What client are you having issues on? Is it a specific client or all clients? The ffmpeg log looks normal, but it is being commanded to stop. Probably by the client failing to play for some reason.
Jellyfin 10.10.1 (Docker)
Ubuntu 24.04 LTS
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
3x WD Red Pro 6TB CMR in RAIDZ1 (JF Library)