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? :)

> 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 ;)

> >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.

> 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

        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.

        Cheers,
        Steven Schultz



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