How to stream contents of a WPF form (as frames) to an AVI File?

I currently send a live video mix to a output screen (a form on a particular screen). Consider it like a really advanced version of PowerPoint. I call it a video control room for the pc. I want to take 30 frames a se开发者_Python百科cond from a screen (of my choice, I allow multiple screens) and the audio from the computer (stereo) set, save it to a hard disks. How do I do that?

I know I can draw the image of the interface using the RenderTargetBitmap class, but How do I put those images (as frames) in an AVI file or push it to a video server? An SDK? or a Code Example to point me in the right direction, would be nice! I also want to capture the sound of the current Stereo mix, or microphone (as determined by the user).

I don't want to use a third-party and I'd prefer doing it in the program to take maximum control over it. I'm ok, with using a second program to do compression and just saving a raw AVI file (with audio stream). Disk is cheap, as any programmer would say. If I have to, I'll save the video and audio streams separately, but I'd prefer not to.

Let me know.

Check out the RenderTargetBitmap class. it allows you to turn any visual into pixels that you can then pass along to an encoder/network stack, like the ones described here

also check out Windows media foundation for turning your pixels into an avi or stream