You can delete videos on the Photos and Videos page. I took a look at your account and the video in question is located in the second of three "Family Photos" albums.
To delete, click on the album, find the video and then click on the MORE button. You'll find the delete link there.
I deleted the farting baby video in my computer program but it's still showing up on the website. I don't even know how it got there...I certainly did not do it. Are you able to delete it for me?
I removed it for you.
Noam \ MyHeritage Team.