Re: pcm movie sound problem solved
I had a DVD9 movie that ripped with dvdrip giving 11 titles with various different chapters under the titles. Title 3,4,5 were pcm and the others were ac3. Is this a bug or the people that made the movie are hackers? Well, I am doing each Title(001,002,003, etc...) individually and I am going to put them in a dvdauthor.xml file as individual *.mpg files so the movie plays without any menu or chapters using a shrink factor of 2.4 because my initial cat *.vob>vob and soundtrack length gave me this value, but inevitably I will probably have to use Nautilus to add all the sizes over and over to get it all to fit with bigger shrink factors. The %d trick will reexpand into mpg files, but you have to reorder them by playing each one with mplayer to get the right order for the dvdauthor.xml file so I am going to try just listing each shrunk and mplexed mpg from each title to skip the confusion. Here is the pcm trick:
tcextract -i movie.vob -t vob -x mpeg2 > movie.m2v
mplayer -quiet -vo null -vc dummy -ao pcm -hardframedrop -aofile movie.lpcm movie.vob
ffmpeg -i movie.lpcm -acodec ac3 -ac 2 -ab 192 movie..ac3
tcrequant -i movie.m2v -o shrinked.m2v -f 1.5
mplex -f 8 -o final.mpg shrinked.m2v movie.ac3
Now it plays with mplayer. Initially I got pcm files that were supposed to be wav? and I could play them with mplayer, but mplex would not sync the video with the sound so I converted back to ac3. I new I was going to figure this out because I was initially byte-swapping with transcode -d and still got hiss like I did when I first posted and did not byte-swap; however, I was able to make pcm files that I could hear with mplayer and still got only a scratch(actual audio sound)...silence...scratch(actual audio sound)...silence...scratch(actual audio sound)...silence sound after multiplexing them which was also another thing that happened on my first pcm audio dvd burn attempt.
SYS3175 Converting a DivX to a DVD using Linux(solved my problem)
Doom9's Forum - Audio FAQ: Dolby Digital/AC3 FAQ by KpeX
LinuxQuestions.org: DVD9 to DVD5 Guide by Steel_J
Bloggy Sat, Dec18 2004 Digital Video to DVD encoding under Linux
Transcode: Search for: pcm
Re: (clug-talk) Converting MPEGS
[transcode-users] Re: PCM audio problem
VideoDVD Backup -SlugBug
DVDAuthor documentation for dvdauthor.xml file for one chapter, two sources
I used the following to burn a list of shrunk mpg files taken from SlugBug:
dvdauthor -o /some*other*outputdir/ -x /path/to/xmlfile -T
growisofs -speed=4 -Z /dev/dvd -V TITLE_VOLUME -dvd-video /some*other*outputdir/
I used mpg files instead of vob files.
Last edited by kmberry; 04-24-2005 at 07:47 PM.