Selecting the Preview Frame for Video Shaders in XPression

When using videos as replaceable materials in XPression, it is always tough. So many times, artists create video which start with a black screen and animate to display franchise content or other information. Ironically, they all seem to use the same points in time for each animation. So now, rather than using FRAME 0 for the preview seen in the MOS newsroom or the Sequencer in XPression, artists can define which frame is used as the preview. Now the guess work of is this the right asset, goes away.