HE-AAC channel order
2005-12-26 06:08:43
I´ve been having issues compressing with HE-AAC, regarding the channel order for the output file and the software that outputted it. I create the surround mix with Audition, then export it to 6-ch interleaved with the Multichannel encoder. But FAAC and AACEnc32 don´t seem to be able to open it while Nero Digital 7 Encoder does without a problem, wich makes me wonder what kind of header is Audition outputting in the file. Minor glitch, I just open it as RAW PCM with Soft Encode, and save it as 6-ch with the proper order for .WAVs (L-R-C-LFE-SL-SR). This file IS accepted by FAAC and AACEnc32. Anyway... Once the file is "ready" to be encoded, the channels are all messed up: the Left channel is comming out of the center, the lfe out of the sr, and the center out of my armpit... a disaster, sort of speaking. The 1rst ch in the .wav (L) becomes the 3rd ch in the .aac file (and so on...). 2nd --> 1rst 3rd --> 2nd 4th --> 5th 5th --> 6th 6th --> 4th Then: L --> C R --> L C --> R LFE --> SL SL --> SR SR --> LFE Is this the correct order for output for HE-AAC: C-L-R-LFE-SL-SR? AC3, DTS, OGG, and AAC-LC/MAIN/LTP play in the proper order. This forces me to re-order the channels in Soft Encode as I said before. Once i do, the order plays fine. EXCEPT.... when I use Nero Digital, wich completely changes the channel order comparing with AACENC32. For Nero Digital, the channel order in the .wav must be R-C-L-SR-LFE-SL (from Soft Encode). Any thougts, comments?