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Extracting AAC from Matroska H264

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SomeoneElse:
um... if you are going from a mkv to encoding in a seperate mkv, why are you going through the midpoint of extraction and conversion?  

in MKVmergeGUI just drag the files into the input and select the streams you want to keep in the new file... conversely I often use MediaCoder to downgrade Ridiculous BD audio rips into more reasonable files... I reduced the over 600 kbps AAC from one movie I DL'd to 256 kbps (well over average for downloaded content) and reduced the overall movie size from 1.4 gigs to 480 mb... BD rips do have their drawbacks...

johndmes:

--- Quote from: mizore on December 31, 2009, 10:27:27 PM ---File input into Avanti:

Format                           : AAC
Format/Info                      : Advanced Audio Codec
Format version                   : Version 4
Format profile                   : LC
Format settings, SBR             : Yes
Format settings, PS              : No
Muxing mode                      : ADTS
Bit rate mode                    : Variable
Channel(s)                       : 6 channels
Sampling rate                    : 44.1 KHz
Stream size                      : 60.9 MiB (100%)

Avanti error:

Resampling with input channels greater than 2 unsupported.

Can not resample 6 channels @ 22050 Hz to 6 channels @ 44100 Hz


 >:(


I'm not resampling if the input file is 44.1khz and target specification is 44.1khz...?!

--- End quote ---

Forgive me for interjecting, but as a ex-computer technician I think your problem is a incorrect error message.

From the description, it sounds mike the actual error is "Avanti can't interpet 6-channel audio, PERIOD".

Have you tried another remuxer/re-encoder than Avanti -= one that is documented as supporting 6-channel AAC?

Tha'td be the next step I'd take, assuming that the audio was indeed extracted properly.

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