[Flac-dev] Re: [Flac-users] Re: Settings to get the best compression

[Miroslav Lichvar]

On Thu, Jun 12, 2003 at 09:04:40AM -0500, David W. Tamkin wrote:
> Josh suggested to Chris:
> 
> >  flac --super-secret-totally-impractical-compression-level
> 
> Now it's not a secret any more!  (OK, to those who can read the code, it 
> never was.)
> 
> >No joke,
> 
> The existence of the option isn't, but its performance pretty much is, 
> as Josh admitted:
> 
> >... but you will soon find out that it is not worth it and will go
> >back to -8.  The -# options are already well tuned for CD audio.
> 
> No kidding.  I asked almost the identical question several months ago, 
> and a member here [whose name I am embarrassed to forget -- first name 
> might have been Miroslav?] suggested pretty much the same options as 
> those to which --super-secret-totally-impractical-compression-level 
> expands (just a different second value for -r). 

I just wanted to keep the secret. :)

> Many of the .wavs did 
> not compress as well as they had at plain old -8.  

I think it is caused by estimating (not very accurate) of rice bits.
This DONT_ESTIMATE_RICE_BITS define in stream_encoder caused problems
when i was playing with bonk residual coding, real results were
poor.

-- 
Miroslav Lichvar