How set MoviePosterType ?

Thanks Jump_Over for your reply

I try as you told

#target indesign

var myDocument = app.documents.add();

var myPage = myDocument.pages.item(0);

var myFrame = myPage.rectangles.add({geometricBounds:[72, 72, 288, 288]});  

myFrame.place(File("/c/mentors_es.flv"));

myFrame.movies[0].moviePosterType=1299216505;  //For PROXY_IMAGE

myFrame.movies[0].posterFile = File("/c/image.jpg");

But it not work

I also try

myFrame.movies[0].moviePosterType=1852796517; //for NONE

But it not set. Always take default value "From Current Frame".

I am not understand why it is not work ?

Thanks.