Hallo > I need to convert some PAL high-quality divx AVIs to SCVD mpeg. I have > a tool chain that works fine for NTSC sources. I use transcode to > convert the divx source to a mjpeg-tools LAV file as follows: > > $ transcode -i foo.avi -y ffmpeg -F mjpeg -V -N 0x1 -f 25,3 -o > foo.lav.avi > > then use mjpeg-tools lav2mpeg script to convert to mpeg: > > $ lav2mpeg -m svcd -o foo-svcd.mpg foo.lav.avi > > I mix the tools this way because I've found it gives the best trade off > for speed/quality/consistency than any of the other combinations I've > tried. > > The same system works fine for PAL, except it gives me a PAL formatted > (480x576 25fps) mpg file. My thought is that since the mjpeg LAV file > is frame oriented, it should be relatively straightforward to encode it > to NTSC standards. But I may be way off base. If you want to convert from PAL <-> NTSC, you have to use the cvs version of the mjpeg tools. There is the yuvfps programm included. It can do frame rate conversions by copying frames. The scaling if the image will be dony by yuvscaler.
> lav2yuv .... | yuvfps -r xx:yy | ... > PS - The lav2mpeg step above is pretty darn slow - it takes upwards of 4 > hours to convert about 25 minutes worth of video on my Athlon 1100. If > that is about par for the course, fine. I just want to make sure I'm > not doing something stupid to make the process slower than it has to be. Hmm, the speed would be normal if you yuse yuvdenoise. If you have a hivg quality AVI you do not need to denoise. That will speed up the things. If you use yuvfps you cannot use the script anyways. auf hoffentlich bald, Berni the Chaos of Woodquarter Email: [EMAIL PROTECTED] [EMAIL PROTECTED] www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------- This SF.NET email is sponsored by: Order your Holiday Geek Presents Now! Green Lasers, Hip Geek T-Shirts, Remote Control Tanks, Caffeinated Soap, MP3 Players, XBox Games, Flying Saucers, WebCams, Smart Putty. T H I N K G E E K . C O M http://www.thinkgeek.com/sf/ _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
