To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
Languages
Recent
Show all languages
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

Source Input Format

From Wikipedia, the free encyclopedia

Source Input Format (SIF) defined in MPEG-1, is a video format that was developed to allow the storage and transmission of digital video.[1][2]

  • 625/50 SIF format (PAL/SECAM) has a resolution of 352 × 288 active pixels (half of PAL 704 × 576) [or 360 × 288 active pixels (half of PAL 720 × 576)] and a refresh rate of 25 frames per second.[2]
  • 525/59.94 SIF Format (NTSC) has a resolution of 352 × 240 active pixels (half of NTSC 704 × 480) [or 360 × 240 active pixels (half of NTSC 720 × 480)] and a refresh rate of 29.97 frames per second.[2]

When compared to the CCIR 601 specifications, which defines the appropriate parameters for digital encoding of TV signals, SIF can be seen as being reduced by half in all of height, width, frame-rate, and chrominance. SIF video is known as a constrained parameters bitstream.[3]

On square-pixel displays (e.g., computer screens and many modern televisions) SIF images should be rescaled so that the picture covers a 4:3 area, in order to avoid a "stretched" look. So the computer industry has defined "square-pixel SIF" to be 320 x 240 active pixels (QVGA) or 384 x 288 active pixels, with a refresh rate of whatever the computer is capable of supporting. To reach that the SIF content need to be "expanded" horizontally by 12:11 for PAL (PAR = DAR : SAR = 4/3 : 352/288 = 12/11) and "reduced" horizontally by 10:11 for NTSC (PAR = DAR : SAR = 4/3 : 352/240 = 10/11).

YouTube Encyclopedic

  • 1/3
    Views:
    13 575
    597 956
    470 042
  • Auto-formatting input text content with cleave.js
  • The Basics of MLA In-text Citations | Scribbr 🎓
  • Excel: How to Best Import External Data into Excel & Import data from the Web to Excel

Transcription

See also

References

  1. ^ "Digital S Term Dictionary". JVC Professional. Retrieved 2023-04-18.
  2. ^ a b c Setup of CCIR 601 multi-purpose coding system (PDF). PTT Research. 1991.
  3. ^ "MPEG-1 VIDEO". Berkeley Multimedia Research Center. 2009-04-12. Retrieved 2023-04-18.
This page was last edited on 19 September 2023, at 17:10
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.