Many thanks for your reply. I must admit I thought one had to have Powerpoint 13 to be sure of having the video embedded ; but if you say 2010 will do it, I guess it would be worth my while making (or just saving ?) the presentation in Powerpoint 2010 and hoping my recipients will have at least the latter version in order to read it. Will Powerpoint 2010 read mp4 ? If not, which video formats will do ?