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List:       kde-bugs-dist
Subject:    [Bug 130185] Wrong (halfed) play times for mono/single channel mp3
From:       Robert Hegemann <robert () users ! sourceforge ! net>
Date:       2006-12-26 22:55:25
Message-ID: 20061226225525.24024.qmail () ktown ! kde ! org
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http://bugs.kde.org/show_bug.cgi?id=130185         




------- Additional Comments From robert users sourceforge net  2006-12-26 23:55 \
------- commenting #24:

in case of MPEG-2(.5) the offset is even different

MPEG-1     4+17(1ch) 4+32(2ch)
MPEG-2(.5) 4+ 9(1ch) 4+17(2ch)

4 bytes SYNC word plus 9, 17 or 32 bytes used for sideinfo

A Xing header is some valid MP3 frame which decodes to silence, the Xing-data follows \
after the sideinfo within the so called "ancillary data"

Caution: in case CRC protection is used, Xing header data does not compensate this \
and will start at the positions as noted above (2 bytes too early, but that's legacy \
and we have to accept it)!


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