Hallo In the mail where a guy added the patch for mp2enc to create CRC error protection for the audio. He also wrote a formula for estimating how much larger the audio (MPEG1 Layer II) will be: (frame length in bytes) = 144 * (byte rate) / (sample rate)
Someone asked me, how this formula works. Because the values he worte are only correct if you use the byterate in bits/sec and not the bytes/sec: (144 * 224kBit/s * 1024 ) / (44100 Hz) = aprox 748 Bits per audioframe, So that is not really correct because according to the units you will have a result bits/audiframe and not bytes/audiofram. But if you add than the 2 extra bits to the 748, needed for the CRC Error protection and you calculate the difference it is about 0,27% which is the correct value. I think someone wrote a programm for filtering yuv streams from old VCR tapes where you have sometimes a black line in the frame, or very black or white sports in the image. That programm was able to filter that stuff and correct it. Does someone have that programm or knows where to download it ? auf hoffentlich bald, Berni the Chaos of Woodquarter Email: [EMAIL PROTECTED] www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------- This SF.Net email is sponsored by: Oracle 10g Get certified on the hottest thing ever to hit the market... Oracle 10g. Take an Oracle 10g class now, and we'll give you the exam FREE. http://ads.osdn.com/?ad_id=3149&alloc_id=8166&op=click _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
