A 10-minute video would be a huge file just to upload as an attachment. You will need to set up a free youtube account and then upload your video to youtube first. Then, whenever you need to add a video to your post, you just copy and paste the URL of the youtube page that the video is on right into the body of your post. After you submit that post, our system will recognize that there's a youtube link in it, and will do some magic on the backend to embed the video right into your post.