Posted by Frank on 01/10/87 11:44

On Thu, 6 Apr 2006 17:06:14 -0400, in 'rec.video.desktop',
in article <Ripping audio and video from a DVD...on a Mac>,
Ty Ford <tyreeford@comcast.net> wrote:

>OK, I'm not pirating anything. My client has asked me to clean up some bad
>audio from a VHS videotape.
>
>She digitized it as a regular old DVD with Audio_TS and Video_TS folders.
>There's nothing in the Audio folder and six files in the Video Folder; a
>Video_TS BUP and IFO, and four VTS files -- BUP, IFO, and two VOBs.
>
>Mac The Ripper gives me a 31 MB .m2V file and 8 MB 2ch.pcm file on one pass.
> I know the audio is the PCM, but no Mac app I have seems to want to open it.
>Quicktime Pro gives me a -2048 error. I'm Running QT 7.04 Pro.
>
>I think there are six separate chapters on this particular disc.
>
>Thanks,
>
>Ty
>
>
>
>-- Ty Ford's equipment reviews, audio samples, rates and other audiocentric
>stuff are at www.tyford.com



Hello Ty:

If we were neighbors, I would do this for you in Adobe Audition, but
since we're not, you'll simply need to get your hands on a decent
Mac-compatable audio editing program such as one of the Bias Peak
products, or some other program which handles raw PCM files. After
you've successfully opened the file in a program such as this, you can
immediately save it out as an .aiff file, as a .wav file, or even as
an audio-only .mov file for subsequent use in other applications.

Peak comes in three flavors these days: Peak LE, Peak Pro, and Peak
Pro XT. Even Peak LE, the lowest priced of the three versions, should
be able to do the job, although it's limited to 24/96 while the two
higher-end products support bit depths up to 32 and have no sampling
rate restrictions.

When you attempt to open the file, you'll have to inform the program
as to the bit depth and sampling rate of the datastream. For the
DVD-Video disc that you've described above, it's most likely 16/48,
but you'll know immediately just by looking at the waveform display --
or by playing the file. It will sound like hash if you've guessed
incorrectly. Just keep trying different combinations of bit depth and
sampling rate until you hit upon the right one.

You'll also need to specify the number of channels, most likely two in
this case, whether the data is signed or unsigned, and whether the
samples are stored in Big Endian (Motorola) or Little Endian (Intel)
format.

Good luck!

--
Frank, Independent Consultant, New York, NY
[Please remove 'nojunkmail.' from address to reply via e-mail.]
Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/

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