<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>7.2. Teletext</title><link rel="stylesheet" href="default.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.75.2"><link rel="home" href="index.html" title="MPlayer - 电影播放器"><link rel="up" href="tv.html" title="第 7 章 TV"><link rel="prev" href="tv-input.html" title="7.1. 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MPlayer skin format"><link rel="subsection" href="tv-teletext.html#tv-teletext-implementation-notes" title="7.2.1. Implementation notes"><link rel="subsection" href="tv-teletext.html#tv-teletext-usage" title="7.2.2. Using teletext"><link rel="subsection" href="tv-teletext.html#tv-teletext-hotkeys" title="7.2.3. Teletext hot keys"></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">7.2. Teletext</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="tv-input.html">上一页</a> </td><th width="60%" align="center">第 7 章 TV</th><td width="20%" align="right"> <a accesskey="n" href="radio.html">下一页</a></td></tr></table><hr></div><div class="sect1" title="7.2. Teletext"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="tv-teletext"></a>7.2. Teletext</h2></div></div></div><p> Teletext is currently available only in <span class="application">MPlayer</span> for v4l and v4l2 drivers. </p><div class="sect2" title="7.2.1. Implementation notes"><div class="titlepage"><div><div><h3 class="title"><a name="tv-teletext-implementation-notes"></a>7.2.1. Implementation notes</h3></div></div></div><p> <span class="application">MPlayer</span> supports regular text, graphics and navigation links. Unfortunately, colored pages are not fully supported yet - all pages are shown as grayscaled. Subtitle pages (also known as Closed Captions) are supported, too. </p><p> <span class="application">MPlayer</span> starts caching all teletext pages upon starting to receive TV input, so you do not need to wait until the requested page is loaded. </p><p> Note: Using teletext with <tt class="option">-vo xv</tt> causes strange colors. </p></div><div class="sect2" title="7.2.2. Using teletext"><div class="titlepage"><div><div><h3 class="title"><a name="tv-teletext-usage"></a>7.2.2. Using teletext</h3></div></div></div><p> To enable teletext decoding you must specify the VBI device to get teletext data from (usually <tt class="filename">/dev/vbi0</tt> for Linux). This can be done by specifying <tt class="option">tdevice</tt> in your configuration file, like shown below: </p><pre class="screen">tv=tdevice=/dev/vbi0</pre><p> </p><p> You might need to specify the teletext language code for your country. To list all available country codes use </p><pre class="screen">tv=tdevice=/dev/vbi0:tlang=<em class="replaceable"><code>-1</code></em></pre><p> Here is an example for Russian: </p><pre class="screen">tv=tdevice=/dev/vbi0:tlang=<em class="replaceable"><code>33</code></em></pre><p> </p><p> </p></div><div class="sect2" title="7.2.3. Teletext hot keys"><div class="titlepage"><div><div><h3 class="title"><a name="tv-teletext-hotkeys"></a>7.2.3. Teletext hot keys</h3></div></div></div><div class="informaltable"><table border="1"><colgroup><col><col></colgroup><thead><tr><th>Key</th><th>Description</th></tr></thead><tbody><tr><td>X</td><td>Switch teletext display on/off</td></tr><tr><td>C</td><td>Cycle through teletext rendering modes (opaque, transparent, inverted opaque, inverted transparent</td></tr><tr><td>Left/Right</td><td>Go to previous/next teletext page</td></tr><tr><td>PageUp/PageDown</td><td>Go to next/previous teletext subpage</td></tr><tr><td>digits</td><td>Enter teletext page number to jump to</td></tr></tbody></table></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="tv-input.html">上一页</a> </td><td width="20%" align="center"><a accesskey="u" href="tv.html">上一级</a></td><td width="40%" align="right"> <a accesskey="n" href="radio.html">下一页</a></td></tr><tr><td width="40%" align="left" valign="top">7.1. TV input </td><td width="20%" align="center"><a accesskey="h" href="index.html">起始页</a></td><td width="40%" align="right" valign="top"> 第 8 章 广播电台</td></tr></table></div></body></html>
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