How do you separate video and audio from and ogm file format?

[kastro68]

The only possible problem with ogm may be compatibility and editing issues. To me ogg vorbis audio does sound good but I still use mp3 for compatibility and convenience.

I joined an xvid video with ogg vorbis audio using graphedit and it works nicely...HOWEVER, I am having trouble separating the video and audio now. Does anyone know how I can do this using graph edit. With standard avi files it is easy to separate the video from audio using Vdub.

Thx

[atracus]

Hi,
I could separate audio from an ogm through the following sequence of filters in Graphedit (all are DSF):

1. File Source (Async.) - this is where you select your .ogm
2. Ogg Splitter
[now join (1.) Output Pin to (2.) In Pin]
3. Ogg Multiplexer
[now join (2.) Video 0 Pin to (3.) Stream 0 Pin]
4. File Writer
[now join (3.) Ogg Stream Pin to (4.) In Pin]

The outfile was 1 byte longer (out of ab.70Megs) than the "original" .ogg, BUT it worked nicely (time-length is ok).

Anyway, I couldn't manage to split out Video using this method: the outfile is playable by BSPlay and WMP, contains no audio, but VDub refuses to open it; I also tried to change its fourCC codes to the right ones (divx and DX50 in my case), but NO WAY.

Should anyone find how to help out, thanks in advance!

[celtic_druid]

http://members.optushome.com.au/spamcatcher/graph.gif
This will give you a PCM wave file and a video only AVI file. You will probably find that you have to rederive the key frames though.

[kastro68]

Thx

[Acaila]

No need to rederive the keyframes. Just check "full interleaving" in the avi mux filter before you demux the video and you should end up with a perfectly valid video stream.