No. Either you didn't convert the bifs or the conversion failed for some reason and you have to initiate the trickplay job (under scheduled tasks) to regenerate them.
Jellyfin 10.10.7 (Docker)
Ubuntu 24.04.2 LTS w/HWE
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
4x WD Red Pro 6TB CMR in RAIDZ1