useVideoConfig()
With this hook, you can retrieve some info about the context of the video that you are making.
Namely, useVideoConfig will return an object with the following properties:
width: The width of the composition in pixels.height: The height of the composition in pixels.fps: The frame rate of the composition, in frames per seconds.durationInFramesThe duration of the composition in frames.
Remember that you control these properties by passing them as props to <Composition>. Read the page about the fundamentals to learn how to define a composition.