Demux Wmv Video File

Hello, I was searching on net but I did not find anything about demux wmv files, isn’t like I want just get audio. I want get both separated: audio and video, to change the audio source (to one with higher quality). Any help appreciated.

Thanks,

what is the size, res & bitrate?

Res: 512 x 288
Bitrate: 879 kpbs
Size: 20 MB

Did you try with virtualdub and tmpgenc?

No, I will try and tell you. Thanks