To increase your video views in a short time then, you can
Create great content for your video.
Your video title should be attractive.
Make an eye-catching thumbnail.
Promote your video on top social media sites.
Encourage your audience to subscribe to your channel.
If your video length is 60 minute then your video get 4000 watch time. So there's going to be some all kinds of watchers in it within 0-60 minutes. Some must have seen the whole video, some have seen 5 minutes. So YouTube counts the total watching time minute.