[MPlayer-users] AC3 - Strange error during channel conversion?

[Nelson Batalha]

Thank you Giacomo!

I did try that, but didn't wanted to fill up the email (i tryed everything!)

But as you can see in the end of my email my DVD appears to be fine with 5.1 
channels going to 6 alsa channels, but the error is the same -> one muted 
speaker (which works fine with uncompressed wav). (but the file appears to 
be 5.1 in Windows) The same happens with xine, maybe it's liba52?

>[DTS] has been fixed recently. Use a recent svn snapshot and dts files will
>play with 6 channels.

Cool, I'll try it asap.


>From: Giacomo Comes <comes at naic.edu>
>Reply-To: "MPlayer usage questions, feature requests,  bug reports" 
><mplayer-users at mplayerhq.hu>
>To: "MPlayer usage questions, feature requests,  bug reports" 
><mplayer-users at mplayerhq.hu>
>Subject: Re: [MPlayer-users] AC3 - Strange error during channel conversion?
>Date: Sun, 25 Feb 2007 20:26:03 -0400
>
>On Sun, Feb 25, 2007 at 11:41:15PM +0000, Nelson Batalha wrote:
> > Hi,
> >
> > I'm having some problems with some compressed files, I know very little 
>of
> > this area but I did some research and found nothing like this:
> >
> > I don't have a surround51 device made by alsa, so I'm using mplayer with 
>6
> > channels in my default device, which works fine for uncompressed wav's 
>with
> > 6 channels. However if I try to open compressed files in AC3 I get
> >
> > 
>==========================================================================
> > (...): [liba52] AC3 decoding with liba52
> > Using SSE optimized IMDCT transform
> > AC3: 5.0 (3f+2r)  48000 Hz  448.0 kbit/s
> > Unimplemented resampler for mode 0x7 -> 6 channels conversion - Contact
> > MPlayer developers!
> > Using MMX optimized resampler
> > AUDIO: 48000 Hz, 5 ch, s16le, 448.0 kbit/11.67% (ratio: 56000->480000)
> > Selected audio codec: [a52] afm: liba52 (AC3-liba52)
> > 
>==========================================================================
> > alsa-init: 5 channels are not supported
> > alsa-init: using device default
> > alsa: 48000 Hz/5 channels/10 bpf/40960 bytes buffer/Signed 16 bit Little
> > Endian
> > AO: [alsa] 48000Hz 5ch s16le (2 bytes per sample)
> > ...
> >
> >
> > I have sound in my front channels, rear right and subwoofer. My rear 
>left
> > speaker stayes muted. Anyone knows what's happening? (maybe that speaker
> > sound is going to the subwoofer, but then where's the subwoofer sound?)
> >
> > I know the file is 5.1 but this reports 5.0.
>
>The ac3 file you are playing has 5 channels not 6. If you use -channels 5
>it should play correctly.
>
> > DTS 5.1 files only play in stereo.
>
>This has been fixed recently. Use a recent svn snapshot and dts files will
>play with 6 channels.
>
>Ciao
>Giacomo
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