[Libav-user] ALAC codec I am not sure it's really lossless

[kurdy]

Hi,
As flac is lossless the number of frame and md5 code of the track should be
the same. But I did the test you propose I extract from the flac the wav and
I launch:

avconv -i file.wav -acodec alac file.m4a 

and surprised I got an Apple lossless audio 

Conclusion with command  

avconv -i file.flac -acodec alac file.m4a   you get an acc  a lossy
compressed file which is not what I was expecting.

For me this a bug and many people use avconv or ffmpeg to create Apple
lossless from flac but have acc 128 !!!!

   

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