Drag and drop the file you want to import
Your video will be private until published
Retrieve YouTube URL
To retrieve the URL of a YouTube video:
From YouTube.com, find the video in question.
Click Share under the video.
Copy the link.
You can also copy the video URL from the browser's address bar.
When adding a video from YouTube, make sure that your video is Public and that the Allow embedding box is checked (in the Advanced settings) in the settings of your YouTube video.