In Premiere 26.5.0.99 on Windows, EncoderManager.exportSequence() with QUEUE_TO_APP returns false using both custom and stock Adobe H.264 presets. Matching Media Encoder 26.5 is installed.
Is QUEUE_TO_APP currently supported for third-party UXP plugins? Does it require background rendering to be enabled, and is there a supported way to enable it?
If supported, what prerequisites cause this call to return false, and how can a plugin correlate completion with the specific job and output path?