Hi
You should be able to sync’ the audio and adjust to an accuracy of
one frame.
Try this:-
1 / Make sure the top tracks audio is NOT muted.
2 / Switching to “Sound Mixer” view (wave form icon below preview screen)
3 / You should be able to see the Wav form showing on the timeline.
4 / Using the Zoom In / Out option zoom into the timelines to show the wav form in more detail.
5 / Drag the audio clip to match the top video clip.
6 / By Zoomimg In to the timeline you will be able to drag frame by frame.
Other methods
1 / Make sure your audio clip is downstream, to the right of sync.
2 / Place a short clip (buffer clip) before the audio clip, leaving a short gap.
3 / Drag the audio clip left it should “snap to”, do not overlap.
4 / Adjust / reduce the duration of the buffer clip by a few frames, this will create another gap.
5 / Drag the audio clip to buffer clip (again it should “snap to”)
Remember to zoom into the timeline to make the moves more accurate
Select image for larger view
hope this helps