Expose list of VideoCapture devices #23844

2022年4月14日 — What I would like to do is: scan a directory for video (mp4) files; open each file for processing with opencv videocapture. # file operations ...

Class for video capturing from video files, image sequences or cameras. The class provides C++ API for capturing video from cameras or for reading video files ...

2022年4月14日 — Scanning directory and processing multiple files with cv2.VideoCapture() · Python · videoio, programming.

The sample shows how to create a Python extension to invoke DirectShow C++ APIs for enumerating capture devices and corresponding resolutions. Environment.

2023年6月21日 — Describe the feature and motivation. There is no way currently, within OpenCV, to list existing devices to let the user select them.

2021年4月26日 — Organize your knowledge with lists and highlights. Tell your story. Find your audience. Sign up for free. Membership. Access the best member ...

The sample shows how to create a Python extension to invoke DirectShow C++ APIs for enumerating capture devices and corresponding resolutions. Environment.

2020年4月3日 — I use [python]cv2.VideoCapture()[python] function from the openCV library in the software. The function need to get index of the video ...

2019年8月20日 — You see devices.count returns the number of available devices but OpenCV doesn't have a method to return that to the user. The ...

2011年11月8日 — This method returns a list of all indexes that return something when read; I'm sure it can be improved upon, but there are hardly ever more than ...