How to get Videos from flicker using api?

I have developed a mobile application using ionic framework. In this
application I am fetching the images from and showing
them on a page in my application by using the API provided by flickr.
Now I am trying to fetch the videos from using their API
but I am not able to get the source of the video and hence not able to
show that on my application.
Please suggest if anybody has any idea about this.