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Questions tagged [video-capture]

Questions related to computer oriented video capture and the programming tools and solutions for dealing with captured frames from a video.

2460 questions
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Estimate color distribution with Gaussian mixture model

I am trying to use two Gaussian mixtures with EM algorithm to estimate color distribution of a video frame. For that, I want to use two separate peaks in the color distribution as the two Gaussian means to facilitate the EM calculation. I have…
E_learner
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is there a way to create a one on one video call without the use of media server?

I've been looking around the net if this has been done. I've seen an HTML5 application but it seems that only few browsers support this. I've also seen the one created by Ericsson but it was way back 2010-2011. Technically, what I wanted to ask if…
ajib
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How to sync between recording and input live video stream?

I am working on a project in which I am receiving raw frames from some input video devices. I am trying to write those frames in a video files using FFMPEG library. I have no control over the frame rate i am getting from my input sources. This…
Abhishek Bansal
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How to trim a recorded video from the camera in iPhone?

I am developing an iOS application which is used to upload videos to the server, my problem is that after recording an unlimited video from the camera , the user is allowed to select a maximum 3 min length video from the full length video. But in…
user1702158
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How do I write captured frame into socket?

In my app, I am capturing media as frames using - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection delegate, I have recorded and…
Newbee
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AVCaptureStillImageOutput never calls completition handler

Following code doesn't work. Whats wrong? AVCaptureDevice * videoDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]; AVCaptureDeviceInput * videoInput = [AVCaptureDeviceInput deviceInputWithDevice:videoDevice…
k06a
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How to capture still image from a live video programatically

When i try to take a screenshot of my desktop I found the area of the Windows Media Player window was empty, nothing in it, I google for it for a while and found that most of video players user Overlay surfaces for performance, and overlay surfaces…
zdd
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OpenCV does not open videos on other computers

I have the x64 project that works perfectly fine on my Windows 7 machine whether I run deployed version or in the Visual Studio 10. Now, I got a hand on 4 other machines with x64 Windows 7 platforms and tried to install on them, however those ones…
Vilius Narbutas
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Get images from a video in every N frames

I am looking for some tool or program to automatically grab snapshots (a few mins interval) from a video file without display it for me. Mkv support would be nice!
Pmillan
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VFW_E_NOT_IN_GRAPH in directshow's video-capture

Me again, trying to use directShow. I tried to implement an example from a camera-distributor to read the camera (I would like to get frames in Form of an Byte-Array) and am getting a VFW_E_NOT_IN_GRAPH-Error when trying to connect the pins. I…
Julian
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Is there a iOS Javascript library available that will allow me to limit video recording duration?

PhoneGap's VideoCaptureOptions accepts a duration parameter but it's currently not supported :s We'd really like to build out app as an HTML5/CSS3/Javascript app, but this one feature is a show-stopper. Any help would be greatly appreciated!!
SomethingOn
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Does anyone know a way to capture webcam video at a constant framerate?

OK, so I have been having a bit of a tough time with webcam capture, and am in need of help to find a way to capture the video at a consistent frame rate. I have been using Aforge.AVIWriter and Aforge.VideoFileWriter, but to no avail, and have also…
RogueBudz
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Android video capture intent crashes

I need to record a video within the application using the intent. I think the code is correct, however when I do start the image stops and the file gets 0Bytes. I let down the code I'm using. The first function called: protected void makeVideo() { …
marceloamx
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DirectShow Filters - how to use and find correct filters

I have a program that was developed using capFilter-"Ds.Net Video Capture Device" and baseGrabFlt-"Ds.Net Grabber". I am not that familiar with DirectShow and have been trying to determine why this program suddenly stopped working on two machines…
Michael
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how to convert audio output data into frames using AVFoundation in iphone sdk

I am trying to capture the video and audio using AVCaptureSession and I done with videocapturing and converted into pixel buffer and I played the output captured video at server side using ffmpeg n rtmp server. But the thing is how can I make the …
Monish Kumar
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