On Tue 30 Nov 2004 16:30, Steven M. Schultz wrote:
> On Tue, 30 Nov 2004, John Gay wrote:
> > I realise this is more of an MPlayer question than mjpeg-tools, but 1) I
> > find this list more helpful
> >
> :)
> >
> > and 2) I think MPlayer can only do half the job anyway.
> >
> > I've got a few Surround-sound asf files that I'd love to hear it all
> > their ...
> >
> > output to my surround-sound stereo system, whch plays 'most' DVD
> > compatible formats, but doesn't recognise these asf files.
>
> That probably means the DVD player wasn't made by Micro$oft <grin>
>
> It's amazing what some folks expect to put on a DVD isn't it? :)
>
Well, since I've got this player, I've been putting many different video and
audio file formats on CD to see what it can play, though I haven't done an
extensive list of what does and doesn't work, yet (-;
> > So I was thinking, if I could convert them to a format it did recognise,
> > say AC3 or so, then I could listen to them properly.
>
> The only freely available AC3 encoder I know of is 'ffmpeg' and the
> last time I tried creating an AC3 file with that the file was
> completely rejected (invalid/bad rematrixing info) by DVD Studio Pro3.
> Probably left out an option somewhere but it was easier to the the
> AC3 encoder that came with DVDSP3 than puzzle thru ffmpeg ;)
>
Got this. I'll have a read and see if I can make heads or tails of it. Thanx
for the pointer.
> > >From what I've read of the MPlayer man page, I can read these asf files,
> > > but I
> >
> > can't see a switch to convert them to AC3 or other surroud-sound format,
> > which is where I think the mjpeg-tools can come in?
>
> Not really - the only "audio" encoder in mjpegtools is 'mp2enc' which
> is a MPEG-1/Layer-II encoder. MPEG-2 audio does exist and does support
> multi-channel audio but I do not know of any freely available MPEG-2
> audio encoders _and_ I am fairly certain that the MPEG-2 audio
> is not permitted on DVDs.
>
Well, I'm not even sure what format will work with my system. ATM, the DVD is
SCART'd to a switchbox, which has stereo audio outputs which I feed into the
surround-sound stereo system, so I imagine it only plays Dolby encoded
surround-sound as it stands. But I do have the digital optical connector
available on the DVD player and stereo, just not sure what options that would
open for me.
> > Does anyone know how I can convert these files into a format that my DVD
> > will play?
>
> Perhaps 'ffmpeg' can do the job. Perhaps there are M$ tools that
> can be used to convert/dump to .wav files
>
Well, M$ is out of the picture, My box is Pure Linux From Scratch (-;
> I think what you'll need to do is find a way to convert to PCM in a
> .wav file and from there encode to the desired format.
>
I was afraid of that. I suppose I could use MPlayer to convert the asf file
into separate .wav files and then find out how to encode those for playing.
Thanx for the info and pointers. I'll see what I can come up with.
Cheers,
John Gay
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