Something to consider.
Using Acrobat 9 Pro or Pro Extended you could Insert FLV or H.264 video for direct playback in Adobe Acrobat® and Adobe Reader.
See if you can insert the movie (not as legacy multimedia) into PDF with the Acrobat 9.3.1 Pro or Pro Extended Video Tool.
Viewed with the current dot release of Reader/Acrobat, there should be no security alerts.
Many thanks for your help.
Unfortunately I need to use a url link as the files are to be put up on the web so I need to keep the file sizes as small as possible and although the movie has been compressed down to 4mb if I embed it, the file size then increases dramatically.
Reading through the manual it looks like in version 8 and 9 the enhanced security is built in to protect the end user. So maybe I can’t have it open in full screen as the pop up message to allow you to trust the movie is then hidden as all the menus are hidden once you enable full screen… which is a shame.
Unless you know a work around?
I'm not aware of any work arounds.