warning: Error opening file (C:\Users\vp\work\ocv\opencv\modules\highgui\scr\cap_ffmpeg.cpp:454)

vs2010+opencv2
程序生成没有问题，运行出错：
warning: Error opening file (C:\Users\vp\work\ocv\opencv\modules\highgui\scr\cap_ffmpeg.cpp:454)
$warning: Error opening file (C:\Users\vp\work\ocv\opencv\modules\highgui\scr\cap_ffmpeg.cpp:454)$

解决办法：
将视频打开路径添加完整
原来的 “people.avi”
改为 ”…/people.avi"

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