Deadness has a built-in gameplay capturing feature called cinematic mode that allows let's players record the game footage in a higher quality.

In order to access this feature, the player has to press the C key while playing one of the levels. The screen will appear less pixelated with a few options available.

If the cinematic mode is enabled, press TAB key to hide/show user interface on the left side of the screen, so your screen is ready to be recorder.

All the other advanced features in the cinematic mode are described on the left side of the screen.