As I've recently been considering a switch from YT to Twitch, I kept in mind that YouTube Frame Timer, which is very useful for retaining speedruns uploaded to YouTube, may not work on videos published on Twitch. So I have to think about the potential frame timer that'd work on Twitch videos. So what could be the possible equivalent of YouTube Frame Timer for Twitch videos? It'd be great if at least such one existed since I don't really want to download the video just to retime the speedrun.

Better Speedrun Timer (noobjsperson.github.io)

This should work for twitch videos

Oh, thanks for that suggestion.