On Sat, 14 Dec 2002, Laurent Pinchart wrote:
>
> I'm trying to author an SVCD or DVD from an MPEG4 avi file.
> ...
> I thus ended doing something like this:
>
> mkfifo yuvfifo
> transcode -i myavifile -x ffmpeg,null -y yuv4mpeg -z -o yuvfifo &
> cat yuvfifo | yuvscale -O SVCD | mpeg2enc -f 4 [...] -o mympegfile
>
> This seems to work, but is awfully slow (about 1.5fps on a P3 933MHz).
I don't know what kind of speed you'll see on your system, but the script
below works quite nicely on my system. I usually do VCD instead of SVCD,
and that goes a bit faster than realtime for me, so I'd think you'd get
better than 1 fps...
This script takes an AVI as input and produces one or more SVCD files as
output. It presumes NTSC frame rates, and 4:3 aspect ratio, so you might
want to adjust to fit your source material.
----- cut here ---
#! /bin/sh
mkfifo stream.yuv
mplayer -nofs -nosound -vo yuv4mpeg -ni -quiet -benchmark "$1" \
</dev/null &
cat stream.yuv | yuvscaler -O SVCD -v 0 | mpeg2enc -f 4 -F 4 -S 768 \
-B 224 -n n -a 2 -o video.m1v
mplayer -nofs -vo null -hardframedrop -dumpaudio "$1"
mpg123 -w audio.wav stream.dump
rm -f stream.dump
sox -t wav audio.wav -t wav -r 44100 /dev/stdout | toolame -p 2 -b 224 \
/dev/stdin audio.mp2
rm -f audio.wav
mplex -f 4 audio.mp2 video.m1v -o "${1%.avi}%02d.mpg"
--- end script ---
--
Robert Kesterson
[EMAIL PROTECTED]
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