Sound Correction/ 24fps footage on burnt DVD

FuTz wrote on 7/25/2003, 8:56 AM
I got a friend who's got footage made with a Panasonic 24fps burnt on a DVD.
Problem is that sound is really low.
I thought I could "normalize" his sound track but will I be able to open these shots from the DVD in Vegas?
And the fact that it was recorded 24 fps, will it make a difference?
I ask cause the camera was rented and I think playing the original tapes in my Sony cam (29,97 fps) won't work, but since he got his masters burnt on DVDs...

And is "normalizing" the best way to correct these sound tracks or is there another way that would be better?

Thanks!

Comments

mikkie wrote on 7/25/2003, 9:43 AM
Normalization raises the volume levels while trying to keep the original dynamic range, and yes, probably be the best way to do it.

If the DVD masters are simply archived DV footage, should just be a matter of opening them up in Vegas, doing the audio, and rendering back out - don't think the video will or should be effected at all.

If the DVDs are DVDs in the sense of being mpg2 encoded, not just used as a giant CD, then the trick will be to strip the audio, work on it, then put it back without altering the mpg2 video. Actually not that hard, but you should read the various guides at digital-digest.com, dvdrhelp.com, and doom9.org, where you can also download whatever tools.

In general, the vob files on a DVD hold both the mpg2 video, and either mpg or ac3 audio. You can just strip the audio out, stick in your new track, then alter the ifo files that made the DVD work. However, that's a bit of a learning curve... Might be easier to strip both the mpg2 and audio & re-author using your new audio track.
FuTz wrote on 7/26/2003, 1:24 PM

Thanks a lot for feedback mikkie!
SonyDennis wrote on 7/31/2003, 5:02 PM
I agree that you should demux the audio & video, process just the audio, and then re-mux them together.

However, I thought that I would add that many devices can read DVX100 tapes and preserve the 24p metadata. Only a few devices have been found that strip the needed headers and prevent extracting the 24p frames. So, even though you rented the camera, you should be able to use your Sony to recapture.

///d@