oggvorbis.contexts.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Context options</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="oggvorbis.constants.html">Predefined Constants</a></div> <div class="next" style="text-align: right; float: right;"><a href="oggvorbis.examples.html">Examples</a></div> <div class="up"><a href="book.oggvorbis.html">oggvorbis</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div> <h1>Context options</h1> <table border="5"> <caption><b>OGG/Vorbis tuning options</b></caption> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Option</th> <th colspan="1">Definition</th> <th colspan="1">Relevance</th> <th colspan="1">Default</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">pcm_mode</td> <td colspan="1" rowspan="1" align="left">PCM byte encoding used. See constants below.</td> <td colspan="1" rowspan="1" align="left">Read / Write</td> <td colspan="1" rowspan="1" align="left"><b><tt>OGGVORBIS_PCM_S16_LE</tt></b></td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">rate</td> <td colspan="1" rowspan="1" align="left">PCM Sampling rate. Measured in Hz.</td> <td colspan="1" rowspan="1" align="left">Write only</td> <td colspan="1" rowspan="1" align="left"><b><tt>44100</tt></b></td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">bitrate</td> <td colspan="1" rowspan="1" align="left"> Vorbis Average Bitrate Encoding / Variable Bitrate Encoding. Measured in bps (ABR) or Quality level (VBR: 0.0 to 1.0). 128000 ABR is rough equal to 0.4 VBR. </td> <td colspan="1" rowspan="1" align="left">Write only</td> <td colspan="1" rowspan="1" align="left"><b><tt>128000</tt></b></td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">channels</td> <td colspan="1" rowspan="1" align="left">Number of PCM channels. 1 == Mono, 2 == Stereo.</td> <td colspan="1" rowspan="1" align="left">Write only</td> <td colspan="1" rowspan="1" align="left"><b><tt>2</tt></b></td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">serialno</td> <td colspan="1" rowspan="1" align="left"> Serial Number of stream within file. Must be unique within file. Because of the potential to select a duplicate serial number within a chained file, make efforts to manually assign unique numbers when encoding. </td> <td colspan="1" rowspan="1" align="left">Write only</td> <td colspan="1" rowspan="1" align="left"><em class="emphasis">Random</em></td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">comments</td> <td colspan="1" rowspan="1" align="left"> Associative array of file comments. Will be translated to <i>strtoupper($name) . "=$value"</i>. Note: This context option is not available in oggvorbis-0.1 </td> <td colspan="1" rowspan="1" align="left">Write only</td> <td colspan="1" rowspan="1" align="left"><b><tt>array('ENCODER' => 'PHP/OggVorbis, http://pear.php.net/oggvorbis')</tt></b></td> </tr> </tbody> </colgroup> </table></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="oggvorbis.constants.html">Predefined Constants</a></div> <div class="next" style="text-align: right; float: right;"><a href="oggvorbis.examples.html">Examples</a></div> <div class="up"><a href="book.oggvorbis.html">oggvorbis</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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