[MPlayer-users] latm re-initing sound doesn't downmix when channel conf changes

[Carl Eugen Hoyos]

Andy Furniss <andyqos <at> ukfsn.org> writes:

> > Isn't this expected behaviour or do I misunderstand?
> 
> No - I expect that mplayer will by default downmix 5.1 
> to 2 (or request 2 channels from dec).

Afaict the issue is only reproducible with decoders that 
do *not* support request_channels (like aac 
and latm).

> > Ie: If you cut the stereo part away from your sample
> > and play the remaining 5.1 file with "mplayer file",
> > does the output sound different from playing your
> > original sample (including the channel number change)
> > after the switch to 5.1 ?
> 
> Snipping 100k from the start behaves "correctly" - 
> mplayer downmixes

You are right, I can reproduce your issue (with aac and 
latm).

Carl Eugen