H.264 compression

Unlike other video compressions, H.264 works with smaller pixel blocks that are only 4 x 4 pixels in size. This reduces the transformation overhead and the calculation gets by with only a few basic operations: addition, subtraction and binary shift operations.

In a hardware implementation, this leads to a substantial increase in speed. In addition, the small block sizes reduce artifacts caused by compression; these are noise signals caused by lossy compression.

During decoding, a color conversion from the YUV color model to the RGB color model takes place. In addition, a graphic overlay can take place, in which the video display is overlaid with graphics and text.