Is there any way to read or write audio transitions (Constant Gain / Constant Power / Exponential Fade)?

Premiere Pro
1

Hi Adobe team,

I’m building a UXP panel for Premiere Pro (version: 26.5.2, OS: Win11)

I able to apply Video transitions, read and write work well. I list them with TransitionFactory.getVideoTransitionMatchNames(), create them with TransitionFactory.createVideoTransition(matchName), and apply them with VideoClipTrackItem.createAddVideoTransitionAction(transition, AddTransitionOptions) inside a transaction. Duration, alignment, single-sided and apply-to-start all behave correctly.

I can’t find an equivalent for audio transitions:

  • TransitionFactory only exposes createVideoTransition and getVideoTransitionMatchNames. There is no audio counterpart.
  • AudioClipTrackItem has no createAddAudioTransitionAction or similar. Its methods (createMoveAction, createSetDisabledAction, createSetStartAction / createSetEndAction, createSetInPointAction / createSetOutPointAction, createSetNameAction) don’t cover transitions.
  • I also enumerated the methods on TransitionFactory and on the audio track item at runtime, looking for anything matching /audio.*transition/i, and found nothing.
  • AudioTrack.getTrackItems(Constants.TrackItemType.TRANSITION, …) is documented, but I haven’t found a way to create a transition to be returned, or to read its type or duration.

Questions:

  1. Is there currently any supported way to create or apply an audio transition (Constant Gain, Constant Power, Exponential Fade) from UXP?
  2. Is there any way to read existing audio transitions on a track item (type, duration, alignment)?
  3. If not, is audio transition support planned, and is there a version or timeline I can follow?
  4. Is there any workaround you would recommend, such as executing a menu command or the default-transition command (Shift+D / Ctrl+Shift+D equivalent) on a selection from a plugin?

Thanks a lot. Even a confirmation that this isn’t possible yet would help me decide how to handle it in the panel.