There are a number of reasons why you would want to un-link the video and audio portions of a clip in Premiere Pro. However, this can also lead to the clips moving out of sync with each other, which may not matter much for clips without dialogue, such as clips of the sea or scenery. But for obvious reasons, this can be very important when dealing with dialogue, as the mouth will move at a different time to the audio – which is obviously completely unacceptable.
When you move the audio and video portions of a clip out of sync, Premiere Pro gives you great notice and options for moving them back into sync again.
First, this is the kind of warning you get when a clip is out of sync:
This tells us that the audio is + 2 seconds and 13 frames ahead of the video. A negative figure would tell you that the audio is behind the video.
To find the options below right-click on the red indicator, however, you need to think which of the two portions you want to right click on, as the end result will vary depending on which you have chosen.
The ‘Move into Sync’ option moves the portion you right-clicked on the red warning indicator on back into sync. For this clip, we would obviously want to right-click on the audio portion indicator…
… because if you had right-clicked on the video portion, it would have left a gap.
And your audio and video are back in sync.
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