[dvd::rip] dvd shrinking problem

howdy all,

i'm experimenting with schrinking vobs and read through the archives and found many references to do this, however i'm running into video/audio sync issues.

i'm using transcode-0.6.12 and dvdauthor-837(daily snapshot)

this is the commands i'm using(and yes there is no tcrequant just for testing):

tccat -i /dev/dvd -T1,-1 -P | tcextract -t vob -x ac3 -a0 > audio.o
tccat -i /dev/dvd -T1,-1 -P | tcextract -t vob -x mpeg2 > video.o
tcmplex -i video.o -p audio.o -m d -o video.vob
#mplex -f 8 -o video.vob video.o audio.o
dvdauthor -t -a ac3 -o dvd-temp video.vob

when using tcmplex to multiplex i get a warning:

NOTE: mux rate may be too low for data rate, watch for PTS/DTS underflows

in addition when running the dvdauthor command i get repeated warnings that:

Audio pts for channel 0 moves backward ; please remultiplex input

the vob builds , however the audio is out of sync with the video. from some simple test, it appears the amount of out of sync time is consistant from the begin to the end of the vob.

one item i did note is that the video stream is reporting 29.97 fps
during multiplexing however the original vob reports 23.976 using a tcprobe.

so the question is:

am i missing an argument during the multiplexing or is there something i need to add to the extracting process?


thanks
dave


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