[FFmpeg-user] Problem with GDIGRAB device on Windows 7

[David Peterson]

Is there a way to use ffmpeg to "grab" an IOS screen"

Dave

On Sat, Nov 22, 2014 at 2:22 PM, Roger Pack <rogerdpack2 at gmail.com> wrote:

> On Sun, Oct 5, 2014 at 9:26 PM, Yan Brenman <ybrenman at xopnetworks.com>
> wrote:
>
> > Hello ffmpeg/gdigrab gurus!
> >
> > We are using "gdigrab" device on Windows to share/stream video for a
> > specific application window (identified by a title as "gdigrab"
> requires).
> > Everything works great on Window 8.x - actual application window (and not
> > the region on the desktop occupied by the application window)
> > is getting shared and successfully played by the player on the receiving
> > side. Which means that even if shared window is overlapped by the
> > other window on the source - still the application window is getting
> > played.
> > Unfortunately, as we discovered, "gdigrab" doesn't work correctly on
> > Window 7. And instead window sharing it actually does the region sharing.
> > Which pretty much means that if shared window is being overlapped by the
> > other window on the desktop - that's what getting played on the
> > receiving side.
> > Just for reference - we tried to do window sharing with
> > screen-capture-recorder and unfortunately got exactly the same results.
> >
> > I would greatly appreciate any help/advise anybody can provide on the
> > subject. And please let me know if there is any other information I can
> > provide.
> >
>
> Unfortunately there's no easy "fix" unless someone were to implement the
> "PrintWindow" API.
> Patches welcome, for sure.
> -roger-
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