Divx 4.12 in VirtualDub & Ulead media studio 6.0

[Ryo94]

1-
VirtualDub (Divx4.12+Mpeg Layer-3)
Lenght: 25:00
Total Frames: 37.500
Aspect Ratio: 320X240
Video Compression: Divx 4.12/1500fps
Audio Compression: Mpeg Layer-3 44.100 khz 96kbps
Final video size: 252.6 Mb
Final audio size: 18.1 Mb
Final movie size: 270.7 Mb
Render Time: 15m 24s


2-
VirtualDub (Divx4.12+Microsoft ADPCM)

Lenght: 25:00
Total Frames: 37.500
Aspect Ratio: 320X240
Video Compression: Divx 4.12/1500fps
Audio Compression: Microsoft ADPCM 44.100 khz 43kbps
Final video size: 252.6 Mb
Final audio size: 64.1 Mb
Final movie size: 316.7 Mb
Render Time: 16m 08s


3-
Ulead Video Editor 6.0 -ulead media studio pro 6.0- (Divx4.12+Microsoft ADPCM)
Lenght: 25:00
Total Frames: 37.500
Aspect Ratio: 320X240
Video Compression: Divx 4.12/1500fps
Audio Compression: Microsoft ADPCM 44.100 khz 43kbps
Final video size: 212.5 Mb
Final audio size: 64.1 Mb
Final movie size: 276.6 Mb
Render Time: 26m 41s


*Someone can explain to me why the incredible difference (40.1Mb) between the size of the videos 2 & 3 (VirtualDub & Ulead video editor) if are using the same codec at same bitrate? The quality of the videos is exactly equally.

[Enchanter]

It's most probably in the way each software handles the encoding jobs differently. There will be differences in this video results, though it's so subtle that the eyes are probably unable to pick a difference. Or perhaps you've not the eyes for it.

[Ryo94]

Yes can be this, and I'm almost blind to but I take a picture of the first frame of this two videos with the file player of the ATI MMC and can't find to much difference or say that one picture is better than other, and supposing that there is differences, this differences could explain 40mb?