[FFmpeg-user] Dolby pro logic encoding/decoding.

[dE .]

I've an SPDIF output but without Dolby live, i.e. it can't send 
multchannel audio to the my Dolby pro logic IIx capable amplifier.

Thus I was wondering about encoding 5.1 (or higher) audio streams to 
Dolby pro logic II and then passing the uncompressed stereo (but pro 
logic II encoded) to the receiver in order to get 5.1 surround.

I was also wondering if the opposite was possible, i.e. decoding pro 
logic II encoded streams (over analog or digital mediums) to surround.