The download function can be used to save videos in the app. Those videos can be watched without internet connection.
4. A pop-up a message will appear saying 'Download started, downloaded video will be valid for a month'. You can see that the video is downloading as the download icon has changed to a loading circle.
You don't need internet connection to access a downloaded video. You can watch it whenever and wherever you want.
To delete a video from your downloads, click on the little check mark on the right side next to the video. The app will ask you if you want to remove the video from your download. If you do, then click "Remove".