[MPlayer-users] Problems downmixing to lower number of channels
D Richard Felker III
dalias at aerifal.cx
Mon Oct 18 10:37:03 CEST 2004
On Sun, Oct 17, 2004 at 06:09:40PM -0400, Bryan Donlan wrote:
> I'm trying to play back a 5.1 surround file with my 2-channel
> speakers. I've tried using -channels 2, but that just silences all but
> the front side channels. How can I get it to mix the back, center, and
> subwoofer channels into the front two channels?
it's known to be broken. my solution is the following patch..
rich
Index: libmpcodecs/ad_faad.c
===================================================================
RCS file: /cvsroot/mplayer/main/libmpcodecs/ad_faad.c,v
retrieving revision 1.15
diff -u -r1.15 ad_faad.c
--- libmpcodecs/ad_faad.c 21 Sep 2004 20:34:46 -0000 1.15
+++ libmpcodecs/ad_faad.c 18 Oct 2004 08:24:47 -0000
@@ -71,6 +71,7 @@
/* XXX: FAAD support FLOAT output, how do we handle
* that (FAAD_FMT_FLOAT)? ::atmos
*/
+ faac_conf->downMatrix = 2;
switch(sh->samplesize){
case 1: // 8Bit
mp_msg(MSGT_DECAUDIO,MSGL_WARN,"FAAD: 8Bit samplesize not supported by FAAD, assuming 16Bit!\n");
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