Log in

View Full Version : Is it possible to convert WMV9 content from a .WMV file to .AVI?


systemloc
22nd September 2007, 22:17
I understand that the WMV9 VCM codec allows the use of WMV9 encoded content in the .avi file format. Is it possible to then convert a .wmv file containing WMV9 content to an avi file without re-encoding the content? I have tried this, but it does not seem to work. I don't see why not, though, since the WMV9 VCM codec should decode the media; or is there some incompatibility between the DMO and VCM versions of the codec?

Currently, I have tried using ASFtools to convert the wmv to avi. WMP11 won't play the resulting avi, though. It downloads the WMV9 VCM codec (even though I already installed it!!), and then refuses to play it. Media Player Classic will play the audio of the resultant avi, but not the video. Vdubmod chokes on the avi with an error as to the files structure.

Any suggestions?
Thanks in advance. :)

Inventive Software
22nd September 2007, 22:57
Provided the content is Simple or Main (without B-frames) compatible, then it's compatible with the WMV9 VCM codec, and it *should* be possible. Try using Graphedit. :)

foxyshadis
23rd September 2007, 00:09
If it's complex profile, you're pretty much hosed, I think you have to go back to a system with WMP10. Bond was looking into that a while back, he might know more.

Of course, they could just be corrupt/damaged.

joseph5
25th September 2007, 02:47
Did you try VirtualDubMPEG2?

zambelli
30th September 2007, 03:56
If the ASF has a constant framerate, then I think it should be quite possible. But note than in order to decode the AVI in a VfW app you will need a VCM codecs - and only WMV9 Simple/Main profiles can be decoded with Microsoft's WMV9 VCM.