You may be planning to offer a video link to your recipients of your email campaign and may have wondered the best way to do this?
Firstly prepare an image showing the video play action, preferably with the play button showing.
Then copy the url of your hosted video (e.g. a YouTube url) behind the image you are adding in to your image box. Paste the URL into the URL field which is just beneath the Step 1 within your image browser.
Then when you have uploaded and selected that image and it is inserted into your email campaign image box, your url will be embedded behind the image. Then your recipients of your email campaign will be able to click on the image and be taken to that host URL and then play the video.