Playing videos embedded in a pdf document

I am running Windows 10 with Flash Player (pepper flash) version 22.0.0.209 embedded in Chrome. I am unable to run videos that I embedded in a pdf document that I created in another computer (A) and accessed via a thumb drive on this computer (B).  I get an error message that I should download Flash Player.  I can run the videos in the document on computer A....but not on this computer (B). How can I run the embedded videos in this pdf document?  Thanks.