Incidentally `-y` also collides with avconv global options.
Update x11grab to match and document the option.
CC: libav-stable@libav.org
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
The feature is implemented using a transparent window and drawing
inside it a rectangle filling the whole window to highlight it.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Fixes trac ticket #4164
This is to address an error when using show_region, which would cause part of the captured area to become static.
It looks like the rectangle specifying the capture area was relative to the capture window.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Old versions of libxcb do not provide xcb_shape_rectangles().
The issue can be fixed differently but this small change fixes
some fate platforms and a user reported compilation problem.
Reported and tested by trac user kevmitch.
Fixes ticket #4067.