So I gueess its a codec problem.
From what I can say you will only see flicker when DXVA is used. So my assumption is you do not see it on codecs not supporting DXVA.
grubi.
Not exactly true. On my machine only Cyberlink codecs expose this issue. If I e.g. use the ATI avivo codecs which make also use of DXVA I don't see any flickering at all. It also does not flicker using ffdshow software decoding with interlaced flag for the renderer to let the GPU do the deinterlacing.
Germany