Next, there was only one slightly laborious process left, which was to synchronize the audio and video time tracks so that the audio and video would be synchronized.

Fortunately, the video file and the audio file were whole, so Elaine only needed to find one of the clips where it was easier to recognize the mouth shape, then echo the corresponding audio of this clip, and the entire video and the audio would be perfectly matched.

Soon, Elaine found a very convenient lip-sync and synchronized t