simpest way to get audio/video data from directshow

Question

I compiled the DirectShow sample player (from the Windows SDK's "Samples\\multimedia\\directshow\\players\\dshowplayer" folder).

Everything works well but it renders directly to the screen and the audio goes directly to directsound. I need to be able to grab the data and write out images to BMPs and write out the audio to .wav.

Am I using the wrong sample as a starting point? If not, what is the easiest way to modify the sample so I can get access to the video and audio data?

Thanks!

Answer 1

You can insert a SampleGrabber filter before the renderer, and use the ISampleGrabberCB Interface to access the data. You can still render the video to the screen, and output the audio. If you don't want that, use a NullRenderer instead. See also this example on codeproject .