So here is my situation: I have a video recording of an event with not so good audio, but also a separate high quality audio recording. The problem is that the audio recordign speed is not the perfect match to the video recording, and when I put them in overlap, audio runs about 2-3 seconds quicker than the video by the end; seems real bad.
the obvious solution is to adjust the speed of the audio to match the length of the video; sounds easy.
One small problem is that the audio recording and the video recording were not perfectly synced, so the audio has some superfluous part at the end, so all in all the situation is as below:
Video track length: 1:57:16
Audio track length 2:14:20 with a lot of wasted part at the end
Current length of the Desirable Audio track: 1:55:15; this is the part which should in fact finish at 1:57:16 to match the video.
Below is what I did:
1- Clipped the audio at 1:55:15, Let us call the first part of the audio (the desirable one) Audio A, and the remaining part, Audio B
2- Deleted Audio B from the audio track
3- Pressed shift and dragged Audio to match the length of the video hoping that it will speed the audio track perfectly to cover the 2 seconds gap
4- Played the audio clip to see if it worked; Result: weird. Instead of keeping the track contents as it is and only changing the speed, it somehow resurrected some contents from the Audio B. I thought I had deleted that
. So now it plays the same length as the video, but with added audio contents at the end, so the problem remains where it was.5- Pressed undo, to instead try the Speed / time-lapse dialog on Audio A. Right clicked audio A, clicked on Speed / Time-lapse and entered the time for which it should play directly.
6- played the audio clip to see if it worked; Result: same as 4.
7- Pressed undo again, and tried reducing the speed this time instead of entering the exact time manually. Even 99% stretched the video way beyond the length of the video (as I expected) but strangely enough the contents from the deleted Audio B are still appended at the end.
8- This time tried to shrink the stretched audio to the length of the video by using Shift+drag. And it works perfectly for the stretched clip, but that had the audio contents from Audio B anyway. So the result is exactly the same as 4 & 6
.9- Trying to delete the unwanted audio bits at the end of Audio A from Audio B, and then stretching the Audio A to the right length actually reduces the Audio A further down, deleting some part of the wanted audio too :S ... thus just turning the problem upside down ... weird really.
10- Did several other experiments. Result: lack of sleep, headache, some frustration and a long day ahead
can anyone help me please in either achieving what I want to do as explained above, or at least showing how I can ensure that the deleted part of the audio is not ghosting around like that :S
I am using Corel videoStudio X5 Pro with Service pack 1.
Thanks much in advance.
Kind regards,
Sarosh
... not sure how I missed that one .... thanks much for the suggestion though; i hope Audacity will do the trick for me.
. Tried several things but there was just no way that it could speed the required audio contents correctly to remove the 2 seconds lag without adding or deleting something from the audio. It is as if the algorithms used are not mature enough to spread the small 2 seconds stretch across the almost 2 hours audio precisely, and ends up "rounding up or down" the content. Quite disappointing as I was expecting a much more sophisticated solution from Corel