Need help optomizing steps

[DarkShadow]

I currently use this process to make SVCD's from my tv capture card but would like to know how to get rid of the need for having a stream.yuv file


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mencoder -tv on:driver=v4l:width=480:height=480:input=1:norm=nt sc:amode=1:adevice=/dev/dsp:fps=29.97 -oac copy -o recording.raw.avi -ovc lavc -lavcopts vcodec=huffyuv:keyint=300:vstrict=-1

## edit out commercials and stream copy to recording.avi with avidemux##

mplayer recording.avi -ao pcm -aofile stream.wav -vo null
mplayer recording.avi -vo yuv4mpeg -nosound
mpeg2enc -o video.m2v -f 4 -q 2 -I 1 -V 200 -n n -F 4 -r 32 -4 1 -2 1 -b 2400 stream.yuv --correct-svcd-hds --aspect 2
cat stream.wav | mp2enc -v 2 -b 96 -o sound.mp2
mplex -f 4 sound.mp2 video.m2v -o svcd.mpg
vcdimager -t svcd svcd.mpg

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Any other ways to optomize quality would help including a way to de-interlace the video without reencoding with avidemux

[shadowcat45]

-q 2 ... -b 2400 ???
such a low bitrate with such a high quality setting ... will not work ver well IMHO, you should choose a higher q . It lowers quantization and quality, but makes mpeg2enc spend less bitrate on low motion scenes.

For deinterlacing and denoising, well, you can use the various filters from the mjpegpackage, like yuvdenoise, which is able to de-interlace. Use it via pipe ( yuvdenoise | mpeg2enc ...)

The recent CVS version of mjpegtools contain even some more filters. They will lower the encoding speed, however, especially on single processor machines.