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Original file (1,236 × 616 pixels, file size: 212 KB, MIME type: image/jpeg)

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:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Janke at English Wikipedia
You are free:
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  • 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 = }}

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19 October 2010

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341fd6d0d55636e827ef38a8c7e1afb409ed7c85

216,812 byte

616 pixel

1,236 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current20:33, 27 April 2017Thumbnail for version as of 20:33, 27 April 20171,236 × 616 (212 KB)GnashOptimized file size.
05:08, 10 May 2016Thumbnail for version as of 05:08, 10 May 20161,236 × 616 (226 KB)NeonMerlinTransferred from en.wikipedia

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