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Cozmec
30th January 2010, 14:08
I have some mp4 movies with AAC 5.1 audio.

My player does not support aac decoding though (WD TV LIVE)
so I have extracted the mp4 AAC (5.1) audio track and I want to convert it to AC3 (5.1) and remux it again with the video. Is there an easy way? I haven't found anything yet. Is there another way I can get it to play in my player?

user822
30th January 2010, 14:52
the Software eac3to (http://www.videohelp.com/tools/eac3to) can do so

its a commandline tool:
eac3to.exe input.aac output.ac3

the problem with 5.1 aac is known in the Internet, only working solution up to now seems to be your way with ac3!

Cozmec
30th January 2010, 15:32
Thanks a lot for the fast response!

The problem is my track is in ".mp4" Will there be a problem?

And will i have the channel mix up I've read somewhere (Like Left being center and center being suround right etc.)

Guest
30th January 2010, 15:47
I have some mp4 movies with AAC 5.1 audio. Where did you get those movies?

Cozmec
30th January 2010, 16:24
Where did you get those movies?

From a friend. Does this matter in any way? They are not pirated if that's what you ask.

Cozmec
30th January 2010, 16:59
AAC to AC3

- Foobar2000

- BeHappy-AviSynth

- Command line:
faad -w -b 24 input.aac | aften -readtoeof 1 -pad 0 -b 640 - output.ac3
or
neroAacDec -if input.mp4 -of - | aften -readtoeof 1 -pad 0 -b 640 - output.ac3


I ve tried BeHappy but I lost myself. What exactly is the option to convert 5.1 AAC to 5.1 AC3

And by command line. Do you mean eac3to??

Guest
30th January 2010, 18:10
From a friend. Does this matter in any way? They are not pirated if that's what you ask. Yes, it matters. Thread closed for rule 6 violation.