In the case 2 and 3, I re-rendered the media on a different timeline, exported it back with same name and in the same location (off course took backups of original). And it did the trick.
1. Set the snap on
2. take the razor and cut the timeline at equal intervals.
3. take the stretch tool. pull the out points of each ends of the segment and join to the head of the next segment.
I sometimes don’t even have the time to use a clapper board. Nevertheless, in the time line, I just zoom very deep into the audio. align the audio patterns of 2 tracks and lo, I am locked exactly in sync.
I faced this problem, once when my footage had mixed aspect data. My color bars were in 4:3 while my footage was 16:9. PP CS4 takes cue from the first few frames of the video and decides the aspect for the entire footage.
Check if all the source footage is of the same aspect.
You can drag the audio if all the audio layers are in the same format
– Sampling rate, no of channels, bit depth.
If you are using PP cs$ I assume you must be also having a audio editor like Adobe Sound booth. You can convert the second wave to the same sampling rate as the first.