[FFmpeg-user] OpenEXR input with cropped data window produces black output

[Martin Vignali]

Hello,

FFmpeg EXR decoder, have some trouble with display window != data window
And if i remember correctly, if top left doesn't start at 0/0

But the way to manage the display window, is not the same, if data window
is bigger than display window or the opposite.

I begin to work on this, but not enough time now to finish this patch

Martin