Twitch publishes a comprehensive guide in order for you and your team to succeed in broadcasting to the platform. This guide is written using years of best practices and tests optimizing broadcast productions to integrate with Twitch.
To help with measuring and correcting delay, Twitch provides a synchronization test clip that can be used. To effectively use this Clip, play it back through the entire production chain. This is because devices in the production chain add delay. By playing the Clip through a computer/playback deck that goes through the production chain, you can determine the full system delay and adjust accordingly to compensate.
These ingests endpoints are selected for you based on the optimal network paths detected from Twitch to your device.