There is a new feature by DTube to upload video by Url, once you place Url it picks all the content automatically. I was just testing with one of my Youtube video but It was not uploading the content or showing as posted, even today when i login to my D.tube channel page there is no video. I wish if Steemit and D.tube can help by providing DELETE option to make things easier or let me know how to correct this. Next, the link provided in above comment (More information and tips on sharing content) is showing 404, will search the details and learn more on sharing content.