If you have an Nvidia graphics card, you’ve probably heard of ShadowPlay. It’s a feature that you can enable so that when you press a key bind, it saves the last X amount of minutes to a folder on your PC. It’s constantly recording using a hardware encoder for a limited hit on your GPU, and it’s something that you can’t really get on any other hardware. AMD’s equivalent is ReLive, but it pales in comparison to ShadowPlay and its performance. However, with OBS, you can make your own ShadowPlay that works on any machine… and yes, it even works on Mac.