opencv打开摄像头报错：CvCapture_MSMF::initStream Failed to set mediaType (stream 0, (640x480 @ 30) 解决办法及相关内容

计算机刘老师

于 2022-03-13 17:00:12 发布

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分类专栏：人工智能文章标签： opencv 人工智能计算机视觉

本文链接：https://blog.youkuaiyun.com/ltl451011/article/details/123462206

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本文介绍了在使用OpenCV时遇到的CvCapture_MSMF::initStream错误，关于无法设置mediaType的问题。内容包括错误原因分析及针对640x480 @ 30帧率配置的解决方法，帮助读者成功打开和使用摄像头。

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cap=cv2.VideoCapture(0,cv2.CAP_DSHOW)

enum VideoCaptureAPIs {
       CAP_ANY          = 0,            //!< Auto detect == 0
       CAP_VFW          = 200,          //!< Video For Windows (obsolete, removed)
       CAP_V4L          = 200,          //!< V4L/V4L2 capturing support
       CAP_V4L2         = CAP_V4L,      //!< Same as CAP_V4L
       CAP_FIREWIRE     = 300,          //!< IEEE 1394 drivers
       CAP_FIREWARE     = CAP_FIREWIRE, //!< Same value as CAP_FIREWIRE
       CAP_IEEE1394     = CAP_FIREWIRE, //!< Same value as CAP_FIREWIRE
       CAP_DC1394       = CAP_FIREWIRE, //!< Same value as CAP_FIREWIRE
       CAP_CMU1394      = CAP_FIREWIRE, //!< Same value as CAP_FIREWIRE
       CAP_QT           = 500,          //!< QuickTime (obsolete, removed)
       CAP_UNICAP       = 600,          //!< Unicap drivers (obsolete, removed)
       CAP_DSHOW