interesting. thanks very much for the tips. I shall give them a try. best,
Ted On Nov 10, 2007 11:33 AM, Ben Blout <[EMAIL PROTECTED]> wrote: > >Date: Sat, 10 Nov 2007 11:14:11 -0600 > >From: "ted morris" <[EMAIL PROTECTED]> > > > >Another question has to do with funky timing when I try and utilize > > > >-f $FRAMERATE setting. > > > >I capture from /dev/video0 BTTV card. encode with ffmpeg xvid and > >save as avi. > > > >If FRAMERATE is for example 15 fps or 10 fps, it captures OK but it plays > >back at double or triple speed, or even greater for bursts of time. This > is > >true > >whether playback is with VLC, mplayer, ms mediaplayer, vdub, etc.... > >here are the settings thus far: > > > >transcode -x v4l2,null -M 2 -i /dev/video0 -y ffmpeg,null -R 0 -F mpeg4 > -c > >10:00 -g 720x480 -f 10 -u 100 > >-Q 3 -w 1500-o "$VIDEOLOCATION$FILENAME" > > I am not the most expert user around here, but it sounds like you might > want to try setting the output framerate using the --export_fps. > > If you want the same export framerate as the input framerate, this may > fix the problem. To verify the input and export framerates, you can try > tcprobe -i FILENAME > > If your export framerate is not the same as the input, I think you need > to use either > -J fps > or > -J modfps > > I don't know which is the 'better' to use, I've had good luck with the > modfps filter. > > -Ben > >
