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Atrac3 (.rm) codec on iPod 5G

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dar02:
I am glad that you add support for the Atrac3 format. In my opinion it is the best loss music codec. But it is not working well in Rockbox.

I am using version 3.4 of Rockbox on iPod Video 5.5G and I have following problems:
- Sometimes Rockbox is not playing rm atrac3 files and it's showing "Codec failure" message, but after reboot it's playing it again.
- at the end of every song it's showing the "Codec failure" message and because of this it's adding an extra pause before every track, so it's very annoying.
- Rockbox can't read information about title, artist, etc.. from .RA files
- in some parts of songs I can hear quiet clicks that you can't hear while listening on PC.

For coding I am using Real Converter (GUI) and Helix DNA Producer (CLI)
http://daro.tox.pl/rockbox/real_converter.rar
Its wierd that 320kbps file from DNA Producer (codecFlavor 7) is larger than file from Real Converter (it's using the same codec raac.dll)

   Is it possible to add support for Atrac3 format in .oma container? (standard for Sony SonicStage).
I know that .oma format can contain DRM protection but SonicStage is giving you the option to turn the protection off for music encoding, so I think there should be a chance to support unprotected .oma files.

mtee:
Could you please upload a sample or two that have those issues ?

dar02:
OK

http://daro.tox.pl/rockbox/friend_and_foe.zip

03 - Wet and Rusting.rm 3:33 (8 688 KB)
02 - The Pelican.rm 3:39 (8 933 KB)
including file info about: name, category, genre, artist, album, cd track, year and cover art

I added a bad distortion in the middle of every song because I don't want to upload illegal music.

Encoded by DNA Producer (codecFlavor 7) 320kbps

Usually you can get a codec failure if you are jumping between formats - from atrac3 files to others mp3, ogg and go back to atrac and again.

saratoga:

--- Quote from: dar02 on September 30, 2009, 04:02:59 PM ---OK

http://rapidshare.com/files/287054793/friend_and_foe.zip

03 - Wet and Rusting.rm 3:33 (8 688 KB)
02 - The Pelican.rm 3:39 (8 933 KB)
including file info about: name, category, genre, artist, album, cd track, year and cover art

I added a bad distortion in the middle of every song because I don't want to upload illegal music.

Encoded by DNA Producer (codecFlavor 7) 320kbps

Usually you can get a codec failure if you are jumping between formats - from atrac3 files to others mp3, ogg and go back to atrac and again.

--- End quote ---

FWIW those are not ATRAC3 files.  ATRAC3 cannot be used at such high bitrates.  VLC claims they're actually AAC.  None the less these appear to be valid files and should work in Rockbox and if they don't its probably a bug.

Edit:  Can you describe in more detail how to get an error or artifact using these files?  I've listened to them a few times and haven't heard anything out of place beyond the weird distortion you added. 

mtee:

--- Quote from: dar02 on September 30, 2009, 03:20:31 PM ---.. (it's using the same codec raac.dll) ..

--- End quote ---

That shows I should have read more carefully .. raac is AAC not ATRAC3, and the files are indeed AAC encoded.
On the other hand, I was able to reproduce the bug about "codec failure", so I'll work on it soon.
Just a note, for future bug reports, please use the task tracker ("Bugs" link in the website navigation menu).

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