[vlc-devel] Re: transcode - audio down-mix

Gildas Bazin gbazin at netcourrier.com
Sun Oct 12 11:11:55 CEST 2003

On Saturday 11 October 2003 23:49, Boris Dorès wrote:
> On Fri, Oct 10, 2003 at 10:58:31AM (GMT+0100), Simon wrote:
> > I note that transcode.c code is receiving attention lately. While you 
are at
> > it, do you have any plans to give us a down-mix audio transcoding 
> > from more than 2 channels to 2 channels (stereo output). I have a number 
> > DVDs which are 5.1 and I play them on a hardware which only supports 2
> > channels. Some sound effects are on channels other than front left and 
> > and the audio output of these titles is not that great.
>   It may not be the perfect solution for your problem, yet you can still
> try to use the "headphone channel mixer" audio filter. It's intended to
> downmix any source to a stereo output suitable for a headphone, adding a
> virtual spatialization effect, but that effect should be discreet with
> traditionnal speakers.

Unfortunately it is currently impossible to use the existing audio filters 
while transcoding.
This may change in the future though.


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