movie will not play in a pdf file

I'm using Windows 10 (64 bit).  I cannot play videos/slide shows/movies embedded in PDF files.  (The two pdfs I have were made in 2013). I get a message "To view the Flash technology content in this PDF file, please install the required version of Flash Player." I am opening the pdfs in Adobe Acrobat Reader, not Microsoft Edge.  I have the most recent Windows 10 Flash Player which is part of Chrome.  It is enabled and tests as working.  The version of Flash Player I have is 22.00.0.192.  I read an article in PC Prime saying I need a standalone Flash Player, not the one embedded in Chrome, but I don't really understand what that means or what to do a about it.  I'd appreciate any help anyone has.