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Old 23rd November 2005, 17:37   #2  |  Link
akupenguin
x264 developer
 
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Join Date: Sep 2004
Posts: 2,392
They have different fps. MP4Box ignores the fps for the purpose of determining frames' timestamps, but it still means that the SPS headers are not bitwise identical.
Simplest way I can fix it: mux each to mp4, then append them in mkvmerge.
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