How do I play Video in iOS Safari, which was playing but got paused due to switching to a different app?

I am playing a video in iOS safari, not muted. Now when i switch to another app or tab, the video pauses which is understandable, but when switching back to the app and tab, I want to resume that video, How can I achieve that? Is there an event fired when coming to this tab from another tab in iOS safari OR when coming to this tab/app from another app?

Source: Ios Questions