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Old 2007-05-08, 11:33 AM
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diggrd diggrd is offline
 
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Re: Problem encoding to FLAC

I did include any other audio editing program as the possible culprit. I believe the UMID is Unique Material Identifier Data or some such thing, and was added to the audio data at some point possibly for European broadcast, the reason for the error is flac handles audio data only. Do you have a hex editing program that could open a copy of the wav and see what data is there?

from http://flac.sourceforge.net/faq.html..._wave_metadata
Quote:
FLAC is a general-purpose audio format, not just a compressed WAVE file format. There's a subtle difference. WAVE is a complicated standard; many kinds of data besides audio data can be put in it. FLAC's purpose is not to reproduce a WAVE file, including all the non-audio data that is in it, it is to losslessly compress the audio.

WAVE is a complicated standard; many kinds of data besides audio data can be put in it. Most likely what has happened is that the application that created the original WAVE file also added some extra information for it's own use, which FLAC does not store or recreate (see also). But the audio data in the two WAVE files will be identical. There are other tools to compare just the audio content of two WAVE files; ExactAudioCopy has such a feature.
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Last edited by diggrd; 2007-05-08 at 11:38 AM.
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