tím, že avi přejmenuješ na wmv, tím neuděláš wmv.

General
Complete name : F:\tmp\stahovani\prvni.wmv
Format : AVI
Format/Info : Audio Video Interleave
File size : 4.83 MiB
Duration : 34s 522ms
Overall bit rate : 1 174 Kbps

Video
ID : 0
Format : M-JPEG
Codec ID : MJPG
Duration : 34s 467ms
Bit rate : 1 044 Kbps
Width : 320 pixels
Height : 240 pixels
Display aspect ratio : 4:3
Frame rate : 15.000 fps
Resolution : 8 bits
Bits/(Pixel*Frame) : 0.907
Stream size : 4.29 MiB (89%)

Audio
Format : PCM
Format profile : Float
Format settings, Endianness : Float
Codec ID : 3
Codec ID/Hint : IEEE
Duration : 34s 522ms
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 1 channel
Sampling rate : 7 840 Hz
Resolution : 16 bits
Stream size : 529 KiB (11%)
Interleave, duration : 331 ms (4.97 video frames)
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takže znova:
avidemux
video: xvid
audio: mp3
kontejner: avi
uložit a nacpat to do wmm. mimochodem win live movie maker mi video vezme.
Bits/(Pixel*Frame) : 0.907 - no je to "kvalitní" video- natáčej to v rozumné kvalitě.