I would like to show a video on my website and I know that it would never be 100% guaranteed that the viewer could not download the video from my link.
However, would there be any method so that I can make them difficult to do so without using Flash? Is it possible using HTML5 or some other way?
Whatever shown to the user through HTML/JS/CSS cannot be made un-copyable!
And the videos you are talking about, understand how it works:
It gets downloaded to user’s pc, and then it is run.
so there is no way without getting this downloaded to user’s pc.