The wifi on my iPad mini keeps on disconnecting while playing videos.

so here is the issue.. I think ever since I have got the iPad mini the wifi just randomly keeps getting disconnected whenever I watch videos. Does not happen that frequently but whenever it does, it's quite frustrating coz it's not just iPad mini but all my devices lose wifi connection after that. And then I hv to try and switch on and off the wifi again and again On on the mini till it catches my wifi connection. Kindly help with this issue !!