'Setting rewarded video ads to 30 seconds

I have implemented a rewarded video ad in my application but it displays the ad in just 10 seconds. How can i code the program to set the ad to 30 seconds?

I am using gms:play-service:19.0.1

Thanks

android admob-rewardedvideoad

Solution 1:^[1]

I don't think you can do that. You can select which type of ads to show but you can;t set time .I think that depend on advertiser.

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Solution 1	Manjeet deswal

'Setting rewarded video ads to 30 seconds

Solution 1:[1]

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Solution 1:^[1]