Since we launched YouTube offline in 2014, we’ve seen you bid bye bye to the buffering wheel and take your favorite videos offline to enjoy in areas of low or no internet connectivity. Thanks to this popular feature, you’ve effectively saved money by watching your favourite videos many times over without a data connection.
We’re always working on ways to make the YouTube offline experience even better. Many mobile operators already offer discounted data and promotions to their subscribers, for the Internet during late night hours. Today, we’re beginning to roll out a feature called Smart Offline on YouTube that lets you takes advantage of these cheaper data rates as offered by your mobile operator, without requiring you to stay up late at night.
Here’s how it works: when you tap on the familiar grey arrow 
to take a video offline, a prompt will appear, giving you the option to select “Save overnight” using your mobile operator’s discounted night data plan. When you select it, the YouTube app will smartly schedule your video to be offlined after peak hours that night. When you wake up the next morning, your videos will be ready for you to watch offline and on the go, with no buffering.
to take a video offline, a prompt will appear, giving you the option to select “Save overnight” using your mobile operator’s discounted night data plan. When you select it, the YouTube app will smartly schedule your video to be offlined after peak hours that night. When you wake up the next morning, your videos will be ready for you to watch offline and on the go, with no buffering.This feature is gradually rolling out to Airtel and Telenor subscribers today, and we hope to bring it to all users in India eventually. You will need to be connected to your carrier’s data network to see this feature (it will not work on Wifi networks), and make sure you’ve updated your YouTube app to the latest version.
We hope you like this more affordable and convenient way to take videos offline, and continue watching YouTube whenever you like, buffer-free.
Posted by Jessica Xu, Product Manager, YouTube who recently watched TUNG LAK Video Song | SARBJIT | Randeep Hooda, Aishwarya Rai Bachchan, Richa Chadda | T-Series offline