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Topic: FLAC, Lossless audio compression.< Next Oldest | Next Newest >
Sir Mustapha Offline




Group: Musicians
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Posted: July 07 2004, 07:28
Go to http://flac.sourceforge.net/ and check that out. It's a LOSSLESS audio compression codec, that has the same purpose of OGG and such. Has anybody heard of this before? Has anybody tried it? Is it worth it? Perhaps we have a lossless alternative to OGG here.

It's a shame I hadn't heard about this before...

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Zanny Offline




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Posted: July 07 2004, 13:16
Ive used it quite a lot and the package you can download from that site included a winamp plugin so nice and compatible with normal pc use.

U get between 2:1 and 3:1 ratios so pretty big filesizes but genuinely loseless.   You can tell the difference between it and even 320kps mp3's even on pc speakers, well i can ;)

To me .ogg is a better sounding alternative to .mp3 but unless Im mistaken still isnt truely lossless unlike FLAC which is truely lossless (like .zip files but playable on pc without having to decompress).
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c_haese Offline




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Posted: July 07 2004, 14:10
Quote (Zanny @ July 07 2004, 13:16)
To me .ogg is a better sounding alternative to .mp3 but unless Im mistaken still isnt truely lossless unlike FLAC which is truely lossless (like .zip files but playable on pc without having to decompress).

You are correct. Ogg Vorbis is not lossless. Ogg Vorbis and MP3 throw away "unimportant" information to achieve smaller file sizes. Ogg Vorbis is smarter than MP3 in deciding what's unimportant, so an Ogg Vorbis file will most likely sound better than an MP3 of the same size.

FLAC on the other hand does not discard any sound information, so a decompressed FLAC will always contain the exact same sound information as the original. (There are apparently cases where some wav-header data is lost, so the result may not be completely bit-identical, but the differences are only in the header. The sound data itself is reproduced bit-by-bit.)
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Q! Offline




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Joined: Dec. 2002
Posted: July 07 2004, 17:10
yes, flac is lossless, no catch. all audio data is preserved. there's quite a lot of lossless compressors around actually. they all have their advantages and disadvanateges. monkey's audio is probably the most popular and has a (slightly) better compression ratio then flac but the official tools are windows-only. wavpack comes with hybrid mode (lossy + correction file = lossless) which might come in handy in some cases. compression/decompression speed may also be important depending on your cpu.

http://members.home.nl/w.speek/comparison.htm

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3 replies since July 07 2004, 07:28 < Next Oldest | Next Newest >

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