It's highly unlikely that this will be ever possible. InDesign can create a PDF but has to follow the PDF standard and how Adobe Acrobat and Reader handle media. In recent years, neither the ISO standards organization for PDF nor Adobe have been inclined to add new multimedia features to either PDF or Acrobat/Reader.
Ok, if I cannot link to a youtube video is it possible to post an image of the video and do a hyperlink to that image?
Ok Steve then is it possible to post an image of the video and hyperlink to
I don't understand what you mean!
I create a simple ID file with an hyperlink to the URL of a video on youtube.com (I could create a button with a screenshot of the window of the video too!); I export my ID file in interactive pdf; I open the pdf; I click on the hyperlink and this action simply opens a window in FireFox where the target video begins!
What's your problem?