At Sat, 06 Dec 2003 11:56:24 +0100, Roel Schroeven wrote:
ogg is really just a container format, like AVI. When is commonly referred to as ogg-compression is in fact vorbis-compression. AFAIK Vorbis is the only format currently commonly used within Ogg, but in the end it's supposed to be a container for both audio and video (and metadata).
When you specify --ogg, the flac stream is embedded into an ogg-container. I don't think it's really useful.
Hi.
This kind of subtlety is of great interest to me : do you have any pointer ?
The Vorbis website contains some useful information. In the FAQ (http://www.vorbis.com/faq.psp#names):
"Ogg: Ogg is the name of Xiph.org's container format for audio, video, and metadata.
Vorbis: Vorbis is the name of a specific audio compression scheme that's designed to be contained in Ogg. Note that other formats are capable of being embedded in Ogg such as FLAC and Speex."
Then the flac manpage says
"--ogg When encoding, generate Ogg-FLAC output instead of native-FLAC. Ogg-FLAC streams are FLAC streams wrapped in an Ogg transport layer. The resulting file should have an '.ogg' extension and will still be decodable by flac."
That seems pretty clear to me.
What i'm curious about is the question : In what way all those different sound formats are different (technically speaking, i mean, not "performance") ?
Since FLAC is lossless, it sounds the same as the original. As for the lossy formats, that's very hard to say. I think you can find a nmber of sites who have done listening tests, but there seems to be no consensus.
-- "Codito ergo sum" Roel Schroeven
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