[puntloos]

*snip*
Simple AC3 is mixed incorrectly. I'm hearing the rear surround channel in the front speakers.
*snip*

Code:

02:25:49 T:140424062732032    INFO: ==[Downmix Matrix]==
02:25:49 T:140424062732032    INFO: FL = FL(1) SL(0.707107)
02:25:49 T:140424062732032    INFO: FR = FR(1) SR(0.707107)
02:25:49 T:140424062732032    INFO: BL = SL(0.707107)
02:25:49 T:140424062732032    INFO: BR = SR(0.707107)
02:25:49 T:140424062732032    INFO: FC = FC(1)
02:25:49 T:140424062732032    INFO: LFE = LFE(1)
02:25:49 T:140424062732032    INFO: ====================

Actually, I think I see a problem earlier in the chain:

Code:

02:25:49 T:140423519516416    INFO: ffmpeg[E5FFB700]:     Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), s16, 448 kb/s

Note the "5.1(side)"

I've been looking around the ffmpeg forums what 'side' means, but I can't seem to find anything conclusive. On one hand just interpreting the word 'side' it might mean side speakers (as opposed to fronts or rears) but given that AC3 is max 6 channel it doesn't seem sensible to think this is true here.

Fact is that when bitstreaming the file, my receiver sends the 'rear channels' to the rear speakers

Perhaps AE is treating 'side' as a hint to send the sound inbetween fronts and rears, but in this case, I would say it is not the intended situation with this specific type of files.