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faq [2010/04/07 12:42]
ramson
faq [2010/12/05 23:43] (current)
glaubitz spell fixes and updates
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-**Is there an atrac3plus decoder available for GNU/Linux?**+**Is there an ATRAC3plus decoder available for GNU/Linux or MacOSX?**
  
-No, but work on a decoder has been initiated by the ffmpeg project. There are ffmpeg +No, but work on a decoder has been initiated by the ffmpeg project. This decoder is 
-decoders for atrac1 (atrac-sp) and atrac3.+expected to be released in //mid of 2011// and will certainly also part VideoLAN's VLC. 
 +There are already ffmpeg decoders for ATRAC1 (ATRAC-SP) and ATRAC3. Both types 
 +can also be played back in VideoLAN's VLC.
  
- +**Why can'ffmpeg identify all of my ATRAC1 (ATRAC-SP) tracks that I have uploaded
-**Why cannot ffmpeg identify all of my atrac1 (atrac-sp) tracks that I have uploaded+
 with the netmd python script?** with the netmd python script?**
  
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 The ffmpeg developer is working on this problem - hopefully it will soon be fixed. The ffmpeg developer is working on this problem - hopefully it will soon be fixed.
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- 
- 
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 **Why does development of the software take place at such a slow pace?** **Why does development of the software take place at such a slow pace?**
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 **I tried renaming a track in //qhimdtransfer// but that doesn't work either, what's wrong?** **I tried renaming a track in //qhimdtransfer// but that doesn't work either, what's wrong?**
 +
 +Renaming tracks is a feature which has not been implemented yet, but we have it on the [[Tasks]] list.
  
 **I tried transfering a track to my HiMD walkman in //qhimdtransfer// but it won't work. Why?** **I tried transfering a track to my HiMD walkman in //qhimdtransfer// but it won't work. Why?**
 +
 +This is still in development, like for many other features, please see the [[Tasks]] list.
  
 **Why can I transfer some tracks from my HiMD and some not?** **Why can I transfer some tracks from my HiMD and some not?**
 +
 +Every track on a HiMD is encrypted. While MP3 tracks use a rather simple and obscure encryption (XORing the data with a constant key) which we have fully reverse-engineered, ATRAC3/3+ and PCM recordings are encrypted using 3DES. The mechanism on how the encryption key for 3DES is generated is yet to be understood. However, all recordings made with a MZ-RH1 Walkman use a constant key which we have obtained through reverse-engineering. Therefore, we can upload and decrypt tracks from the MZ-RH1 and know how to download ATRAC3/3+/PCM tracks to an MZ-RH1 (the latter is not implemented yet).
  
 **What is the difference between MP3 and LPCM/ATRAC3/3+ tracks?** **What is the difference between MP3 and LPCM/ATRAC3/3+ tracks?**
faq.1270636948.txt.gz · Last modified: 2010/04/07 12:42 by ramson