有聲冇畫面..點解會咁
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Stream 1

Media Type 0:
--------------------------
AM_MEDIA_TYPE:
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formattype: FORMAT_VideoInfo {05589F80-C356-11CE-BF01-00AA0055595A}
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bTemporalCompression: 0
lSampleSize: 21472
cbFormat: 122
VIDEOINFOHEADER:
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rcTarget: (0,0)-(0,0)
dwBitRate: 533327
dwBitErrorRate: 0
AvgTimePerFrame: 434782
BITMAPINFOHEADER:
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biHeight: 352
biPlanes: 3
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biCompression: RV40
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biXPelsPerMeter: 0
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biClrUsed: 0
biClrImportant: 0