TAS Explained: Super Mario Bros. 3 in 0.2 seconds

Have you ever wondered how the shortest TAS to be published on TASVideos works? https://tasvideos.org/4567M In this video I'll be explaining how subframe inputs are used to beat SMB3 in a little over 0.2 seconds. Join my discord! https://discord.gg/SbhTn6nX35 Also, if you wish to support me, check out my game Fantastic Fist! https://store.steampowered.com/app/2119470/Fantastic_Fist/ All the background music in this video is from the Fantastic Fist soundtrack. Chapters: 0:00 Introduction 0:21 What is a TAS? 1:23 The Wrong Warp 2:39 ACE Explained 4:28 Subframe Inputs 1: How it Started 5:32 Subframe Inputs 2: DPCM Audio Bug 8:04 Subframe Inputs 3: DPCM Audio Bug Workaround 9:17 Subframe Inputs 4: DPCM Audio Bug Workaround Exploit 9:43 The IRQ 11:52 What Bytes Can We Manipulate? 13:33 The Goals 14:06 The SGDQ 2016 TAS 16:00 The Run 18:08 Conclusion