video-capture

问题 I found similar questions in stackoverflow. But I want to be specific. I visited a web site screencast-o-matic. They have a web-application of java applet which capture screen to export as video. I want to develop similar application. What are the knowledge and steps required to do it? Thanks and regards. Edit another website screenr. 回答1: To get a screenshot, use Robot.createScreenCapture(Rectangle) . To get many screenshots, call that in a loop invoked by a (Swing) Timer . Add them to an

问题 Okay, so we can now submit video previews of our apps on the App Store. According to Apple we should do so with an iOS8 device and OSX 10.10. The problem is you have to have all the different devices (4\", 4.7\", 5.5\" and iPad). Is there an alternative to this? I am thinking of capturing a video of the simulator. The problem is the device screen is bigger than my FullHD monitor when shown in 100% resolution. Any solution that can capture a video right from the simulator in full resolution?

问题 Do you have some library to capture a screen to be a compressed video file or some solution that can do it? 回答1: Your best option seems to be Windows Media Encoder. Here are some links: http://www.c-sharpcorner.com/UploadFile/armoghanasif/CaptureDesktopActivities11122005013755AM/CaptureDesktopActivities.aspx http://www.codeproject.com/KB/audio-video/CaptureScreenAsVideo.aspx http://mycomponent.blogspot.com/2009/04/capture-screen-activitiesvideo-using.html 回答2: This code uses SharpAvi

问题 I\'m using Python 2.7 and OpenCV 2.4.9 . I need to capture the current frame that is being shown to the user and load it as an cv:: Mat object in Python. Do you guys know a fast way to do it recursively? I need something like what\'s done in the example below, that captures Mat frames from a webcam recursively: import cv2 cap = cv2.VideoCapture(0) while(cap.isOpened()): ret, frame = cap.read() cv2.imshow(\'WindowName\', frame) if cv2.waitKey(25) & 0xFF == ord(\'q\'): cap.release() cv2

问题 I am developing an application which will be able to record video from background of application by using Service . Problem description : In my application recording will be scheduled. If user want to record video from 1 PM to 3 PM, he will schedule the task and can exit from application. Application will automatically start recording at 1PM to 3PM. What I did yet : I googled about my query but didn\'t get solution. Many articles say that it is not possible. But in Google Play there are some

问题 I am looking into an image processing problem for semi-real time detection of certain scenarios. My goal is to have the live video arrive as Motion JPEG frames in my Java code somehow . I am familiar with the Java Media Framework and, sadly, I think we can consider that an effectively dead API. I am also familiar with Axis boxes and, while I really like their solution, I would appreciate any critical feedback on my specific points of interest. This is how I define \"best\" for the purpose of

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Is there a way to record the screen, either desktop or window, using .NET technologies. My goal is something free. I like the idea of small, low cpu usage, and simple, but would consider other options if they created a better final product. In a nutshell, I know how to take a screenshot in C#, but how would I

问题 I just wrote a simple video reading example with openCV2.3.1, but it seems that I cannot open avi video anyway :( VideoCapture capture(\"guitarplaying.avi\"); if(!capture.isOpened()){ std::cout<<\"cannot read video!\\n\"; return -1; } Mat frame; namedWindow(\"frame\"); double rate = capture.get(CV_CAP_PROP_FPS); int delay = 1000/rate; while(true) { if(!capture.read(frame)){ break; } imshow(\"frame\",frame); if(waitKey(delay)>=0) break; } capture.release(); I made a breakpoint in std::cout<<\

问题 I need to be able to have AVCaptureVideoDataOutput and AVCaptureMovieFileOutput working at the same time. The below code works, however, the video recording does not. The didFinishRecordingToOutputFileAtURL delegate is called directly after startRecordingToOutputFileURL is called. Now if i remove AVCaptureVideoDataOutput from the AVCaptureSession by simply commenting out the line: [captureSession addOutput:captureDataOutput]; The video recording works but then the SampleBufferDelegate is not

问题 I am trying to implement a screen sharing web application that will use the desktopCapture Chrome API to display the users screen on a web page. I have created the chrome extension and have an event listener running in the background. My problem is when I try to send a message from the web page to the extension (to get the userMedia id) I am not receiving anything on the extension side. I am also trying to return the getUserMedia id back to the webpage to display the feed. I have attached