Easiest way to change sound on DVD

[supertoom]

ok... I have a concert on a DVD-R and the quality of the sound is pretty bad. I have the same concert on CD with great sound and hopefully both are from the same source with the same lenghth.

how do I add the CD sound to the DVD and what program should I use? I'm concernd it might be hard to sync.... or?

thanks

[galactica]

is it a music dvd? or a video dvd?
if its video its probably going to darn near impossible to sync the cd to the video!

[supertoom]

yeah it's a video DVD...

but it must be possible? I've seen people do it before (probably on their PC's). And I think the video and the audio CD are from the same source (same TV-program).

Can a program like DVD Studio Pro do it? Final Cut Pro? To start with, how do I rip the DVD to MPEG2 streams? Can OSEx do that? It was some time since I last used that app.

[WiseWeasel]

You're probably not going to get it to synch, but basically, you rip the DVD, extract the elementary streams (OSEx can do that in one step, or rip with whatever and then use Extractor to extract the streams. Then you rip your CD to AIFF using iTunes (choose AIFF as the import format), giving you a [bunch of] 44.1 kHz AIFF file[s]. You then need to open [these files] with QuickTime Pro, [add the successive files to the first one, making one big audio track for the whole CD,] and export it to AIFF at 48 kHz. Then, you need to convert the AIFF to AC3. I use A.pack to do that, it comes with DVD Studio Pro[, though I believe there are some other solutions for that, possibly including ffmpegX]. Then, you would import the m2v video from the DVD, and the AC3 audio you just made into Sizzle or DVD Studio Pro, and make a DVD. I would add the old audio track as well if you have the space, as it will probably synch up a LOT better. In all, it's a lot of trouble, and it's probably not going to synch with the video. Up to you to decide if it's worth it.

[Edit] Minor corrections [/Edit]

[supertoom]

thanks for the reply! I'll give it a try. And the DVD is just 3,7 GB so maybe I can fit the old sound track too (or maybe not).

But again, it must be easier with a video editing app like Final Cut Pro?

[WiseWeasel]

FCP and other video editing apps can't work with MPEG2 video. You might just rip the m2v to divx or something to use in QT to synch up the audio, and then export the audio and convert to ac3, and match it back up to the original m2v. Or you could live with the out-of-synch audio...

[supertoom]

as it turned out the video and the cd audio played at slightly different speed so I guess I have to stick with the bad sound on my DVD.

thanks for the replies anyway!