I noticed my home servers SSD running out of space and it ended up being my Jellyfin Docker container which wasn’t clearing the directory for transcodes in /var/lib/jellyfin/transcodes correctly.
I simply created a new directory on my media hard drive and bind mounted the above mentioned directory to it. Now Jellyfin got over 1 TB of free space to theoretically clutter. To prevent this I simply created a cronjob to delete old files in case Jellyfin isn’t.
/usr/bin/find /path/to/transcodes -mtime +1 -delete
Easy!
Personally I have a secondary external SSD I use for my cache and transcode directories so that my transcodes aren’t throttled by being read from and written to the same disk.
Also of note is that Jellyfin does have a cron job built into it to clear the transcodes directory. You can see it under Dashboard -> Scheduled Tasks -> Clean Transcode Directory. I have mine set to run every 24 hours.
Yeah, but the cleanup job doesn’t seem to work reliably. I noticed because my home server ran out of disk space because the transcoding directory was over 30 GB in size.