http://bugs.winehq.org/show_bug.cgi?id=58491
--- Comment #10 from AndyF andreas.franz@arcor.de --- Created attachment 79296 --> http://bugs.winehq.org/attachment.cgi?id=79296 How-to-open lokal MP4
.. which has the same issue. With software renderer, an standard-MP4 is shown normally. With D3D11 you will see "nothing". So you can test without a real camera-system.