After reading the link you provided I noticed that we can also provide an mjpeg. Depending on what your test requirements – this may be sufficient for you. As a terminal command with ffmpeg installed: ffmpeg -i oldfile.mp4 newfile.mjpeg then I tested by running Google Chrome from the terminal using: google-chrome –use-fake-device-for-media-stream –use-file-for-fake-video-capture=newfile.mjpeg After navigating … Read more
The problem as mentioned above is caused by the camera driver. I was able to fix it using Direct Show as a backend. I read (sorry, but I do not remember where) that almost all cameras provide a driver that allows their use from DirectShow. Therefore, I used DirectShow in Windows to interact with the … Read more
You can use the following bash command: v4l2-ctl –list-devices In order to use the above command, you must install package v4l-utils before. In Ubuntu/Debian you can use the command: sudo apt-get install v4l-utils
Virtual webcam is typically a software only implementation that application discover as if it is a device with physical representation. The mentioned applications use APIs to work with web cameras and ability to extend the APIs and add your own video source is the way to create a virtual web camera. In Windows there are … Read more
Install mplayer mplayer -vo png -frames 1 tv://
Ok, still no clear, definitive answers, so I went on and took a little action. The WHATWG would probably have an answer for me, so I decided to contact someone there. Didn’t really know who it had to be, but fellow Dutchman Anne van Kesteren usually seems to know the Web’s future pretty well – … Read more
@thebjorn has given a good answer. But if you want more options, you can try OpenCV, SimpleCV. using SimpleCV (not supported in python3.x): from SimpleCV import Image, Camera cam = Camera() img = cam.getImage() img.save(“filename.jpg”) using OpenCV: from cv2 import * # initialize the camera cam = VideoCapture(0) # 0 -> index of camera s, … Read more
I’m using openCV 1.1pre1 under Windows (videoinput library is used by default by this version of openCv under windows). With these instructions I can set camera resolution. Note that I call the old cvCreateCameraCapture instead of cvCaptureFromCam. capture = cvCreateCameraCapture(cameraIndex); cvSetCaptureProperty( capture, CV_CAP_PROP_FRAME_WIDTH, 640 ); cvSetCaptureProperty( capture, CV_CAP_PROP_FRAME_HEIGHT, 480 ); videoFrame = cvQueryFrame(capture); I’ve tested … Read more
If you want a “capture/streamer in a box” component, there are several out there as others have mentioned. If you want to get down to the low-level control over it all, you’ll need to use DirectShow as thealliedhacker points out. The best way to use DirectShow in C# is through the DirectShow.Net library – it … Read more
An update to show how to do it in the recent versions of OpenCV: import cv2 cv2.namedWindow(“preview”) vc = cv2.VideoCapture(0) if vc.isOpened(): # try to get the first frame rval, frame = vc.read() else: rval = False while rval: cv2.imshow(“preview”, frame) rval, frame = vc.read() key = cv2.waitKey(20) if key == 27: # exit on … Read more