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From "Oliver Heger (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TIKA-990) Mp3Parser extracts wrong number of channels
Date Mon, 03 Sep 2012 20:18:07 GMT
Oliver Heger created TIKA-990:
---------------------------------

             Summary: Mp3Parser extracts wrong number of channels
                 Key: TIKA-990
                 URL: https://issues.apache.org/jira/browse/TIKA-990
             Project: Tika
          Issue Type: Bug
          Components: parser
    Affects Versions: 1.2
            Reporter: Oliver Heger


In class {{AudioFrame}} the last two bits of the MPEG frame header are used to determine the
number of channels. According to my documentation, this information is encoded in bits 7 and
6.

I did a cross check with the ID3 tag editor tool ID3-TagIT (http://www.id3-tagit.de/). The
unit tests expect that the test MP3 files have 2 channels. However, the tool reports that
the files are mono.

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