问题
How can the linux frame buffer, on Cell Linux, be captured to obtain either screen shots or movies?
Is there a tool to do this for a running program, or must the program writing to, and presumably controlling, the frame buffer also handle capture and recording? If so, how would the program do so?
回答1:
Many tools for doing so, for example FBGrab and fbdump; look at the sources for those two, it would be pretty easy to extend either one or write your own which captures video instead of just snapshots.
However, I would recommend that the program writing to the framebuffer be the one recording as well, in order to synchronize capturing frames between writing them (and not partially through a write, or skipping, or ...)
回答2:
you could use ffmpeg or avconv (eg. avconv -f fbdev -i /dev/fb0 mymovie.flv).
来源：https://stackoverflow.com/questions/1861472/how-to-screen-capture-screenshots-or-movies-on-the-linux-framebuffer