[MPlayer-dev-eng] [PATCH] audio channel remapping

[Reimar Döffinger]

Hello,
On Wed, Nov 08, 2006 at 10:00:47PM -0800, Corey Hickey wrote:
> This patch makes mplayer and mencoder auto-insert the channels filter
> when necessary in order to maintain the proper order. Remapping is
> necessary when reading from or writing to formats that have a different
> native order from what mplayer and mencoder use internally.

I am fine with changing the de/encoders to do the reordering, but I am
against this remapping via filter, it is IMO immensely complex and there
are already without it some bugs in filter chain building (like command
line parameters lost on reinit).
I agree with whoever suggested on ffmpeg-devel that audio should
preferably use a planar format, which each channel in a separate memory
area. Although this will be a major effort, this allows reodering
without any speed loss and for most decoders is closer to their original
output anyway (AFAICT).

Greetings,
Reimar Döffinger