How to watch RoyalAPI battle replays? How "Stats Royale" record top player and grand challenge replays and post them on YouTube?

I found “Battle Replays” feature very helpful on RoyalAPI site. But are there anyways or Are there any softwares to play and watch these replays?
How Stats Royale record top player’s video, Grand challenge videos and post them on youtube?

At the moment we can’t offer video replays.