Generally speaking, video replay is handled/accellerated by video card.
For example, mpeg4 movie currently is popular. But it is a bad idea to
let CPU to do Motion-Comp. So the movie image should be rendered by
video card to video ram.
We have many surfaces in video card, including VGA, video, etc. Just
like TonyN said. It seems the screen capture of Linux will not access
the video area.
Thanks and Regards
Samuel Yin
Tony Nelson 写道:
At 1:47 AM +0600 11/4/05, Strong wrote:
On Sun, 2005-09-18 at 18:45 -0400, Graham Campbell wrote:
Another option, From the RedHat menu button, select
Desktop->Preferences->Keyboard Shortcuts. Look for the "Take a
Screenshot" and "Take a Screenshot of a Window".
Why I can't make a screen shot of mplayer movie? - It takes the window
covered with blue inside, but no movie picture!
DRM!
No, actually it's magic. Or just about, as the video card is compositing
the video onto the regular desktop using a color key. At least, that's how
it was done on MacOS some years back. Probably doing accellerated decoding
on the video card.
____________________________________________________________________
TonyN.:' <mailto:tonynelson@xxxxxxxxxxxxxxxxx>
' <http://www.georgeanelson.com/>
|
