> This likely has everything to do with YouTube using VP9 vs. Twitch using h.264. There's nothing inherent about VP9 over h.264 that will make it look better.

> This likely has everything to do with YouTube using VP9 vs. Twitch using h.264. There's nothing inherent about VP9 over h.264 that will make it look better. Especially when delivering a downscaled stream (480p when the source is 1080p or 4K) the pre-encode processing (scaling, filtering, etc) is going to matter more than the codec in most cases. Just in downscaling video, a Lanczos filter vs bicubic makes a lot of difference even using the same codec, profile, and bitrate.