Is anyone able to tell me what movie file format to use that will show up in Poser Pro 2010 Mac's Preview window when the Movie shader node is attached to the diffuse color input of a prop?

Any prop will do. Simple square, cloth plane, cube, anything.

I am trying to synchronise a figure animation with a movie scene and the only movie that displays in the preview window is one plugged into the BG Movie shader node of the background. Unfortunately, the BG Movie is displayed differently in the SreeD Preview (fills the Preview Window top to bottom) and OpenGL Preview Window (Seems to be about 3 times the actual movie dimensions but still only 2/3 of the Preview Window size).

I've been through the SM support mill trying to get a GIF animation synchronised frame by frame with the Poser animation frames, but that seems non-deterministic in which frames will be displayed or skipped and is, unfortunately, officially unsupported. I was told to use AVI, but being on a Mac I chose to turn my head to the side before snorting unmentionables all over my keyboard. The manual says MOV for the Mac platform anyway.

Anyway, enough digression about unsupported file formats. Has anyone been able to Preview a movie on a prop? Even on PC?

I can render it no trouble at all. But I need the movie visible in Preview to synchronise the figure animation and that only seems to work on the Background which is static in relation to camera movements and tedious to relocate within the Preview Window (edit UVscale & offset in the Material Room) as opposed to just dragging a screen prop.

You could try File/Import/Quicktime footage... (for .mov file), which will put it in the background, and should show in Preview mode.  Use that to sync your Poser animation. Then before you render, remove the footage from the background and put it on the prop. Hopefully the timing will be the same in both places. gl ^ ^