why do you think they are written by libavformat ?
i see:
"C:\PROGRAM FILES\ASUS\ASUS LIVE\ASUSLIVE.EXE -AVICAP32- ASUS Video
Capture Driver, Version: 3.8.2.2"
in asv2_320x240_3.avi
Regarding asv1/asv2, they do use 48 in biSize, but since there is no
official documentation for these codecs that explicitly mentions that
biSize should be 48 (which breaks the specs), it's plain wrong to use
anything else than 40.
Mats
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