When rendering videos in Photoshop on macOS, the progress bar stops and doesn't progress any further.

Disable any antivirus software and try the video render again.

Delete all empty Trace Database.txt file(s)

1. Quit Photoshop
2. In the Finder, hold the Option key and select Go > Library
3. Navigate to: /Library/Preferences/Adobe/amecommand
4. Open each subfolder in that location and look for a file called Trace Database.txt. Delete all versions of this file that contain no text entry. 
5. Next, navigate to: /Library/Preferences/Adobe/dynamiclinkmediaserver and delete any empty Trace Database.txt files here.
6. Restart Photoshop

Repeat these steps if the video rendering issue occurs again.