ago, but most of them conclude with the statement the bug should be fixed in newer versions. However, I'm still getting this issue for certain file types.

Whenever I resume, fast forward, or any other method to select playback position on my Roku the media always starts over from the beginning. It will play from beginning with no issues. I also have no issues when I access Jellyfin via Firefox on my windows computer. This only happens for certain file types.

Server Version: 10.8.13
Operating System: Windows
Architecture: X64

Roku Jellyfin Version: 2.0 build 5
Roku Streaming Stick 4K: 3820R2
Roku SW Version: 12.5.5 build 4174-E6

Problem file type:
Media file type: MKV
Encoding: H264
Video: AVC, 1920x1080, 25fps, Remux @ 4152 Kbps
Audio: AAC, 2ch, 48.0 KHz @ 124 Kbps

Thanks for your time.

[TheDreadPirate]

Try running this command in the command prompt. You may need to specify the full ffmpeg path.

Code:

ffmpeg -fflags +genpts+igndts -i "D:\path\to\video.mkv" -map 0:v -map 0:a -map 0:s -map_chapters 0 -c:v copy -c:a copy -c:s copy max_muxing_queue_size 2048 -avoid_negative_ts make_zero -max_interleave_delta 0 newFile.mkv

[onfiretv]

I just setup Jellyfin (Synology DS220+) and have the same issue (Android/FireTV app) with some videos (MKV), using an external player (Nova) fixes the issue but it doesn't save position. It seems to be a client issue, any suggestions would be appreciated.

[TheDreadPirate]

If it is some MKVs, my suggestion of remuxing the file is probably the solution. Some players are more resilient to malformed files.

[onfiretv]

Thanks. I will give that a go, but with thousands of files and not knowing which are going to work or not it's really annoying. I think using Nova as the external player is a better solution, if only it would remember the position, I'm not sure if that's a Jellyfin issue or a problem with Nova. It remembers the position and resumes when used standalone just not when launches via Jellyfin.