Monitor industry common video formats

Afternoon work summary, look at the time there are one hours, in the company to monitor for a while, often hear some video format and so on, today look for Niang understand a bit. It's all copied and pasted and recorded here:

Standardized image format QCIF full name Quarter Common intermediate format. QCIF is commonly used in standardized image formats. In the protocol cluster, the standard acquisition resolution of video acquisition equipment is specified. QCIF = 176x144 pixels.
CIF is a commonly used standardized image format (Common intermediate format). In the protocol cluster, the standard acquisition resolution of video acquisition equipment is specified. CIF = 352x288 pixels |
Sd
The so-called SD, "standard definition" in English, is a physical resolution of a video format below 720p. 720p refers to a video with a vertical resolution of 720 lines of progressive scan. Specifically, refers to the resolution in the 400-line VCD, DVD, TV shows and other "SD" video format, that is, standard definition. And the physical resolution of more than 720p is called as HD, (English expression High definition) referred to as HD. On the standard of high definition, there are two internationally recognized: video vertical resolution of more than 720p or 1080i; Video condone ratio is 16:9.

The

  SD and HD
divisions for "HD" and "SD" first come from the video effects you can see. Because of the different bandwidth of image quality and channel transmission, digital TV signal is divided into HDTV (HDTV), SDTV (standard definition TV) and LDTV (ordinary definition TV). Visually, HDTV has the highest specifications, its image quality can reach or close to the level of 35mm widescreen films, it requires video content and display device level resolution of more than 1000 lines, resolution up to 1920x1080. In terms of quality, the resolution of HD is roughly 4 times times the size of a traditional analog TV, and the sharpness of the screen and the color reduction are much better than traditional TVs. The 16:9 widescreen display also brings a wider visual enjoyment. From the audio effect, HD TV shows will support Dolby 5.1-channel surround sound, while HD movie shows will support the Dolby 5.1 True HD specs, which will give us a super shock of hearing enjoyment.
HD Full HD
So-called Full HD, which refers to the physical resolution up to 1920x1080 display (including 1080i and 1080P), where I (interlace) refers to interlaced scanning; P (Progressive) represents progressive scanning, which has a big difference in the fineness of the screen, and 1080P is better than 1080i in quality. The corresponding 720 is referred to as standard HD. Obviously, because of the richer data in the process of transmission, 1080 has more advantages in resolution, especially in large-screen TVs, 1080 ensures clearer picture quality.