ScreenShot movie

[berus4]

I'm trying to make a screenshot movie like Apple does on some of their web
pages to show how to do something. I have used glGrab example to make screenshots but it is slow and i get about 6 fps. Do anybody now how to speed up this?

[OneSadCookie]

Buy iShowU or Snapz Pro X and use them rather than reinventing the wheel?

[berus4]

Buy iShowU or Snapz Pro X and use them rather than reinventing the wheel?

But i want create free software.

[OneSadCookie]

Well, the basic idea is that you should have 2-3 PBOs, and ReadPixels into each in turn, then save out the frames. What you do from there is slightly harder to decide. My bet is on compressing directly into a quicktime movie, with a low-cpu codec.

Other people have tried and failed to do this. It's not straightforward. In particular, capturing the screen at a decent framerate as a window minimizes appears to be very difficult.

[berus4]

OK. Thanks.