[Ffmpeg-devel] RFC : alac cleanning

matthieu castet castet.matthieu
Sat May 27 19:23:13 CEST 2006


Mike Melanson wrote:
> Mike Melanson wrote:
> 
>> matthieu castet wrote:
>>
>>> PS : does anybody with a quicktime decoder check if the decompressed 
>>> data are identical ?
>>
>>
>>
>> I'm pretty sure that iTunes can compress to ALAC which should 
>> facilitate bitwise data comparison.
> 
> 
> I just remembered that we have a great collection of samples here:
> 
>   http://mplayerhq.hu/MPlayer/samples/A-codecs/lossless/
> 
> luckynight.wav.bz2 is the original audio data ripped from a CD. It was 
> compressed with each of the known lossless algorithms (except MLP; no 
> public encoder). Thus, if you decode luckynight.m4a to a WAV file it 
> should be the same as the original, header cruft nonwithstanding.
> 
>     Hope this helps...
Thanks,
it seems the last frame is broken : the begining is garbage and the end 
is missing.


PS : flac decoder don't decode the last frame




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