Download https://www.youtube.com/watch?v=FtutLA63Cp8 in 360p and save it to "bad-apple.mp4".
Required libraries: SDL2, FFMpeg libraries
Compile with: -Wall -pedantic -O2 -pthread -lSDL2 -lavcodec-60 -lavutil-58 -lavformat-60.
space: pause/unpause
m: toggle stereogram/normal mode
→/←: increase/decrease eye distance
↑/↓: increase/decrease depth