ffdshow in blu-ray post processing filters blackens the screen of first playback (1 Viewer)

[M.Hulot]

When using ffdshow Video decoder in the Blu-ray video postprocessing section to make sure, that AV delay works in several skins, the following happens: Starting an Blu-ray-Iso-file blackens the the screen. I have to stop, then start the movie again and everything works fine. Other Blu-rays I start after this play correctly. Just the first playback ends up in the black screen.
Deactivating ffdshow let everything work fine - but then I can't use AV Delay in the OSD menu.

Any suggestions how to solve this?