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https://github.com/mpv-player/mpv
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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@21748 b3059339-0415-0410-9bf9-f77b7e298cf2
110 lines
3.3 KiB
XML
110 lines
3.3 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<chapter id="radio">
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<title>Radio</title>
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<sect1 id="radio-input" xreflabel="Radio input">
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<title>Radio input</title>
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<para>
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This section is about how to enable listening to radio from
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a V4L-compatible radio tuner. See the man page for a
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description of radio options and keyboard controls.
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</para>
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<!-- ********** -->
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<sect2 id="radio-compilation">
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<title>Compilation</title>
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<procedure>
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<step><para>
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First, you have to recompile MPlayer using <filename>./configure</filename>
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with <option>--enable-radio</option> and (if you want capture support)
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<option>--enable-radio-capture</option>.
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</para></step>
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<step><para>
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Make sure your tuner works with another radio software in Linux, for
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example <application>XawTV</application>.
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</para></step>
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</procedure>
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</sect2>
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<!-- ********** -->
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<sect2 id="radio-tips">
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<title>Usage tips</title>
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<para>
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The full listing of the options is available in the manual page.
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Here are just a few tips:
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<itemizedlist>
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<listitem><para>
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Use the <option>channels</option> option. An example:
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<screen>-radio channels=104.4-Sibir,103.9-Maximum</screen>
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Explanation: With this option, only the 104.4 and 103.9 radio stations
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will be usable. There will be a nice OSD text upon channel switching,
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displaying the channel's name. Spaces in the channel name must be
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replaced by the "_" character.
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</para></listitem>
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<listitem><para>
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There are several ways of capturing audio. You can grab the sound either using
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your sound card via an external cable connection between video card and
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line-in, or using the built-in ADC in the saa7134 chip. In the latter case,
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you have to load the <systemitem>saa7134-alsa</systemitem> or
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<systemitem>saa7134-oss</systemitem> driver.
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</para></listitem>
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<listitem><para>
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<application>MEncoder</application> cannot be used for audio capture,
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because it requires a video stream to work. So your can either use
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<application>arecord</application> from ALSA project or
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use <option>-ao pcm:file=file.wav</option>. In the latter case you
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will not hear any sound (unless you are using a line-in cable and
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have switched line-in mute off).
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</para></listitem>
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</itemizedlist>
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</para>
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</sect2>
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<!-- ********** -->
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<sect2 id="radio-examples">
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<title>Examples</title>
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<informalexample><para>
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Input from standard V4L (using line-in cable, capture switched off):
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<screen>mplayer radio://104.4</screen>
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</para></informalexample>
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<informalexample><para>
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Input from standard V4L (using line-in cable, capture switched off,
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V4Lv1 interface):
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<screen>mplayer -radio driver=v4l radio://104.4</screen>
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</para></informalexample>
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<informalexample><para>
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Playing second channel from channel list:
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<screen>mplayer -radio channels=104.4=Sibir,103.9=Maximm radio://2</screen>
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</para></informalexample>
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<informalexample>
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<para>
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Passing sound over the PCI bus from the radio card's internal ADC.
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In this example the tuner is used as a second sound card
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(ALSA device hw:1,0). For saa7134-based cards either the
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saa7134-alsa or saa7134-oss module must be loaded.
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<screen>
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mplayer -rawaudio rate=32000 radio://2/capture \
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-radio adevice=hw=1.0:arate=32000:channels=104.4=Sibir,103.9=Maximm
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</screen>
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<note><para>When using ALSA device names colons must be replaced
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by equal signs, commas by periods.
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</para></note>
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</para>
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</informalexample>
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</sect2>
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</sect1>
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</chapter>
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