[vorbis] Compression Artifacts at -q 5. Help!

Sune Foldager cryo at diku.dk
Mon Jun 16 17:35:42 PDT 2003



Greg Wooledge wrote:

> Tyler Knott (vault-responce at charter.net) wrote:
>
>> But wouldn't oggenc encode the exact same file the exact same way with
>> the exact same parameters every time? Couldn't we include a few test
>> files(10 to15 seconds, uncompressed, various sample rates/bits) with
>> some scripts to encode them and them compare the MD5sums to known good
>> copies?  Wouldn't this catch the vast majority of broken oggencs?
>
> There is some permissible error due to floating point rounding.  This
> means the files aren't guaranteed to be bit-for-bit identical between
> platforms, compilers, etc.

But don't all platforms adhere to IEEE? This should indeed give 
bit-for-bit identical calculations.


-- 
Sune.

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