帧率,帧的概念（Frame rate, frame concept）.docVIP

帧率,帧的概念（Frame rate, frame concept） Frame rate (Frame rate) frame rate is used to measure the number of measurement display. The unit of measurement for FPS (Frames per Second, Jane: FPS) or Hertz (Hz). Its mostly used for video production and video games. Because of the special physiological structure of the human eye, see if the picture frame rate higher than 16 of the time, will be considered to be coherent, this phenomenon is called visual. Thats why the film is filmed in one cell and then played quickly. For games, in general, the first person shooter focuses on FPS, and if FPS30 does, the game looks incoherent. So theres an interesting saying: FPS means FPS (FPS). The number of frames per second (FPS) or a graphical representation of processor field frame rate per second can update the. High frame rates allow for smoother, more realistic animations. Generally speaking 30fps is acceptable, but the performance will be improved to 60fps can significantly enhance the interactivity and realism, but generally more than 75fps is not easy to perceive general fluency improved significantly. If the frame rate exceeds the screen refresh rate, it will only waste graphics processing ability, because the monitor can not be updated at such a fast rate that the frame rate over the refresh rate will be wasted. image frame [edit this paragraph] image frame H.264 is a concept of innovation, it has absolutely no idea I frame, break the normal procedure, P frame, B frame, there is no concept of IDR frame. For H.264, some of the concepts are sorted from large to small: sequences, images, slices, groups, slices, NALU, macro blocks, sub macroblocks, blocks, pixels. Here are a few points worth noting: (1) in the H.264 protocol, the image is a set concept, the top field, the low field and the frame can all be called images. (later, when the image concept is used, the collection concept is not repeated). Therefore, we can know that, for the H.264 protocol, the call, we are familiar with