directshow

A few years back, I wrote some util library around DShow/DSound to let me play MP3s in a Windows C++ application. Is that still the normal way to do it in a C++/MFC app, or is that an area of DirectX that has been subsumed into the general Windows APIs? The motivation is simply we use the standard Windows PlaySound method for WAVs, and would like to be able to play MP3s using a similarly simple API, either provided by Windows or something we write to wrap more complex functionality. EDIT: this is for a large, commercial, closed-source project. And we only want to play things simply, paying a

I have a Directshow application that needs to preview a webcam video, and when user clicks 'Record' it needs to start capturing the video to a file. To that end I created a single Capture Graph, with PREVIEW pin connected to a RENDER filter and CAPTURE pin connected to a AVI_MUX filter that saves to a file. It looks something like this: /[PREVIEW PIN]-->[VIDEO_RENDERER]--->[SCREEN] [VIDEO CAPTURE FILTER] / \ \[CAPTURE PIN]--->[AVI_MUX]--->[FILE WRITER] When I call Run() on the graph the video shows on screen and gets saved to the file correctly. My question is, how can I only run the PREVIEW

I'm streaming video to my Window Form with DirectShowLib. I also want to save image when i press button "Save" for example. How to get picture from webcam with DirectShowLib methods or with WIN32 API methods? DirectShow.NET Samples are there: http://sourceforge.net/projects/directshownet/files/DirectShowSamples/2010-February/ The following sample demoes the requested function: Samples\VMR9\vMR9Snapper ------------------------ This sample shows how to capture bitmaps from VMR9. Having it working with other renderer might require small code modifications. The question also discussed a multitude

I have a video engine2.avi that I want to read and show with openCV. Here's my code: #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <iostream> using namespace cv; int main(int argc, char** argv) { string filename = "D:\\BMDvideos\\engine2.avi"; VideoCapture capture(filename); Mat frame; if( !capture.isOpened() ) throw "Error when reading steam_avi"; namedWindow("w", 1); for( ; ; ) { capture >> frame; //if(!frame) // break; imshow("w", frame); waitKey(20); // waits to display frame } waitKey(0); } This code doesn't work if my file has the codec YUV 4:2:2 (UYVY)

I am looking for an effective way to grab image data off video files. I am currently testing FilgraphManagerClass.GetCurrentImage() from the Interop.QuartzTypeLib library. This does what I need but is painfully slow. I need to process all frames of each video. What better options do I have? Requirements Must be frame accurate. <-- Very important! Gives me access to the decoded pixel buffer (array of int or byte[] ), ideally RGB24 or RGB32. The buffer can be grabbed in realtime or faster. I do not need to display the video, I only need to analyze the pixels. Handle mp4 files (h264/aac). I can

DirectShow samples lived under (SDK samples root)\DirectShow\ in the Windows 7.1 SDK, but the Windows 8 SDK does not have the files neither in C:\Program Files (x86)\Windows Kits\8.0 nor C:\Program Files (x86)\Microsoft SDKs\Windows. The samples are also not for download at http://code.msdn.microsoft.com/windowsapps I believe DirectShow is to be phased out and replaced by Microsoft Media Foundation (MF). I think that's been the intention since Windows Vista, although at that time MF was not capable enough to replace DirectShow. Microsoft representatives have stated that DirectShow will not be

I have developed DirectShow C++ app which successfully previews web cam view into provided window. Now I want to capture image from this live web cam preview. I have used graph manager, ICaptureGraphBuilder2, IMoniker etc. for that. I have searched and found following options: WIA & Sample Grabber. Many recommends using SampleGrabber but as per MS's msdn document SampleGrabber is deprecated and one should not use. And I don't want to use WIA API. So which is the best DirectShow way to capture image from live web cam preview? Here is a quote from DxSnap sample from DirectShow.NET library : Use