When Flash Player was still being supported, using LaTeX Beamer for presentations, one was able to compile a PDF with embedded videos/gifs in it (using \includemedia[]). The videos were interactive at least with the simple buttons such as play/pause/repeat. Now Flash Player is no longer supported, and even though the PDF is the same, and you can even continue to compile such PDFs, I can find no way of playing the videos. In Adobe Reader or Adobe Acrobat, if one tries to click on the embedded video to play it, one gets the following message: