How to demux WMV?

[mats.hogberg]

Got a wmv file, I'd like to strip the audio out of, for cutting and maybe conversion to mp3 later on. Any pointers on how to? Tools to use?

TIA!
/Mats

[Baldrick]

maybe https://forum.videohelp.com/viewtopic.php?p=1370009#1370009
or doesn't latest virtualdubmpeg2 support wmv? open and save the audio as wav...never tested though.

[dipstick]

You can open the wmv file in Goldwave and save it to the format of your choice, wav mp3, ect. As a last resort, you can play the WMV file and capture the audio using Audacity.

[Cornucopia]

You don't need much besides Windows Media stuff itself...

1. Windows Media Encoder--Comes with Utilities, incl. "Windows Media Stream Editor" allows to strip audio from video as WMA (although it's still in ASF container).
2. Windows Media Player--Open WMA, then "Copy to AudioCD", and rip as normal (EAC, CDRWin, etc).

Scott

>>>>>>>>
edit: obviously, this probably won't work with DRM'd stuff

[mats.hogberg]

Thanks - Why didn't I think of trying GoldWave myself? It seems to be able to get at least a wav out of anything you can play back. Mission accomplished.

/Mats

[yoda313]

or doesn't latest virtualdubmpeg2 support wmv? open and save the audio as wav...never tested though.

I tried virtualdubmod and virtualdubmpeg2 on a homemade wmv (through windows movie maker). No luck. Here's the error message:



Here are the two versions I tested:

virtualdubmod 1.5.10.1 build 2366/release

virtualdubmpeg2 1.5.10 build 18264/release

Looks like something else will have to do for now.

[mats.hogberg]

A little follow-up and summary:
The wmv in question was from the Swedish television (www.svt.se)
I used NetTransport to get the wmv (after several tries and retries that aborted at random points).
First try to encode it to DVD mpg was using AviSynth, but whatever I tried, it ended up with severe drifting (desync) audio: > 6 secs after 25 minutes.
So, I loaded the wmv in WMM, saved as DV AVI and encoded the DV AVI to DVD specs mpg (MainConcept encoder) - and no sync problem at all!
Like stated before, getting the audio out was a piece of cake; just load the wmv in Goldwave and save as wav.

/Mats

[Baldrick]

forgot goldwave also...

yoda: i said LATEST virtualdubmpeg2 releases....1.5.10 build 18264 is 100 years old...

[Schmendrick]

You can also open the WMV-file with graphedit and subsitute the "Default DirectSound Device" by the "PCM"-audio compressor, then add the Direct showfilter "WAV Dest" and "file writer". The insertion of the file writer asks you for a file name and if you have given that and finally play the built graph it produces the requested WAV-file.

[yoda313]

yoda: i said LATEST virtualdubmpeg2 releases....1.5.10 build 18264 is 100 years old...

Sorry I haven't had a need to look for an update since it does everything I need it to do. I'll try to look for an update and give it a go.

EDIT - yes it DOES work with WMV on the latest release. I downloaded build 24600. It opens the wmv no problem.