LED panel control methods and systems

A computer-implemented method for converting received Red-Green-Blue, RGB, video data into a Red-Green-Blue and a Fourth colour, RGBF, LED drive signal is disclosed. The method may comprise receiving RGB video data representative of a video comprising a plurality of frames. Each frame may comprise a plurality of pixels. For each pixel of each frame of the video, the RGB video data may define R, G and B brightness for representing a colour and a brightness of the pixel. The method may further comprise generating a RGBF LED drive signal from the received RGB video data. The RGBF LED drive signal may be configured for driving one or more LED modules comprising a plurality of LED units. Each LED unit may represent a pixel. Each LED unit may comprise a Red LED, a Green LED, a Blue LED, and a Fourth-colour LED that is not the same colour as the Red, Green or Blue LEDs. The generating may further comprise applying a control parameter to adjust a characteristic of the RGBF LED drive signal.