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

[Claudio Freire]

Glad you managed to solve it, but:

On Sat, Jun 2, 2012 at 5:34 AM, kurdy_ch-forum at yahoo.fr <
kurdy_ch-forum at yahoo.fr> wrote:

> As flac is lossless the number of frame and md5 code of the track should
> be the same.
>

That's false. MD5 processes bytes, not samples, and as gzip can represent
the same text in multiple way, with different MD5 each time, the same
happens with other lossless codec.

Lossless != stable. PCM is both lossless *and* stable, so that's why you
ought to compare PCM only.
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