Does MTR provide Stream Info? (AIFF from PCM related)

[dotheDVDeed]

I've been using the AIFF from PCM program along with Peak to make CD-compatible files.

One problem I've run into is that AIFF from PCM cannot recognize the parameters of the PCM file and so the user has to plug these values in before converting it to an AIFF file.

PCM files can commonly be 96kHz or 48kHz, 24 bit or 16 bit. The AIFF has to be correctly labeled to work correctly.

I'm currently checking the DVD on my home standalone player to get the specs of the PCM file, ripping with YadeX, then converting with AIFF from PCM. Can I cut the standalone player out of my work process and get the PCM specs on the Mac? I've tried Apple's DVD player and VLC but can't find the info I need there.

TIM

[pianoman719]

I suggest downloading MPEG Streamclip (freeware) and see if it helps you.

Most DVDs with PCM audio I've seen are homemade discs with no copy protection. The PCM audio on such discs is usually 48 kHz 16-bit stereo. Streamclip can "Demux to AIFF" such material directly from the DVD. (Just open the VOBs.) You can also set in/out points in Streamclip to demux selected chunks of audio. It's best to pad the in/out points by a couple of seconds, then do fine editing in a dedicated audio app.

If you own a copy-protected DVD with PCM audio, use Yade X to rip the part you want to a VOB (not Streams). Then open the VOB in Streamclip and Demux to AIFF. (Streamclip does fine with files like VOB or MPEG where the video and PCM are muxed together, but doesn't like to open solo PCM audio files.)

Not a perfect method, but can be useful. Both Yade X and Streamclip offer fairly stable operation. I've never encountered PCM files on a DVD that were anything other than 16-bit, 48 kHz, so can't say how well Streamclip would convert other bitrates and sampling rates. When you have a VOB open, just hit Cmd-I to get info on the stream. Let us know if Streamclip correctly reports the bitrate and sampling rate.

Using MPEG Streamclip for an audio-only task might seem like overkill, but it's an app that's often a pleasure to use. To have the most fun with Streamclip, you need the QuickTime MPEG2 Playback Component for OS X, a $20 download from the Apple Store.

-Pianoman

[dotheDVDeed]

Thanks, it good to have an alternate way--this worked fine with a 48Mhz 16bit file--I'll have to try throwing something a little strange at it--and see if it works as well.

TIM

[chikanakan]

You could also use Toast 7. If you have MPEG files, just add them to Video format and export to AIFF, FLAC, OGG, or any other format.

You could also use the media browser to extract the chapter from the DVD and export.

Cinematize is also a good product for extracting audio from DVD.