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Topic: FLAC Compression (Read 4863 times) previous topic - next topic
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FLAC Compression

Hi,

I am new to compression with Flac.
I have applied these compression settings:

-8 -V -T "artist=%a" -T "title=%t" -T "album=%g" -T "date=%y" -T "tracknumber=%n" -T "genre=%m" -T comment="%e" -T "comment=EAC (Secure Mode)" %s

I tried to compress a couple of wav files:

wav -> 92 MB
Flac -> 63 MB

wav -> 75 MB
Flac -> 54 MB

Is this the max compression I can get?

If yes, is there any other lossless format which has a higher compressor rate?

Thanks
Alex
AOPEN AX34, PIII 1.0 GHz, 1GB RAM, Maxtor 40GB, WD 120 GB, Plextor 16/10/40A & PX-716A, HIS 9600 256Mb, 2xMonitor Philips 109P20, Canon i865, W2K, WXP

FLAC Compression

Reply #1
Many codecs compress better than FLAC - FLAC is geared more toward fast decoding.

If your goal is purely compression ratio then I would suggest Monkey's Audio, LA or OptimFROG.

Check the wiki comparison.
I'm on a horse.

FLAC Compression

Reply #2
Quote
Many codecs compress better than FLAC - FLAC is geared more toward fast decoding.

If your goal is purely compression ratio then I would suggest Monkey's Audio, LA or OptimFROG.

Check the wiki comparison.
[a href="index.php?act=findpost&pid=337674"][{POST_SNAPBACK}][/a]


Hi,

In Wiki it looks like Flac has a higher compression comparing to Monkey's Audio, 58,70 vs 55,70 

Yes, I'm looking for compression.

Thanks
Alex
AOPEN AX34, PIII 1.0 GHz, 1GB RAM, Maxtor 40GB, WD 120 GB, Plextor 16/10/40A & PX-716A, HIS 9600 256Mb, 2xMonitor Philips 109P20, Canon i865, W2K, WXP

FLAC Compression

Reply #3
Quote
In Wiki it looks like Flac has a higher compression comparing to Monkey's Audio, 58,70 vs 55,70   [a href="index.php?act=findpost&pid=337675"][{POST_SNAPBACK}][/a]


In the comparison, 100% is zero compression. Therefore, the lower the percentage, the better the compression.

FLAC Compression

Reply #4
Quote
Hi,

In Wiki it looks like Flac has a higher compression comparing to Monkey's Audio, 58,70 vs 55,70  :blink:

Yes, I'm looking for compression.

Thanks
Alex
[{POST_SNAPBACK}][/a]


You will want to read that the other way, where the percentage is the average size of the compressed file versus the original. With the numbers quoted, that gives Monkey's a 3% advantage.

The best compression I have had with FLAC was with this set of discs:
[a href="http://www.amazon.com/gp/product/customer-reviews/B00005O13O/104-2949821-4630339?_encoding=UTF8]http://www.amazon.com/gp/product/customer-...?_encoding=UTF8[/url]

FLAC Compression

Reply #5
Quote
Quote
In Wiki it looks like Flac has a higher compression comparing to Monkey's Audio, 58,70 vs 55,70   [a href="index.php?act=findpost&pid=337675"][{POST_SNAPBACK}][/a]


In the comparison, 100% is zero compression. Therefore, the lower the percentage, the better the compression.
[a href="index.php?act=findpost&pid=337677"][{POST_SNAPBACK}][/a]



OK, I sse what you mean.

Many thanks

Alex
AOPEN AX34, PIII 1.0 GHz, 1GB RAM, Maxtor 40GB, WD 120 GB, Plextor 16/10/40A & PX-716A, HIS 9600 256Mb, 2xMonitor Philips 109P20, Canon i865, W2K, WXP

FLAC Compression

Reply #6
See this small benchmark for a nice comparison of various lossless codecs. I've just started ripping my CD collection and I use WavPack. It's MUCH faster when encoding than FLAC, and compresses a little better most of the time.
Other parameters can be considered though.

 

FLAC Compression

Reply #7
Quote
I am new to compression with Flac.
I have applied these compression settings:

-8 -V -T "artist=%a" -T "title=%t" -T "album=%g" -T "date=%y" -T "tracknumber=%n" -T "genre=%m" -T comment="%e" -T "comment=EAC (Secure Mode)" %s

I would recommend this command line for FLAC :

-T "artist=%a" -T "title=%t" -T "album=%g" -T "date=%y" -T "tracknumber=%n" -T "genre=%m" %s

This command line uses FLAC's default compression level(-5). Using -8 will take about 4 times longer to encode and only give a neglible gain in compression ratio... Also i have never used -V(verify), because no FLAC version gets released without having completed a comprehensive test suite of several thousand streams, which gets through a encode-decode-verify process and must pass on several different platforms, and also because the only known reason for verify errors currently, has been because of bad hardware...

-Martin.

FLAC Compression

Reply #8
Quote
Also i have never used -V(verify), because no FLAC version gets released without having completed a comprehensive test suite of several thousand streams, which gets through a encode-decode-verify process and must pass on several different platforms, and also because the only known reason for verify errors currently, has been because of bad hardware...

-Martin.
[a href="index.php?act=findpost&pid=337727"][{POST_SNAPBACK}][/a]

Yeah, but if you (unknowingly) happen to have this bad hardware, -V comes in useful
Proverb for Paranoids: "If they can get you asking the wrong questions, they don't have to worry about answers."
-T. Pynchon (Gravity's Rainbow)