this post was submitted on 02 May 2025
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Jellyfin: The Free Software Media System

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I set up a 3-yo PC with internal SSD and latest Ubuntu. Am running latest Jellyfin in docker. Client is on an iPad mini. Not much traffic on network.

It finds all the titles fine, but when playing back, the sound is often out of sync by 2-5 seconds, and subtitles are off by 10-15 seconds. You can adjust the subtitle offset through trial and error and maybe get them close, but there's no way to adjust audio sync.

Disabled "Prefer fMP4-HLS Media Container" based on this recommendation: https://github.com/jellyfin/jellyfin/issues/11723

Rebooted and updated all parts. Still didn't fix the issue.

Any other suggestions? It happens across multiple titles.

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[–] theunknownmuncher@lemmy.world 2 points 2 months ago

The performance hit during play and scrubbing is due to need to transcode the video as it burns the subtitles in. If you have hardware acceleration for transcoding configured properly, it shouldn't be a big impact on modern hardware