The basic reason why you have no sound is that QuickTime does not come
with an AC3 codec. iMovie and many other programs under Mac OS X use
QuickTime to read video and sound. A VOB file can have separate
streams which are each encoded with different codecs. Luckily you can
separate the streams into individual files and convert the AC3 stream
to a useable format, using only free software. Here are the basic
steps I would use:
1. Use MacTheRipper to get the VOB file (you already did this). You
said you were able to "clip out a section." May I suggest a simpler
way that may work for you? Often times the part you want is already a
chapter or title. By exporting just that part you can avoid
audio/video synchronization problems later. You can determine the
title and chapter by watching the DVD in Apple's "DVD Player" and
choosing Window->Navigator from the menu. A hovering window will open
showing you the title, chapter, and other time information. Once you
get that information you can plug it into MacTheRipper in the "Mode"
tab. Just change the mode from "full disc extraction" to title or any
other option you find may narrow it down for you.
MacTheRipper
http://www.versiontracker.com/dyn/moreinfo/macosx/22715
2. Next you want to separate the VOB file into the audio and video
streams. For this I suggest using bbDEMUX. This couldn't be easier.
Just launch bbDEMUX and drag your VOB file into bbDEMUX's dock icon.
When it's done you should have an M2V (MPEG-2 Video) file and an AC3
(the previously unreadable AC3 audio) file.
bbDEMUX
http://www.versiontracker.com/dyn/moreinfo/macosx/14618
3. Now you need to get the AC3 file into a format iMovie can read.
Luckily there is another simple freeware program called bd4go for
doing this part. Launch the program and press the "Select AC3 File"
button in the program's window. Next, find you AC3 file and open it.
The program will then convert the AC3 file to an AIFF file. If you
want to do some cleanup at this point, the only 2 files you need are
the M2V file and the AIFF file.
bd4go
http://www.versiontracker.com/dyn/moreinfo/macosx/15956
4. Next you want to recombine your files in iMovie. Open up iMovie
and press the "New Project" button. Choose a name for your project
and continue. Next drag the M2V file directly into the timeline at
the bottom of the iMovie window. After that drag your AIFF to the
timeline too. When you drag the audio to the timeline you will notice
that it will split into audio and video channels with video on top and
audio on the bottom. Just make sure you get the audio nice and lined
up at the beginning of the track.
5. Finally, to create a DVD in iDVD, select the iDVD tab in iMovie and
press "Create iDVD Project." iMovie will then launch iDVD and it will
be automatically imported. From this point you can pretty much just
hit the "burn" button in the lower right hand corner of iDVD and
you're set.
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This is just one way to accomplish what you want. For each step there
are program substitutions that can be made. For example, you don't
really need to use iMovie if you have QuickTime pro. There are also
several freeware program for decoding AC3 files. I say this because
you may find that certain programs work for some videos and not
others. It can be very frustrating at times, but I keep many small
programs in my repertoire in case one does not work. I wish I could
tell you one way that would work for you every time, but that has not
been my experience. Hopefully this will work out well for you. Good
luck! |
