S5 Samsung Galaxy Lost

Hi EveryONE i urgently need help my Samsung S5 was stolen from me on a night out in galway for the races on the 1st August it was white in a black otterbox I just about accepted this when i realised that i have a very important video i NEED BACK... a friend was charged with Drink Driving and i had security fotage on my phone showing he was innocent and someone else was driving... The pub no longer have the viedo on their system... I NEED THIS BACK ITS VERY IMPORTANT. Can anyone please help me. ????