Uploading a videoclip

I would like to upload a short vodeoclip, about 15-s, 10frames sequence reporting the transit of Io and its shadow, along GRB appearance, on Jupiter surface.
The system seems unapt to accept videos…isn’t it? How could I succeed uploading?
Thank you,

That’s right, you can’t upload video files, but you can upload animated GIF files. All you have to do is convert your video to a GIF file before uploading it.