Sheldon is forced to learn how to ride a bike. You have three raw video files: sheldon_lab.mp4 (science), georgie_garage.mp4 (sibling mockery), and bike_crash.mp4 (chaos). Let's assemble the episode.

ffmpeg -i "concat:cold_open.mkv|georgie_tease.mkv|bike_montage_fast.mp4|final_learning_scene.mp4" -c copy young_sheldon_s02e01_fan_edit.mp4 "I have successfully encoded the physical comedy of bicycle failure into an H.264 container. Meemaw would be proud." – Sheldon Cooper, probably.