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) TIA > > Below is my commandline. > With the "-A" option ommitted from it, transcode proceeds and finishes (save > for the glibc problem addressed earlier, as well as a couple of other issues > like wrong aspect, which i'll address in a separate post) > > > pass 1 : nice --19 transcode -H 10 -a 0 -c 0:00:00-0:1:30.8 -x vob \ > -i /data/stuff/myvob/vob/001 -w 3810,50 -F mpeg4 \ > -A -s 1.198 --a52_drc_off \ > -N 0x2000 \ > -E 48000,0,0 \ > -Y 64,8,64,8 \ > -M 2 -R 1 -y ffmpeg,null -o /dev/null \ > --export_fps 29.97 \ > --print_status 25 --avi_limit 9999 > > pass 2 : nice --19 transcode -H 10 -a 0 -c 0:00:00-0:1:30.8 -x vob \ > -i /data/stuff/myvob/vob/001 -w 3810,50 -F mpeg4 \ > -A -s 1.198 --a52_drc_off \ > -N 0x2000 \ > -E 48000,0,0 \ > -Y 64,8,64,8 \ > -M 2 -R 2 -y ffmpeg -o /data/stuff/myvob/avi/001/myvob-001.avi \ > --export_fps 29.97 \ > --print_status 25 --avi_limit 9999 > --
