[MPlayer-users] down-mix to stereo
zongyao.qu at gmail.com
Fri Sep 24 08:36:11 CEST 2010
Clément Bœsch <ubitux <at> gmail.com> writes:
> I may not use the correct vocabulary, but as I understand it, some codecs
> "natively" implements the downmix, but not all of them. So my patch
> manually adds a downmix audio filter for those who don't have it (for
> example Flac).
Thank you for the reply.
I may not make myself clear. Sorry for my lame English.
I am not worried about the down-mix feature inside the decoder, since I
won't use them at all.
I will use the pan filter to mix the channels to stereo myself.
But the definition of the channel map are different in different standard.
5.1 WAV FL , FR , FC , LFE, SL , SR
5.1 AC3 FL , FC , FR , SL , SR , LFE
5.1 DTS FC , FL , FR , SL , SR , LFE
5.1 AAC FC , FL , FR , SL , SR , LFE
5.1 AIFF FL , SL , FC , FR , SR , LFE
5.1 FLAC FL , FR , FC , LFE, SL , SR
I am curious that whether mplayer will first re-map the all of
those channels to one unified layout, then pass it to the filter chain?
or it will hold the original layout?
if the answer is "re-map",
then where to find the "unified layout".
Thank you very much.
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