Years ago, I transferred a video tape of a live band performance to DVD (using a Sony VHS/DVD RW machine that I no longer own). Yesterday, I edited an 8-minute clip from the DVD. The audio/video sync appeared fine inside Premiere, but when I exported to YouTube, the audio and video are completely out of sync.
(I didn't touch the alignment of either audio or video tracks while editing)
All I did was add titles to the beginning and end.
How can I prevent this from happening in the future?