Thanks Selva, Good to hear...but... I finished the encode with said parms and proceeded to mplex the streams together. I let them go until they reached about 40 megs then stopped them to see how the sync was. It sucked, but I used trial and error, and finally -O 2700 seemed to line the audio up real nice with the actor's lips...so I let it mplex the whole movie...
I had it split into 2 parts, telling it 800 for the split point. I checked part two to see if the audio was in sync, and it was off by a lot! Definitely many seconds, perhaps more - so far off, I couldn't tell at first glance! I then viewed the first chunk and the further into the movie I got, the worse the sync was... Is this just a case of NTSC material being problematic and not 100% reliable, or is there some way I can fix this?? Commands used: video: cat *vob |mpeg2dec -s -o YUV | yuvscaler -M BICUBIC -n n -O SVCD | \ mpeg2enc -a 2 -f 4 -F 1 -p -S 800 -B 192 -I 0 -4 1 -2 1 -o output.m2v audio: mkfifo /tmp/v.vob cat *vob > /tmp/v.vob & mplayer -ao pcm -aofile audio.48.wav -vo null -vc null -hardframedrop \ /tmp/v.vob sox audio.48.wav -r 44100 audio.wav resample toolame -b 192 -p 2 audio.wav audio.mp2 mplex: mplex -f 4 -V -O -2700 -o file_%d.mpg output.m2v audio.mp2 Thanks, Davros On Sun, 2003-03-02 at 02:00, Selva Nair wrote: > On 1 Mar 2003, Davros wrote: > > > Hi Selva, > > > > You've got me worried now! Just when I thought I had a handle on this > > process... > > > > No, my source material is not exactly 24, it's from an ntsc DVD and it's > > 23.9 something - i thought that the target rate to shoot for was 29.9 > > something as well! Aren't these fairly common values? > > If your source is 23.97 it will play back at the correct ntsc > rate of 29.97 with the pulldown tag. So no need to worry. As I worte > earlier you don't need yuvkineco, your source is already at the ntsc > film rate. Just go ahead and encode with -F 1 -p. > > > > > If I need to, how can I skip every thousandth frame or so as you > > suggested?? > > I wrote: > > > > [*] I am assuming that the source is actually 24000:1001 fps. Else > > > you may have to skip 1 frame every 1001 frames to keep the audio in sync. > > 24000:1001 = 23.97.. Framedrop is needed only for true 24fps sources. > > Selva > > > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
