[MPlayer-users] surround filter doesn't seem to work correctly

[Jason Ferrara]

On Jul 2, 2006, at 11:08 AM, Jan Knutar wrote:

> On Sunday 02 July 2006 05:01, Richard Bromley wrote:
>
>> I'm pretty sure this is not the correct behavior for a Dolby  
>> Surround decoder.
>
> I was under the impression that DVDs with surround had it in 6  
> channel AC3?

There are DVDs that just have two channel audio and use Dolby  
Surround or Dolby Pro Logic for the surround sound encoding.

The Akira special edition DVD for example has the english audio track  
in 6 channel AC3, but the japanese track in 2 channel encoded Dolby  
Surround.

>
> Thus, you'd do something like mplayer -channels 6 dvd://?
>
> I thought the -af surround filter was mostly of historic interest  
> for playback
> of surround sound that's encoded into two channels...
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