Upload videos to D of E website???

I have the same issue and feel your frustration. I was trying to upload a sound file of me playing piano, but apparently it was far too long! (Grrr). I'm afraid I don't know a solution, I'm just going to use pictures instead.

I've have tried so many times to upload a video from my phone onto the D of E website and every time there's some problem like the file type it is isn't recognised by the website and my most recent problem is that the file size it too big, but judging by the length of this video in order for the file size not to be too big the video would have to be 6 seconds or less which seems just pointless even having a video!!!
I'm really at my wits end here, any help would be appreciated. Any ideas on different ways to get it onto the website? Currently I've plugged my phone into the computer and the file type has been MP4. Maybe I could convert it into a different file type and that would upload longer videos?