[Mr_Funky]

How do you burn Mpegs to DVDs? From reading the iDVD help, it appears that you cannot import Mpeg to iDVD...is this correct? If so, I'm guessing I need to convert the Mpeg to another format. But which format and how do I do it? I'm fairly new at this...so excuse my stupid questions.

thanks
Kyle

[Uncle Skeleton]

http://forums.macnn.com/search.php?s...der=descending

[Jim Paradise]

Here's the technique I use.
Demux the video using bbDEMUX. Convert the .m1a audio file to .aiff and then up the volume from 100 to 200 in QT Pro (I'm currently using QT5 Pro). Open up the .m1v video file and do an Add Scaled. This will add the .aiff file that you just copied. Then export it to a QuickTime .mov file using whatever compression you feel is best. I'm currently using the 3ivx D4 4.0.4 until I buy QT6 Pro, but the video looks exactly the same and it produces a relatively small file compared to a lot of the others you can choose from.

You will end up with a .mov file that iDVD will accept with no loss to the audio or video. The reason you need to up the volume on the .aiff file is because no matter what technique you use to convert the .m1a file, there'll be a slight reduction in the volume.

Enjoy.

[Uncle Skeleton]

that's all good except DON'T scale the audio. In this case it won't make too much difference since the video and audio will end up being very close to the same length (and you're probably not going to end up playing it, just re-encoding it), so add-scaling won't make a big difference, in this case. but for that same reason it would make sense to just Add (not scaled). It is a bad practice to scale the audio, and you should just teach yourself to never do it. (when it becomes a problem is most often if you compress to mp3 audio, since mp3 must end on an even keyframe or something, it ends up always changing the length slightly, which means if you scale it to match the video (1) you will change it's length/sample-rate/pitch, (2) it won't sync correctly anymore and (3) it might cause other playback problems depending on the hardware playing it back).

I know, Jim, I've given you this speech before (this week even, right?), and I'm not repeating myself just to scold you. I give it each time it comes up so that no one will haplessly read what you posted and not realize how bad it is to scale the audio. The audio is always right anyway, and if anything is off it's the video (actually, a recent release of mAC3Dec seems to have a version of LAME that adds spaces to the audio, which is the only occurrance of the audio being wrong; but scaling it to the video will only make it wrong-er)

[Jim Paradise]

Originally posted by Uncle Skeleton:
that's all good except DON'T scale the audio. In this case it won't make too much difference since the video and audio will end up being very close to the same length (and you're probably not going to end up playing it, just re-encoding it), so add-scaling won't make a big difference, in this case. but for that same reason it would make sense to just Add (not scaled). It is a bad practice to scale the audio, and you should just teach yourself to never do it. (when it becomes a problem is most often if you compress to mp3 audio, since mp3 must end on an even keyframe or something, it ends up always changing the length slightly, which means if you scale it to match the video (1) you will change it's length/sample-rate/pitch, (2) it won't sync correctly anymore and (3) it might cause other playback problems depending on the hardware playing it back).

I know, Jim, I've given you this speech before (this week even, right?), and I'm not repeating myself just to scold you. I give it each time it comes up so that no one will haplessly read what you posted and not realize how bad it is to scale the audio. The audio is always right anyway, and if anything is off it's the video (actually, a recent release of mAC3Dec seems to have a version of LAME that adds spaces to the audio, which is the only occurrance of the audio being wrong; but scaling it to the video will only make it wrong-er)

I hadn't realized that you had mentioned not to do an Add Scaled earlier this week to me??? But thanks for the heads up!

[Uncle Skeleton]

oh, I guess not. but I wrote it somewhere 2 or 3 times this week. I thought it was in your other thread