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File duration requires 64-bit atom structures


wowzastreamingengine_error.log file is getting filled by messages,

WARN    server    comment    2015-11-30    05:26:49    -    -    -    -    -    1845.614    -    -    -    -    -    -    -    -    QTWriterUtils.writeMOOVAtom[/var/storage1/camera_4/4_20151130045658233253_1342.mp4]: File duration requires 64-bit atom structures. File may not play properly in QuickTime for Windows.
WARN    server    comment    2015-11-30    05:26:50    

This happened after updated to version

What is wrong with?




This message is indicating that the duration of the file is so long that it won’t fit into a 32-bit integer, which is used in version 0 of some of the MP4 atoms to store the duration. Therefore we have to use version 1 of those atoms which supports 64 bit durations.

However, some versions of QuickTime for windows do not support version 1 atoms, which is what this message is warning about. Unless you try to play the file in certain releases of QuickTime on Windows then you can ignore this message.


Hello Paul,

Thank you for the information.

However is it possible to stop writing these messages into log files?


Hello Michelle,

Thank you for the information. Now I understand !



Hi Nineesh,

These lines are only informational, and you can safely ignore them. However, you can opt to shorten the segmentDuration for your livestream recordings so that the duration can be recorded to version 0 of the MP4 atom.