For those wondering, the following Halo 5: Guardians gameplay was captured on Xbox One X using the built-in Game DVR. The recordings were not altered in post.
For those interested. The built-in Game DVR on Xbox One X records 4K 60fps footage around 25Mbps. For reference, Elgato’s HD60 Pro internal capture card can record up to 1080p 60fps footage at 60Mbps. Elgato’s 4K60fps internal capture card is not available until Nov 21st so I don’t know it’s bitrate.
Also keep in mind YouTube has a not-so-good compression setting. However despite the lower bitrate recording and YouTube’s compression, the footage still looks really good but the games look even better when you’re playing them on a 4K display.