1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>V4L2_PIX_FMT_Y41P ('Y41P')</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="LINUX MEDIA INFRASTRUCTURE API"><link rel="up" href="yuv-formats.html" title="YUV Formats"><link rel="prev" href="V4L2-PIX-FMT-VYUY.html" title="V4L2_PIX_FMT_VYUY ('VYUY')"><link rel="next" href="re24.html" title="V4L2_PIX_FMT_YVU420 ('YV12'), V4L2_PIX_FMT_YUV420 ('YU12')"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">V4L2_PIX_FMT_Y41P ('Y41P')</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="V4L2-PIX-FMT-VYUY.html">Prev</a> </td><th width="60%" align="center">YUV Formats</th><td width="20%" align="right"> <a accesskey="n" href="re24.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="V4L2-PIX-FMT-Y41P"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p><code class="constant">V4L2_PIX_FMT_Y41P</code> — Format with ¼ horizontal chroma 2resolution, also known as YUV 4:1:1</p></div><div class="refsect1"><a name="idp1102009180"></a><h2>Description</h2><p>In this format each 12 bytes is eight pixels. In the 3twelve bytes are two CbCr pairs and eight Y's. The first CbCr pair 4goes with the first four Y's, and the second CbCr pair goes with the 5other four Y's. The Cb and Cr components have one fourth the 6horizontal resolution of the Y component.</p><p>Do not confuse this format with <a class="link" href="V4L2-PIX-FMT-YUV411P.html" title="V4L2_PIX_FMT_YUV411P ('411P')"><code class="constant">V4L2_PIX_FMT_YUV411P</code></a>. 7Y41P is derived from "YUV 4:1:1 <span class="emphasis"><em>packed</em></span>", while 8YUV411P stands for "YUV 4:1:1 <span class="emphasis"><em>planar</em></span>".</p><div class="example"><a name="idp1102076364"></a><p class="title"><b>Example 2.20. <code class="constant">V4L2_PIX_FMT_Y41P</code> 8 × 4 9pixel image</b></p><div class="example-contents"><p><b>Byte Order. </b>Each cell is one byte. 10 </p><div class="informaltable"><table border="0"><colgroup><col align="left"><col><col><col><col><col><col><col><col><col><col><col><col></colgroup><tbody valign="top"><tr><td align="left" valign="top">start + 0:</td><td align="center" valign="top">Cb<sub>00</sub></td><td align="center" valign="top">Y'<sub>00</sub></td><td align="center" valign="top">Cr<sub>00</sub></td><td align="center" valign="top">Y'<sub>01</sub></td><td align="center" valign="top">Cb<sub>01</sub></td><td align="center" valign="top">Y'<sub>02</sub></td><td align="center" valign="top">Cr<sub>01</sub></td><td align="center" valign="top">Y'<sub>03</sub></td><td align="center" valign="top">Y'<sub>04</sub></td><td align="center" valign="top">Y'<sub>05</sub></td><td align="center" valign="top">Y'<sub>06</sub></td><td align="center" valign="top">Y'<sub>07</sub></td></tr><tr><td align="left" valign="top">start + 12:</td><td align="center" valign="top">Cb<sub>10</sub></td><td align="center" valign="top">Y'<sub>10</sub></td><td align="center" valign="top">Cr<sub>10</sub></td><td align="center" valign="top">Y'<sub>11</sub></td><td align="center" valign="top">Cb<sub>11</sub></td><td align="center" valign="top">Y'<sub>12</sub></td><td align="center" valign="top">Cr<sub>11</sub></td><td align="center" valign="top">Y'<sub>13</sub></td><td align="center" valign="top">Y'<sub>14</sub></td><td align="center" valign="top">Y'<sub>15</sub></td><td align="center" valign="top">Y'<sub>16</sub></td><td align="center" valign="top">Y'<sub>17</sub></td></tr><tr><td align="left" valign="top">start + 24:</td><td align="center" valign="top">Cb<sub>20</sub></td><td align="center" valign="top">Y'<sub>20</sub></td><td align="center" valign="top">Cr<sub>20</sub></td><td align="center" valign="top">Y'<sub>21</sub></td><td align="center" valign="top">Cb<sub>21</sub></td><td align="center" valign="top">Y'<sub>22</sub></td><td align="center" valign="top">Cr<sub>21</sub></td><td align="center" valign="top">Y'<sub>23</sub></td><td align="center" valign="top">Y'<sub>24</sub></td><td align="center" valign="top">Y'<sub>25</sub></td><td align="center" valign="top">Y'<sub>26</sub></td><td align="center" valign="top">Y'<sub>27</sub></td></tr><tr><td align="left" valign="top">start + 36:</td><td align="center" valign="top">Cb<sub>30</sub></td><td align="center" valign="top">Y'<sub>30</sub></td><td align="center" valign="top">Cr<sub>30</sub></td><td align="center" valign="top">Y'<sub>31</sub></td><td align="center" valign="top">Cb<sub>31</sub></td><td align="center" valign="top">Y'<sub>32</sub></td><td align="center" valign="top">Cr<sub>31</sub></td><td align="center" valign="top">Y'<sub>33</sub></td><td align="center" valign="top">Y'<sub>34</sub></td><td align="center" valign="top">Y'<sub>35</sub></td><td align="center" valign="top">Y'<sub>36</sub></td><td align="center" valign="top">Y'<sub>37</sub></td></tr></tbody></table></div><p><b>Color Sample Location. </b> 11 </p><div class="informaltable"><table border="0"><colgroup><col><col><col><col><col><col><col><col><col><col><col><col><col><col><col></colgroup><tbody valign="top"><tr><td align="center" valign="top"> </td><td align="center" valign="top">0</td><td align="center" valign="top"> </td><td align="center" valign="top">1</td><td align="center" valign="top"> </td><td align="center" valign="top">2</td><td align="center" valign="top"> </td><td align="center" valign="top">3</td><td align="center" valign="top"> </td><td align="center" valign="top">4</td><td align="center" valign="top"> </td><td align="center" valign="top">5</td><td align="center" valign="top"> </td><td align="center" valign="top">6</td><td align="center" valign="top"> </td><td align="center" valign="top">7</td></tr><tr><td align="center" valign="top">0</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td></tr><tr><td align="center" valign="top">1</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td></tr><tr><td align="center" valign="top">2</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td></tr><tr><td align="center" valign="top">3</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td><td align="center" valign="top">C</td><td align="center" valign="top">Y</td><td align="center" valign="top"> </td><td align="center" valign="top">Y</td></tr></tbody></table></div><p> 12 </p></div></div><br class="example-break"></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="V4L2-PIX-FMT-VYUY.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="yuv-formats.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re24.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">V4L2_PIX_FMT_VYUY ('VYUY') </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> V4L2_PIX_FMT_YVU420 ('YV12'), V4L2_PIX_FMT_YUV420 ('YU12')</td></tr></table></div></body></html> 13