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Old 07 August 2004, 07:24 pm   #7
guruboolez
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Join Date: Aug 2004
Location: Strasbourg (France)
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Problem is not related to the musical length: 30 sec is clearly enough to isolate an artifact in good conditions. But with 2 megs only, there's sometimes a good difference in the total duration between a herculean lossless format and a lighter one than flac. In my opinion, it makes sense to use the strongest compression mode possible for internet distribution: bandwith sparing, time sparing (some people like Frank Klemm are still living with 56K )...
Some people like me could provide a very limited amount of webspace, and that's why I prefer the strongest lossless/multi-OS format available: it makes things easier.

Flac was maybe two years ago the only lossless format working on Linux (I don't know), but nowadays, there are more audio formats working on other system than Windows. There's WavPack, OptimFROG, Monkey's Audio... and all are offering better compression than flac.

EXEMPLE: 18 samples from Roberto's last test:
Code:
                     FLAC     OPTIMFROG   MONKEY   

                                        

Bartok_strings2       750        653        668    

chanchan              905        864        878    

Debussy               402        347        368    

female_speech         480        397        458    

getiton               758        696        706    

Hongroise             575        463        472    

kraftwerk             655        604        618    

Leahy                1041        997       1003    

male_speech           510        408        463    

Mama                  942        888        902    

NewYorkCity          1104       1071       1077    

OrdinaryWorld         954        885        888    

rosemary              786        734        742    

SinceAlways          1002        920        928    

TomsDiner             757        628        655    

trust                 866        823        831    

Twelve               1017        960        970    

Waiting               953        865        878    

                                        

TOTAL SIZE         46012966   42205288   43037796  

AV. BITRATE           807        739        754    
- OptimFROG encoding are ~10% smaller than flac
- on 56K, the full downloading need ~12 additionnal minutes with flac compared to Frog
- two samples (Bartok & Hongroise are > 2.00 MB with flac but are OK with MAC and Frog.


I don't want to start any flame war between lossless encoders, but it seems logical to me to give the favour to a something more economical.
Last but not least, according to Frank Klemm website:

Quote:
support of directly reading OptimFROG lossless by optimfrog compressed PCM files (works under Linux and Windows)
(...)
support of directly reading FLAC lossless compressed PCM files (works under Linux; Windows-FLAC do not work)
Aparently, FROG is more friendly with musepack than flac
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