Re: [Alsa-user] SP/DIF AC3 output from stereo source?

[Philipp T. <Phi...@gm...>]

Hi!

Thus spake Lee Revell on 27.01.2006 23:29:
> It seems that some Windows drivers have an option, when a stereo source
> is played back, to encode it on the fly to AC3.

Indeed.
But it's more than that. Even if I generate output on the other
channels (i.e. with mplayer's channel mapping), the amp still only
sees 2.0 channels.
To my knowledge that is because sp/dif bandwidth is too low for more
that 2 channels unless they are compressed into an AC3 stream first.
So the only way to actually _get_ all the channels my hardware can
generate to my amp seems to be encoding the whole bunch into an AC3
stream in real time.

Regards,

	Phil