Size of this preview: 800 × 399 pixels. Other resolutions: 320 × 159 pixels | 640 × 319 pixels | 1,236 × 616 pixels.
Original file (1,236 × 616 pixels, file size: 212 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: This image shows the difference between four subsampling schemes. Note how similar the color images appear. The lower row shows the resolution of the color information. All four images are from the same High Definition 1920x1080 pixel video frame, reduced to Standard Definition using different codecs. The 4:1:1 image is slightly smaller, since the coded image is in NTSC resolution, 720x480. The others are from PAL resolution images, 720x576. Excerpts enlarged to 200% here, when viewed in full size. (Note that pixel aspect ratios are different in NTSC and PAL, thus both can have 720 pixels per line, and still be 4:3). |
| Date | |
| Source | Own work |
| Author | Janke |
Licensing
Janke at English Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Janke at English Wikipedia
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Original upload log
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 2010-10-19 16:42 | 1236×616× (231806 bytes) | Janke | {{Information |Description = |Source = I (~~~) created this work entirely by myself. |Date = ~~~~~ |Author = ~~~ |other_versions = }} |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:33, 27 April 2017 | | 1,236 × 616 (212 KB) | Gnash | Optimized file size. |
| 05:08, 10 May 2016 |  | 1,236 × 616 (226 KB) | NeonMerlin | Transferred from en.wikipedia |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on en.wikiversity.org
- Usage on ja.wikipedia.org
- Usage on pl.wikipedia.org
- Usage on vi.wikipedia.org
