YouTube Audio Sync Tool

Fix YouTube audio sync problems by adjusting audio timing in intervals of 0.1 seconds.
It helps when watching videos that have out-of-sync audio, or when using wireless audio systems that have audio delay.
Chrome Extension Available on Chrome Web Store
Firefox Add-on Available on the Official add-on site
1
Audio timing adjustment slider appears under the video screen on your YouTube page with a click of the tool icon.
2
Adjust audio timing to sync audio and video by moving the slider. You can change the audtio timing from -10.0s up to +10.0s.