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How can I decode AAC/ADTS files ripped by a Chrysler MyGig car system?, Was: Need help access AAC files. At my wits end.....
misterconnell
post Jan 23 2012, 07:48
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Ok, I have 5 AAC/ADTS files that I am trying to playback and/or convert.
Here they be:
http://www.northwoodrecords.com/dmdaac/

I have tried every encoder, decoder, player, and trick I can come up with... I am an audio engineer by trade, but I'm more of a studio guy who rarely deals with much outside the realm of wav, aiff, and plain old mp3.

long story short, this is my only remaining copy of these songs, and I am desperate to access them. they were ripped from wave file on cdr directly to and by my car stereo, a chrysler/harman becker "mygig" harddrive car system. I had been listening to these songs for a year in my car just fine, original CD got lost, and I went to the dealer and had the files extracted from my car to a usb drive. now i cant play them, or load them back on my car.

from what i know the car system runs a QNX RTOS, and encodes audio as some form of aac.

Can any experts out there make these work????????
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3mm
post Sep 12 2013, 07:23
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Do you still have access to the Mygig hard drive? You can take it out, install QNX or use live cd, with access to that hard drive (or you can make an image out of it and attach it to a virtual machine) and then look at the files. I'm not sure what that dealers' maintenance mode is, maybe it modifies the files somehow. Or maybe Mygig encrypts the mp3 data when you rip audio cd's. I read that only newer models of Mygig can play aac, so yours is not that.

My point is, you may see perfectly fine mp3's in there. If you do see .aac, then you have two options. First is to contact Mygig and ask them if they can decrypt/reassemble the audio tracks. They might need your hard drive if each one uses different, locally generated keys for encryption. Your second option is to look around the QNX filesystems you see on that disk, and try to find binary that is used to playback files. Or they might use one to decrypt the file and another one to play it back. Obviusly you need to be technically capable when it comes to UNIX type system.

And lastly, see if a thing like lockpick for mybox can have an audio output (I think it does), then play the songs from your car, and connect to output ton something that can record it.

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Posts in this topic
- misterconnell   How can I decode AAC/ADTS files ripped by a Chrysler MyGig car system?   Jan 23 2012, 07:48
- - bug80   I tried to open the first file in foobar2000, VLC ...   Jan 23 2012, 09:41
- - Kohlrabi   The files don't seem to be valid, I wasn't...   Jan 23 2012, 09:45
- - hlloyge   Could they be encrypted? Check the manual of your ...   Jan 23 2012, 11:28
- - misterconnell   The manual doesnt say much about the way it encode...   Jan 25 2012, 21:23
- - Kohlrabi   Try to contact the manufacturer of the stereo rath...   Jan 26 2012, 00:10
- - DVDdoug   QUOTE I could have at least ripped open my stereo ...   Jan 26 2012, 01:58
- - Mix3dmessagez   Honestly you could probably download the songs off...   Jan 28 2012, 19:05
|- - misterconnell   No, when i said 'only copy in existence' i...   Jan 31 2012, 15:27
- - saratoga   I see a ton of stuff about that stereo online. Ha...   Jan 31 2012, 19:04
- - Rotareneg   Stupid question perhaps, but have you tried loadin...   Jan 31 2012, 20:53
- - db1989   QUOTE (misterconnell @ Jan 23 2012, 06:48...   Jan 31 2012, 22:34
- - Kohlrabi   In the end, this all adds up to a cautionary tale ...   Feb 1 2012, 09:56
- - misterconnell   I agree entirely, fact is, I did not terrible valu...   Mar 4 2012, 20:25
|- - .alexander.   Hey, could you upload the files to http://www.nort...   Mar 5 2012, 08:01
|- - misterconnell   QUOTE (.alexander. @ Mar 5 2012, 09:01) H...   May 7 2012, 21:10
- - psycho   I tried everything I could think of... Nothing wor...   May 8 2012, 19:03
- - mixminus1   Hmm...7350 * 6 = 44100 Now I'm curious as to ...   May 8 2012, 19:11
- - .alexander.   first bytes do not correspond to ADTS or MP4. In c...   May 8 2012, 20:25
- - LCtheDJ   My own research on Mygig shows that they play mp3 ...   Aug 6 2012, 21:19
- - 3mm   Do you still have access to the Mygig hard drive? ...   Sep 12 2013, 07:23


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