Please add UXP Caption Track editing capabilities

Building production UXP panels at a broadcaster to restyle broadcast → online sequences (different caption styles).

Issue: UXP can access CaptionTrack objects but lacks APIs to:

  • Edit caption track styles
  • Copy/move caption track items between tracks
  • Modify caption item properties

Impact: Cannot automate caption workflow despite full video track/MOGRT support existing.

Request: Add UXP APIs for:

  1. CaptionTrack.setStyle() or applyTrackStyle()
  2. Caption track item copy/move between tracks
  3. Caption item property editing (similar to ComponentParam for MOGRTs)

Caption-heavy newsroom workflows cannot be automated without these APIs.

Thanks for considering!

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