1080i
1080i is the shorthand name for a category of video modes. The number 1080 stands for 1080 lines of
vertical resolution, while the letter i stands for interlaced or non-progressive scan. 1080i is considered
to be an HDTV video mode. The term usually assumes a widescreen aspect ratio of 16:9, implying a horizontal
resolution of 1920 pixels and a frame resolution of 1920 กม 1080 or about 2.07 million pixels,
and a field resolution of 1920 กม 1080 / 2 (because it's interlaced) or about 1.04 million pixels.
The field rate (not the frame rate) in hertz can be either implied by the context or specified after the letter i.
The two field rates in common use are 50 and 60 Hz, with the former (1080i50) generally being used in
traditional PAL and SECAM countries (Europe, Australia, much of Asia, Africa), the latter (1080i60) in
traditional NTSC countries (e.g. United States, Canada and Japan). Both variants can be transported by
both major digital television formats, ATSC and DVB.
1080p
1080p is the shorthand name for a category of video modes. The number 1080 represents 1,080 lines of
vertical resolution[1], while the letter p stands for progressive scan or non-interlaced.
1080p is considered an HDTV video mode. The term usually assumes a widescreen aspect ratio of 16:9,
implying a horizontal (display) resolution of 1920 dots across and a frame resolution of 1920 กม 1080
or over two million pixels. The frame rate in hertz can be either implied by the context or specified
after the letter p (such as 1080p30, meaning 30 frames per second).
16:9
Aspect ratio most commonly known as widescreen or letterbox. It is wider than the standard 4:3 aspect ratio.
16:9 supporters state that the wider picture corresponds much better to the human visual field than the
almost square 4:3.
2:2 pulldown
The process of transferring 24-frame-per-second film to video by repeating each film frame as two video fields.
When 24-fps film is converted via 2:2 pulldown to 25-fps 625/50 PAL video, the film runs 4 percent faster than normal.
2:3 pulldown
The process of converting 24-frame-per-second film to video by repeating one film frame as three fields,
then the next film frame as two fields
3:2 pulldown
An uncommon variation of 2-3 pulldown, where the first film frame is repeated for 3 fields instead of two.
Most people mean 2:3 pulldown when they say 3:2 pulldown.
3GP
The mpeg4 based video format used in mobile terminals, like cell phones.
3ivX
3ivx is an MPEG-4 toolkit that supports MPEG-4 Video, MPEG-4 Audio and the MP4 File Format.
480p
480p is the shorthand name for a video mode. The p stands for progressive scan,
i.e. non-interlaced, while the 480 denotes a vertical resolution of 480 lines,
usually with a horizontal resolution of 854 pixels and a 16:9 aspect ratio on high-definition television (HDTV),
or 640 pixels and 4:3 aspect ratio on standard-definition television (SDTV).
5.1 Audio
In contrast to the Stereo sound system and conventional Surround Systems, this sound system offers
five separate full band audio signals: Left, middle, right, rear left, rear right. An additional subwoofer (LFE) channel
is also provided.
525/60
The scanning system of 525 lines per frame and 60 interlaced fields (30 frames) per second. Used by the
NTSC television standard.
625/50
The scanning system of 625 lines per frame and 50 interlaced fields (25 frames) per second.
Used by PAL and SECAM television standards.
720p
720p is the shorthand name for a category of HDTV video modes. The number 720 stands for 720 lines
of vertical display resolution, while the letter p stands for progressive scan or non-interlaced.
|
