22.0.0.63 M1 Mac - Caption Failure

Took a minute and 15 seconds to export a WAV file. Imported the WAV file into the existing sequence, muted the audio track, tried both Mix, and selected the new WAV track only. Nothing worked.

Created a new sequence with just the rendered audio track and successfully created transcription and captions. 

This led me to think that it was the format of the audio track in the project. All audio for this production, all 26 hours of source footage, was shot double system sound. Here are the specifications for the audio.

When I removed the 24-bit audio track from a copy of the sequence and replaced it with the rendered audio the problem was still there. If I created a new sequence from the rendered 16-bit audio file and added the video only. There were no problems were transcribing the audio.

As soon as I got the successful transcription render, I thought it must be the Sequence Settings so I changed the original sequence settings from 96Khz to 48Khz, and the captions rendered just fine. I almost always work with 96Hkz audio files because I almost always have some serious audio cleanup to do when working on documentary and feature film projects.

I am almost positive the bug is in the sequence settings. Premiere Pro Beta does not seem to be able to Transcribe anything that is not in a 48Khz sequence.

I hope this helps fix the bug.

Could you try to export that same Sequence to Waveform Audio? This would help us determine if it's a general render issue.

Thank you!