Restreamers combine different streams and audio commentary into a single stream.
Creating overlays for 4 player restreams - Created by MrEntity
Streamlink - A command-line utility that extracts streams from various services and pipes them into a video player of choice.
Streamlink Batch Video - Workaround for Streamlink
Streamlink Twitch GUI (deprecated) - Created by bastimeyer
General restreaming tutorial - Created by Netara
SpeedGaming restream instructions
Commentators provide narration, context, and insight for race stream viewers.
Tips for Improving Commentary Performance - Created by WhoDat42
Speedgaming Commentary Guidelines
Esports Casting - Created by Ravlin
Quick Guide to Caster Rules & Etiquette - Created by Moxxi
Guide to Interviews (post-race interviews) - Created by Moxxi
Commentary Guide - Created by Cecil
Standards of Commentary Guide - from FF4 Free Enterprise community
Trackers observe and record racers' progress so that viewers can follow along.