<bluesky <at> caramail.com> writes: > If I play the same file in XBMC only the front > speakers are used.
How is your computer connected to your receiver? I can choose here between analog, hdmi and TOSLINK (optical). If I use hdmi or the optical input, my receiver allows me to switch the "listen mode": As suspected, the audio uses Dolby PLII to encode surround sound via stereo channels. If I select "PLII" on my receiver, I hear the surround sound (with failures because the algorithm cannot be perfect). If I use the analog input, I have to force the receiver to "two-channel" input to make it detect PLII: If I set it to 6-cable input (which is what I normally use), I cannot choose PLII. As said, FFmpeg does not support PLII decoding (only encoding). Are you sure MythTV contains an internal implementation and not does not use your receiver's Dolby decoder? Just to make things less confusing: Above has nothing to do with "mpeg2": You can use any audio codec that supports two channels and use it to store PLII-encoded surround sound. There is also "MPEG-2 5.1" or "MPEG-2 Multichannel". This is very rare and FFmpeg cannot detect it (nor decode it). I don't think your file can use both Dolby PLII and MPEG-2 Multichannel at the same time. Wikipedia articles for Dolby PLII, toslink and MPEG-2 Multichannel exist. Carl Eugen _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
