Kyungjoon Lee wrote:
> Hi.
>
> AFAIK, compressed output is generally determined solely by input.
> (Exception: Ogg Vorbis files have random serial numbers which can
> result in different compressed output with identical input material,
> but if you force all encodes to have the same serial number, then
> identical input results in identical output.)
>
I've thought that, too. =)
> I don't think FLAC encoding uses serial numbers, so if you're using
> one encoder to encode identical files, you should get identical
> results.
Yes that was the problem,.. the help of flac (flac -H) in version 1.1.2
says:
--serial-number Serial number to use for the FLAC
stream. When
encoding and no serial number is given, flac
uses '0'. When decoding and no number is
given, flac uses the serial number of the
first
page.
Which is obviously wrong,.. as the encoder seems to use random numbers.
If I specify the number to a fixed value (the starting number) the files
are equal.
I'll file a bug report.
Thanks,
Chris.
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