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

[Roger Pack]

On Wed, Nov 26, 2014 at 6:46 AM, David Peterson <dpeterson478 at gmail.com>
wrote:

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

I doubt it.  Maybe OS X but I'm not even sure there.


>
> 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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