My video stops all the time when i stream it using airplay.

Hi Rajkumaran,

Welcome to Apple Support Communities.

The information in the article below should help you resolve the AirPlay playback issue on your iPad Air.

Get help using AirPlay and AirPlay Mirroring on your iPhone, iPad, or iPod touch - Apple Support

If your playback is interrupted, or you have network lag

You might notice these issues if you have a weak Wi-Fi signal or interference from a different device, like a microwave or baby monitor. Try these steps:

1. Make sure that you're using the recommended settings for your Wi-Fi router.
2. Move or turn off other devices that might cause interference.
3. Try connecting your Apple TV directly to the router using an Ethernet cable instead of Wi-Fi.

Some apps might stop AirPlay when you lock your device or put your device to sleep.

Get more help

Get help using AirPlay with iTunes.

Cheers.