Blu-ray is the most advanced high-capacity disc format today. The capacity of the Blu-ray Disc can generally reach the 25-50G, this huge capacity to bring the convenience for storage of HD movies. In general the resolution of the Blu-ray movies is up to 1080P.

1080P is a video display format, it is the highest level of high-definition digital TV format standard developed by the American Film and Television Engineers (SMPTE), and it is a perfect fusion of digital cinema imaging technology and computer technology.

Its effective display format: 1920 × 1080, pixel count of 2,073,600. The number 1080 means 1080 horizontal scan lines vertically, and the letter p means Progressive Scan.

Referred to 1080p, we have to talk about 720p and 1080i.

720p: 720P is a high-grade high-definition digital TV format standard developed by the American Film and Television Engineers (SMPTE). It is a progressive scan of 1280 × 720 resolution display format and it is the integration of digital cinema imaging technology and computer technology.

1080i: The 1080i is a high-definition television signal format. Among them, the “1080” means the vertical direction there are 1080 horizontal scan lines, “i” means interlaced video display. During playback, it scans the odd number of vertical screen, and then scan double number of vertical screen, it only need half bandwidth of 1080p.

In fact, 720P, 1080i and 1080P already have no real meaning for HD show, especially for flat-panel TVs. What needs the concept of 720P, 1080i and 1080P is high-definition camera, but for the television audience, what camera is used exercises no effect on their visual effect.