Too many caption tracks on timeline

Andy, I could not remember how to hide caption tracks; I knew it was there!

Atdhe, I'm not sure what you intend. Do you want a new transcription go on the same caption track as previous captions? Are you trying to get multiple captions on screen at once, or just associating captions with certain parts? Is the audio for each section from different files?

If each final video is only using the captions from the transcription related to it, the "many caption tracks" may work okay as long as you name them appropriately. Yes, it is messy.

I'm still playing with the capabilities of the transcription/re-transcription and the new "caption track is no longer a video track" workflow. So I'm going to describe my tests even though they may not apply to your situations.

Copy/paste:

You can manually merge caption track content using copy and paste. Select the captions in any caption track, all of them or only part. Before copying, set the CTI (current time indicator) at the time reference point you want to use. Copy (Ctrl-C worked for me.) Set the Track Targeting to the caption track you are pasting to. Set the CTI to the time reference point you want. Paste.

Re-transcription:

• It creates a NEW caption track from the entire transcript. Name your captions tracks so can easily see which is the "old" track. You would probably want to delete the old caption track.
• It keeps edits you made in the part you are not re-transcribing.
• It was probably intended for situations where you have updated only part of the timeline and want to retranscribe that section. If you have all your audio at the beginning of your edit, it is probably best to just transcribe it all at the beginning.
• Since transcription is still beta, this information is not yet in the release version user guide.

Using the "retranscribe sequence" option. Set in and out points for the first section you want to transcribe (or do not set for the whole timeline). You can do this for single or multiple videos on the timeline. In the Create Transcript dialog, check "Transcribe in point to out point only" and do  not check "Merge output." Then click Create Captions. Edit one of the captions to demonstrate that the next transcription does not overwrite the first part. Rename the caption track so you will know later which caption track was the original. 

Now set in and out points for the next part of your timeline, or add video and set in and out points for that. In the Transcript tab, click the 3 dots and pick "Re-transcribe sequence." Check both the "Transcribe in to out" and "Merge output" boxes. Transcribe and then click "Create Captions."

It creates a new caption track. but it contains both transcriptions and it kept the edit from the old part.

Stan

As the Speech2Text feature is still in development, some workflows might not have been addressed yet. Have you tried separating your multiple social videos to different sequences to keep the multiple subtitles caption confusion to a minimum?

You can also choose in the CC menu "Show active caption track only" vs. show all caption tracks.