DirectShow - Getting video frames

问题:

I'm creating a Windows video capture application and am using DirectShow for capture. As each frame comes in, I want to grab it as a raw RGB bitmap into a buffer, at which point my code will do whatever processing I need.

I've been searching for samples similar to what I want to do, and everywhere I look online, people recommend using either the IMediaDet and/or the ISampleGrabber interface to do frame-by-frame capture. Unfortunately, both are deprecated and aren't even in the newest version of the Windows SDK.

What is the best (modern) way to do frame-by-frame capture in DirectShow? If there is none, is there a different library I should use that will give me frame-by-frame capture?

回答1:

Sample Grabber was deprecated a few years ago, which was a few years after DirectShow development actually stopped. That is, use Sample Grabber as you read as suggested method and it is going to work great for you.

The only thing you will additionally need is to copy definitions int your source code, see details:

• Alternative for ISampleGrabber
• Sample Grabber replacement
• ISampleGrabber deprecated: where can I find alternatives?