Hello hello,
It is me again. I really can't solve this problem, can you help me in a more concrete way ? 1 MB is ridiculous, this is nothing. And it is funny because I changed the options in the admin settings and now it says 5 GB so it should work better. But no, if it is me, the admin, to upload a video, I can upload whatever I want, if it is the students, it is always 1 MB.... so what can I do? Because in the database activity I do not think you can do a live video and upload it. You can simply upload videos already registered on ur computer.
thank you very much again for you kind help 
margherita