Hi! I recorded a nature documentary on television. The transport stream is 720x576. Okay, that is a little unusual, normally transport streams are 480x576. Anyway, the source stream is interlaced. Since I want to fit the whole series on DVD I want to shrink it. Until a couple of weeks ago I used to deinterlace and re-encode. Usually with good results.
Now I tried that rule of thumb that keeping it interlaced is usually a good idea. So in order to get the file smaller I went for 352x576. interlaced. The result of the reencoding was bigger than the original 720x576! Well, I know that reencoding may result in bigger files by creating artefacts and considering I have only half the screen size this means the bitrate doubled! Am I doing something really wrong or should I just stop encoding interlaced? Here is my batch file: #! /bin/sh mknod stream.yuv p mknod stream.wav p QUANT=8 INFILE=1.mpg OUTFILE=1out.mpg mplayer -ao pcm -aofile stream.wav -vo yuv4mpeg -vf scale=352:576:1 $INFILE & cat stream.wav | nice mp2enc -s -r 48000 -b 224 -o audio.m2a & cat stream.yuv | nice mpeg2enc -f 8 -q $QUANT -o video.m2v sleep 2 mplex -o $OUTFILE -f 8 audio.m2a video.m2v -- Lehmeier Michael <[EMAIL PROTECTED]> ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
