system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it okay to stream or upload yourself playing/watching a game, but not a movie?

How is the creative content different? Why is one illegal but the other not? I didn't pay to watch or "consume" the content of the games on twitch, at all.
gpt
Because the game involves sufficient input from the player to make it happen that it is considered a 'transformative work'. Films don't have that interactivity to make them go.

A player's input is absolutely essential to a game in such a way that their gameplay is considered their own work. It's active whereas streaming a film is just passive.