[Cin] Audio/video sync with "Audio Offset"

[Andrea paz]

The manual entry "Audio Offset," which was taken from Adam's manual,
"Secrets of Cinelerra," provides an excellent method for synchronizing
a video track with an audio track. It has been a long time since I
read it and I want to bring it to your attention again:
https://cinelerra-gg.org/download/CinelerraGG_Manual/Audio_Out_section.html

There is also a video tutorial by Adam:
https://www.youtube.com/watch?v=n0evGSOpwbY&list=PLv6Mn7I6pSmWivUKTvf_CzqHjnlKt5zCS&index=10