Turns out I must have been wrong - in looking at prior projects, the poster frame in the scene menu is a frame from the start of the scene and does NOT appear to be something I can substitute with my own graphics. Could have sworn I've done this in a prior version of PRE but cannot find an example where I did so.
In Adobe Encore (the authoring program, included with PrPro), one can set the Poster Frame for non-Motion Thumbnails.
For showing a different Clip, in Motion Thumbnails, one must create Menus, that have a Video background, that just looks like it has Motion Thumbnails - they are actually PiP in the Video background.
I do not know about the often touted Sony DVD Architect, regarding setting Poster Frames.
PrE's authoring control is a bit limited, and is designed to get the "average" Project authored, with few navigational bells and whistles.
Yes, you can add any number of frames to the scene menu thumbnails in DVD Architect, if that's what you're asking.
I'm not acquainted with the term "poster frame" though. Is that an Encore word?
Yes, that was what I was not sure of.
Thank you for that clarification - appreciated.
the poster frame in the scene menu is a frame from the start of the scene and does NOT appear to be something I can substitute with my own graphics.
But you can pick a different frame from the scene. So you might be able to do a workaround by adding your graphic as single frame to the scene somewhere innocuous.
Insanity is hereditary, you get it from your children