Replace the user-unfriendly Twitter video player with the browser's native video player.
This allows you to:
- seek backward/forward with the ← / → keys
- change the volume with the ↑ / ↓ keys or mouse wheel
- switch full screen with double-click or f key
- access the video's contextual menu
- change the playback speed with the + / - and 0 keys or via the contextual menu