On Wed, 29 Jun 2005, Dave Chapman wrote: > [EMAIL PROTECTED] wrote: > > Hallo, > > > > I think there has to be a bug in the mplex tool with lpcm. That is what I > > have > > done: > > > > 1. sox NAME.wav -t raw -x -s -w -c2 -r48000 NAME.lpcm > > 2. mplex -S 0 -f 8 -V -o NAME.mpg NAME.lpcm NAME.m2v > > It make no different if I also use "-L 48000:2:16" > > 3. Try to play this file with mplayer and xine. Video is OK, but Sound > > make just a noise. > > If you compare the bytes in NAME.wav and NAME.lpcm, are they > byte-swapped? (They should be). If not, then you should remove the -x > option to sox. No the bytes are not swapped. The "-x" option swaps the bytes only if it is nessasary. So you get the same NAME.lpcm file without the "-x". I started my test with just cutting of the wav header with dd and the NAME.lpcm was even then the same.
Yesterday I wrote a script to get the hex data after "00 00 01 BD". Is the information on http://dvd.sourceforge.net/dvdinfo/lpcm.html correct? Do I need only the first 6 Bytes after "00 00 01 BD" to see the differences or are there any other header information for LPCM? I also need a fast hexeditor to play a little with the header information. Any good sugestions? Maybe I can post the results of the test above even today. Am I the only one with this problem? > What exactly is the noise you are hearing? Is it constant noise, or > does it fade in and out? It sounds exactly the same as if you burn a audio cd with audio bytes swapped. I can put a sample on a webserver if this helps. Greatings Oliver ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
