QuickTime Pro compression question

burgmanguy wrote on 6/24/2009, 3:55 PM

I realize I am in a Vegas Pro forum ... of which I am a subscriber. I thought some of you may have experience with QuckTime Pro.

Video files are native .MOV in camera. If they are brought into QuickTime Pro and trimmed ... i.e. some frames deleted ... and saved back as a .MOV, have they been decompressed and compressed so that the integrity of the saved clip is less than the integrity of its parent.

Or, is the compression no more than on the original.

For example, if 50% of the frames are removed, would the resulting .MOV file be 50% of the size of the parent or would it be much less.

Comments

Former user wrote on 6/25/2009, 6:21 AM

QT is like AVI or MPEG. It can have a lot of variables.

It would depend upon if you were compressing to a different codec than original.

If you are asking if QT recompresses when saving a trimmed file to the same as the original codec, I don't know. But if you compress to a different codec, the file size will vary.

Dave T2