On Sun, Aug 6, 2017 at 4:39 PM, Gyan <gyandoshi at gmail.com> wrote: > Is ticket #6566 also related? This test case on ticket #6566 indeed freezes during the overlay on my patched FFmpeg with the alteration to libav/vf_stack.c taken out. I have not been able to test it in another way yet. Kind regards, JW