Subtitle need to be managed in an on-prem/hybrid/BYOC MAM solution. It should be possible to import subtitles from different format, change them, and export them to physical files again.
Subtitle information is completely manage in VidiCore. See Subtitles [INT ENT XY.Z ARC] for more details.
Import of subtitles to VidiCore can be done via sidecar imports.
Export of subtitles to physical files can be achieved via VidiCore’s subtitle export functionality.