[sangle]

См. доки.

Maximizing video quality.
By default, new instances of the Video class are 320 pixels wide by 240 pixels high. In order to maximize video quality you should always ensure that your video object matches the same dimensions as the video being returned by the camera object. You can get the camera object's width and height by using the Camera class's width and height properties, you can then set the video object's width and height properties to match the camera objects dimensions, or you can pass the camera's width and height to the Video class's constructor method, as seen in the following snippet: