Improve subtitle / audio delay UX and UI
Allow the user to set the (subtitle or audio) delay by using visual and/or audio clues.
Motivation and Context
How Has This Been Tested?
Screenshots / GIFs (if appropriate):
Types of changes
- Bug fix (non-breaking change which fixes an issue)
- New feature (non-breaking change which adds functionality)
- Enhancement (non-breaking change which cleans up / improves existing functionality)
- Breaking change (fix or feature that would cause existing functionality to change)
- I have read the CONTRIBUTING section of the README document.
Fixes: # Mention: #1162 (closed)