YUV: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| Line 1: | Line 1: | ||
= Planar = | = Planar = | ||
== I420 == | == YUV 4:2:0 (I420/YV12)== | ||
== I420 == | |||
In I420, you have luma "luminance" planes '''''Y''''' and chroma planes '''''U''''', '''''V'''''. | In I420, you have luma "luminance" planes '''''Y''''' and chroma planes '''''U''''', '''''V'''''. | ||
| Line 11: | Line 12: | ||
YV12 is exactly like I420, but with '''U''' and '''V''' order reversed. | YV12 is exactly like I420, but with '''U''' and '''V''' order reversed. | ||
== NV12 == | == NV12 == | ||
Revision as of 20:59, 18 May 2011
Planar
YUV 4:2:0 (I420/YV12)
I420
In I420, you have luma "luminance" planes Y and chroma planes U, V.
In I420, chroma planes (blue and red) are subsampled in both the horizontal and vertical dimensions by a factor of 2.
For a 2x2 group of pixels, you have 4 Y samples and 1 U and 1 V sample.
YV12
YV12 is exactly like I420, but with U and V order reversed.
NV12
In NV12, you have one luma "luminance" planes Y and one plane with U and V data interleaved. NV12 is considered as semiplanar.
In NV12, chroma planes (blue and red) are subsampled in both the horizontal and vertical dimensions by a factor of 2.
For a 2x2 group of pixels, you have 4 Y samples and 1 U and 1 V sample.
NV21
NV21 is like NV12, but with U and V order reversed.
Packed
This page is part of official VLC media player Documentation (User Guide • Streaming HowTo • Hacker Guide • Modules)
Please read the Documentation Editing Guidelines before you edit the documentation
Please read the Documentation Editing Guidelines before you edit the documentation
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.