[MPlayer-users] audiodump: -vc dummy versus -vc null

[Rich Felker]

On Wed, Oct 26, 2005 at 11:47:38PM +0900, Joe Friedrichsen wrote:
> A recent post 
> (http://article.gmane.org/gmane.comp.video.mplayer.user/39677) piqued my 
> curiosity about -vc dummy when dumping audio from videos. Incidentally, 
> "dummy" is not listed for $mplayer -vc help.

That's exactly the point. You force it to try a codec name that
doesn't exist, and when it fails, no video decoder will get loaded and
video is fully disabled.

> (1) Why is -vc null recommended over -vc dummy for audio dumping even 
> though -vc dummy is faster?

Because it crashes with many demuxers. Read the thread where it was
changed again -- apparently you missed the whole point of it. :)

> (2) What function does -vc dummy have then?

See above.

Rich