回答：你的视频路径名看对不,比如:D:\\vedio\\test.avi,在c中读取斜杆字符需要在前面加上"\".或者看你的视频格式对不,有时候有的avi格式也读不出来,你可以用Formatfactory转一下
OpenCV 3.0 VideoCapture doesn't open video file in Java, but there is no problem if open camera. - Target version set to 3.0 Maksim Shabunin on 2015-04-28 12:35 - Category set to java bindings opencv-pushbotaddedbugauto-transferredpriority: highaffected: 3.4category: java bindingslabelsJul...
const cap = new cv.VideoCapture('./roadtest1.mp4'); // Error: VideoCapture::New - failed to open capture I get the same results with an RTSP stream as well. This is on version 4.5.1 (autobuilt) on a fresh Ubuntu install, the only things ...
GitHub https://github.com/gongluck/Opencv3.4-study.git #include "opencv2/opencv.hpp" using ...
GitHub https://github.com/gongluck/Opencv3.4-study.git #include "opencv2/opencv.hpp" using ...
在OpenCV 中,cv::VideoCapture类用于从视频文件或摄像头捕获视频流。cap.open()是cv::VideoCapture类的一个成员函数,用于打开视频源。以下是关于cap.open()的详细介绍: 函数定义 cv::VideoCapture::open有两个主要的重载形式: bool open(int index) 这个重载版本用于打开一个视频捕获设备,例如摄像头。index是设备的...
qt + openc..qt + opencv3.4.10 VideoCapture的open函数能打开电脑自带的摄像头但是打不开视频文件视频文件没有问题 路径无误已经把opencv_ffmpeg3410的dll放到了exe
如果摄像头初始化失败,可以使用函数cv2.VideoCapture.open()打开摄像头。该函数的语法格式为: cap = cv2.VideoCapture(0) retval = cap.isOpened() if retval==False: cap.open(index)# index可以是-1,0,1,或者其它的数字,表示摄像头的id # 注意,cap.open()也可以处理打开视频文件, cap.open('视频文件名...
1 VideoCapture 类2 //方法一3 VideoCapture capture;4 capture.open("test.avi");5 6 //方法二7 VideoCapture capture("test.avi"); 1. 2. 3. 4. 5. 6. 7.1 #include <opencv2/opencv.hpp> 2 #include <iostream> 3 //#include <opencv2/highgui/highgui.hpp>...