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Join Date: Oct 2004
Posts: 21 Re: VBR audio to CBR?

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Convert non standard audio rates and keep in sync as cbr mp3

Overview:

Vdub doesn’t do this, it will say it is unable to find codec, I use a free program called Super C, and this is the site:

http://www.erightsoft.com/SUPER.html

Original Avi:

717430 kb.avi

video = xvid,640x272 (2.35:1), bit rate = 1139 kbs, 23.97 fps
audio = ac3 (0x2000)dolby, 384 kbs 6ch cbr, 48000 hz

After converted with Super C:

1,091,721 kb.avi

video = xvid, 640x272 (2.35:1), 738 kbs, 23.97 fps
audio = pcm 16, 1536 kbs - stereo, 48000 hz

Super C Setup:

Avi, xvid, wave ( pcm ), mencoder, no change, 23.98 fps, 2016 kbps bit rate, hiqual,stretchit, other opts = CK ON Deinterlace ( this is the default ), 48000 hz, 2 ch, 1536 bit rate, default lang.

You will notice that I leave the values as close as possible to original.

Rh clk Super C and specify the output folder. Drag the original avi file into Super C, it will show as checked. Click on encode and wait long time - hours.

When finished play on Window Media player and it will be in sync, you can demux the pcm wave from the result with vdub. When you mux the fixed pcm audio file back into the avi you can vdub convert it to lame mp3 320 cbr. You can play this avi on Windows Media Player and you will see it is in sync. This xvid will not play on my Phillips 642 so at this point I convert it with vdub to Divx 5.05 or mpeg4 video codec compressor v3 or the codec of your choice. I find these two will keep the quality of the video. The v43 will play on the Phillips 642 DVD player.

doo524