On Sat, Nov 01, 2008 at 08:48:05PM -0400, Andrew wrote:
> On Fri, Oct 31, 2008 at 12:29:03PM +0100, Maik Holtkamp wrote:
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> > 
> > Hi,
> > 
> > 0n 08/10/[EMAIL PROTECTED]:58 Andrew told me:
> > 
> > > On Tue, Oct 21, 2008 at 11:27:04PM -0400, Andrew wrote:
> > > > 
> > > > After fumbling with options I came up with a command line that
> > > > seems to almost work; however, the last and seemingly(?) crucial
> > > > option I added, "-A", produces the fatal error " critical: Oops,
> > > > this version of transcode only supports PCM data for audio
> > > > transformation"
> > > > 
> > > > That led me to search for a way to rebuild my (1.0.6) transcode
> > > > with AC3 support enabled but i didn't find any clues in
> > > > documentation.
> > > > 
> > > > Bottom line here: how do I transcode VOB's to AVI's, with AC3
> > > > audio fully preserved, with as many channels as i start out
> > > > with?
> > > > 
> > > > I found a wiki saying that transcode automatically mixes 3 or
> > > > more audio channels down to stereo (2 channels).  But what if i
> > > > don't want this?
> > > > 
> > > > I know there is a way to preserve 5.1 or whatever, when
> > > > transcoding VOB to avi's (ffmpeg) -- (handbrake does it, for
> > > > example)
> > > 
> > > This is a essentially a "bump"
> > > 
> > > is there no way to transcode VOB's to AVI's and preserve the
> > > original AC3 audio? (Is the downmixing "magic" always imposed upon
> > > you, even if you don't want it? :-)
> > > 
> > > Or, at least, to extract/dump the AC3 audio as a separate file?
> > > 
> > > (mencoder does this. But mencoder doesn't handle multiple VOB's as
> > > one (concatenated?) input, the way transcode does)
> > 
> > I would try to use mencoder/mplayer's -dumpaudio to handle the sound
> > separately and use avimerge for muxing/merging the results.
> 
> My files  are a bunch of *.vob files
> 
> (I would use mencoder to transcode to avi if it mencoder took multiple 
> "*.vob" as input. Does it?)
> 
> Are you suggesting I -dumpaudio for each individual *.vob, and then 
> concatenate the resulting "*.avi" files into one?

sometimes one makes a post that is so abysmally incoherent and ridden with 
typos that posting a self-correction is a MUST. I apologize for the above. What 
I *really* meant to write was:

My *input* files are *.vob's.  I would use mencoder if mencoder took multiple 
*.vob files as input. AFAICT, it doesn't (am i wrong?)

Are you suggesting that I dump the AC3 audio for each VOB, piece together the 
AC3 segments,  and mux the resulting full ac3 into the avi file?

Not sure, off the top of my head, how to do this, and whether i'll have to 
watch out for a/v sync problems, but i might give it a try, failing an easier 
route.

thanks
andrew

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