I want to speedrun some games for old consoles, but I don't have the original hardware or games. Im wondering if I can use emulators to play these games for speedruns?

How do I time a run? I don't see Kosmic pressing a button to start and end runs. Is there a software I can use? If so, what is it?

Speedrunning

Need help setting up your stream, or recording your runs? This is the place to ask.

Streaming / Recording / Equipment

Undertale