C++ 视频流检测 FPS [英] C++ Video Stream detect FPS

问题描述

我尝试从轴或 Eneo 相机获取视频流的正确 fps.

I try to get the correct fps of a video stream from an axis or eneo camera.

rtsp://192.168.0.1:554/axis-media/media.amp

我使用 cv::VideoCaptureget(CV_CAP_PROP_FPS); 但是对于某些相机，结果无效，例如结果是 180000，但正确的值是 25.我已经用wireshark 检查过它并查看 SDP 协议是正确的.

Media Attribute (a): framerate:25.000000

cv::VideoCapture::get 读取了哪些信息?

推荐答案

OpenCV 不是很擅长这类事情，而且很可能会在很大一部分时间出错.如果您立即准确地需要它，那么我建议您查看其他相机打开库.

OpenCV Isn't very good at this sort of thing, and likely will get it wrong a large percentage of the time. If you need this accurately immediately then I would suggest looking into other camera opening libraries.

或者，您可以在打开流后对其进行配置 - https://www.learnopencv.com/how-to-find-frame-rate-or-frames-per-second-fps-in-opencv-python-cpp/

Alternatively you could profile the stream after opening it - https://www.learnopencv.com/how-to-find-frame-rate-or-frames-per-second-fps-in-opencv-python-cpp/

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