They are all standard display modes of TV, i represents an interlaced scan, and P represents a progressive scan. 480i is a standard NTSC TV display mode, 60Hz frequency, 525 vertical scan lines, 483 visible vertical scanning lines, 4: 3 or 16: 9, is recorded as 480i or 525i. 576i is a standard PAL TV display mode, 50Hz frequency, 625 vertical scan lines, 576 visible vertical scan lines, 4: 3 or 16: 9, 576i or 625i. The 480p is the standard digital TV display mode, 60 Hz frequency, 525 vertical scan lines, 480 visible vertical scan lines, 4: 3 or 16: 9, is recorded as 480P or 525P. Xbox internal actual image resolution 640 * 480. 1080i is the D3 standard digital TV display mode, 60Hz frequency, 1125 vertical scan lines, 1080 vertical scan lines, 16: 9, 1080i or 1125i. Xbox internal actual image resolution 1920 * 1080. 720p is a D4 standard digital TV display mode, 60 Hz frequency, 750 vertical scan lines, 720 visible vertical scan lines, 16: 9, remember to 720P or 750P. Xbox internal actual image resolution 1280 * 720. HDTV standards are high quality video signal standards, 720p, 1080i, 1080p, but currently supporting 480p is also known as supporting HDTV. It is to be noted that although the processing difficulty of the game image is 480i <480p <720p <1080i, it is 480i <480p <1080i <720p for the requirements for television processing capabilities (such as bandwidth). So currently support the 720P TV set by color difference, but support 1080i or 1080i Ready.
