1159b3361Sopenharmony_ci<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 2159b3361Sopenharmony_ci "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 3159b3361Sopenharmony_ci<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 4159b3361Sopenharmony_ci <head> 5159b3361Sopenharmony_ci <meta name="generator" content="PSPad editor, www.pspad.com" /> 6159b3361Sopenharmony_ci <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> 7159b3361Sopenharmony_ci <link rel="stylesheet" type="text/css" href="styles/lame.css" /> 8159b3361Sopenharmony_ci <title>Usage of the commandline encoder</title> 9159b3361Sopenharmony_ci </head> 10159b3361Sopenharmony_ci <body> 11159b3361Sopenharmony_ci<div id="menu"> 12159b3361Sopenharmony_ci <ul> 13159b3361Sopenharmony_ci <li><a href="index.html">Index page</a></li> 14159b3361Sopenharmony_ci <li><a href="about.html">About LAME</a></li> 15159b3361Sopenharmony_ci <li><a href="introduction.html">Intro to encoding</a></li> 16159b3361Sopenharmony_ci <li><a style="border: 0" href="usage.html">Usage of LAME</a> 17159b3361Sopenharmony_ci <div id="submenu"> 18159b3361Sopenharmony_ci <ul> 19159b3361Sopenharmony_ci <li><a href="usage.html">Common switches</a></li> 20159b3361Sopenharmony_ci <li><a style="border: 0" href="detailed.html">Detailed Settings</a></li> 21159b3361Sopenharmony_ci </ul> 22159b3361Sopenharmony_ci </div> 23159b3361Sopenharmony_ci </li> 24159b3361Sopenharmony_ci <li><a href="history.html">Version history</a></li> 25159b3361Sopenharmony_ci <li><a href="contributors.html">Coders of LAME</a></li> 26159b3361Sopenharmony_ci <li><a href="contact.html">Contact LAME</a></li> 27159b3361Sopenharmony_ci <li><a style="border: 0" href="links.html">LAME links</a></li> 28159b3361Sopenharmony_ci </ul> 29159b3361Sopenharmony_ci</div> 30159b3361Sopenharmony_ci<div id="container"> 31159b3361Sopenharmony_ci<div id="content"> 32159b3361Sopenharmony_ci <div align="center"> 33159b3361Sopenharmony_ci <img src="images/logo.gif" width="358" height="231" alt="LAME Official Logo" /> 34159b3361Sopenharmony_ci <h2 class="hilight">Common and recommended switches</h2> 35159b3361Sopenharmony_ci </div> 36159b3361Sopenharmony_ci <h3>Common settings</h3> 37159b3361Sopenharmony_ci <pre> 38159b3361Sopenharmony_ci% lame <span class="hilight">[options]</span> inputfile [outputfile] 39159b3361Sopenharmony_ci </pre> 40159b3361Sopenharmony_ci <ul> 41159b3361Sopenharmony_ci <li> 42159b3361Sopenharmony_ci <strong>Constant Bitrate</strong>: <span class="hilight">-b number</span> or 43159b3361Sopenharmony_ci <span class="hilight">--preset cbr number</span> Valid values 44159b3361Sopenharmony_ci for the -b settings depend on the sampling rate<a href="#note1"><sup>1</sup></a>. 45159b3361Sopenharmony_ci <pre>lame -b 128 sample.wav sample.mp3</pre> 46159b3361Sopenharmony_ci </li> 47159b3361Sopenharmony_ci <li> 48159b3361Sopenharmony_ci <strong>Variable Bitrate (<a href="abr.html">ABR</a> mode)</strong>: 49159b3361Sopenharmony_ci <span class="hilight">--abr number</span> or <span class="hilight">--preset number</span> 50159b3361Sopenharmony_ci Valid values for the --abr setting range from 8 to 320. 51159b3361Sopenharmony_ci <pre>lame --abr 128 sample.wav sample.mp3</pre> 52159b3361Sopenharmony_ci </li> 53159b3361Sopenharmony_ci <li> 54159b3361Sopenharmony_ci <strong>Variable Bitrate (<a href="vbr.html">VBR</a> mode)</strong>: 55159b3361Sopenharmony_ci <span class="hilight">-V number</span> Valid values 56159b3361Sopenharmony_ci are from 0 to 9, with decimal values possible, where 0 is the highest quality 57159b3361Sopenharmony_ci while 9.999 is the lowest one. 58159b3361Sopenharmony_ci <pre>lame -V2 sample.wav sample.mp3</pre> 59159b3361Sopenharmony_ci </li> 60159b3361Sopenharmony_ci </ul> 61159b3361Sopenharmony_ci <h3>Hydrogenaudio recommended settings</h3> 62159b3361Sopenharmony_ci <ul> 63159b3361Sopenharmony_ci <strong>Very high quality</strong>, HiFi, home, or quiet listening, with best file size<a href="#note2"></a> : 64159b3361Sopenharmony_ci <span class="hilight">-V0</span> (avg. 245 kbps) or <span class="hilight">-V1</span> 65159b3361Sopenharmony_ci (avg. 225 kbps) or <span class="hilight">-V2</span> (avg. 190 kbps) or <span class="hilight">-V3</span> (avg. 175 kbps). 66159b3361Sopenharmony_ci <p>VBR settings will normally produce transparent results. 67159b3361Sopenharmony_ci Audible differences between these presets may exist, but are rare. 68159b3361Sopenharmony_ci </p> 69159b3361Sopenharmony_ci </li> 70159b3361Sopenharmony_ci <li> 71159b3361Sopenharmony_ci <strong>Very high quality</strong>, HiFi, home, or quiet listening, with maximum file size<a href="#note2"><sup>2</sup></a> : 72159b3361Sopenharmony_ci <span class="hilight">-b 320</span> 73159b3361Sopenharmony_ci <p>This CBR mode will maximize the MP3's bitrate and overall file 74159b3361Sopenharmony_ci size. The extra space may allow for some parts of the audio to be 75159b3361Sopenharmony_ci compressed with fewer sacrifices, but to date, no one has produced 76159b3361Sopenharmony_ci ABX test results demonstrating that perceived quality is ever better 77159b3361Sopenharmony_ci than the highest VBR profiles described above. 78159b3361Sopenharmony_ci </p> 79159b3361Sopenharmony_ci </li> 80159b3361Sopenharmony_ci <li> 81159b3361Sopenharmony_ci <strong>Portable</strong>, listening in noisy conditions, lower bitrate, smaller file size: 82159b3361Sopenharmony_ci <span class="hilight">-V4</span> (avg. 160 kbps) or <span class="hilight">-V5</span> 83159b3361Sopenharmony_ci (avg. 130 kbps) or <span class="hilight"> -V6</span> (avg. 115 kbps) 84159b3361Sopenharmony_ci <p> 85159b3361Sopenharmony_ci -V6 produces an "acceptable" quality, while -V4 should be close to perceptual transparency. 86159b3361Sopenharmony_ci </p> 87159b3361Sopenharmony_ci </li> 88159b3361Sopenharmony_ci <li> 89159b3361Sopenharmony_ci <strong>Very low bitrate, small sizes</strong>, eg. for voice, radio, mono encoding : 90159b3361Sopenharmony_ci <span class="hilight">--abr 80</span> (stereo) or <span class="hilight">--abr 56 -m m</span> (mono) 91159b3361Sopenharmony_ci <p> 92159b3361Sopenharmony_ci For very low bitrates, up to 100kbps, ABR is most often the best solution. 93159b3361Sopenharmony_ci --preset voice is only available in the command line front-end, and 94159b3361Sopenharmony_ci is there for compatibility. It is currently mapped to --abr 56 -mm, 95159b3361Sopenharmony_ci so that means that the recommendation would be to encode in mono, 96159b3361Sopenharmony_ci and use ABR. 97159b3361Sopenharmony_ci </p> 98159b3361Sopenharmony_ci </li> 99159b3361Sopenharmony_ci </ul> 100159b3361Sopenharmony_ci <div id="notes"> 101159b3361Sopenharmony_ci <ol> 102159b3361Sopenharmony_ci <li> 103159b3361Sopenharmony_ci <a name="note1"></a> 104159b3361Sopenharmony_ci <table cellpadding="5"> 105159b3361Sopenharmony_ci <tr> 106159b3361Sopenharmony_ci <th>Codec</th> 107159b3361Sopenharmony_ci <th>sample frequencies (kHz)</th> 108159b3361Sopenharmony_ci <th>bitrates (kbps)</th> 109159b3361Sopenharmony_ci </tr> 110159b3361Sopenharmony_ci <tr> 111159b3361Sopenharmony_ci <td>MPEG-1 layer III </td> 112159b3361Sopenharmony_ci <td>32, 44.1, 48</td> 113159b3361Sopenharmony_ci <td>32 40 48 56 64 80 96 112 128 160 192 224 256 320</td> 114159b3361Sopenharmony_ci </tr> 115159b3361Sopenharmony_ci <tr> 116159b3361Sopenharmony_ci <td>MPEG-2 layer III</td> 117159b3361Sopenharmony_ci <td> 16, 22.05, 24</td> 118159b3361Sopenharmony_ci <td> 8 16 24 32 40 48 56 64 80 96 112 128 144 160</td> 119159b3361Sopenharmony_ci </tr> 120159b3361Sopenharmony_ci <tr> 121159b3361Sopenharmony_ci <td style="border-bottom:0px;">MPEG-2.5 layer III</td> 122159b3361Sopenharmony_ci <td style="border-bottom:0px;"> 8, 11.025, 12</td> 123159b3361Sopenharmony_ci <td style="border-bottom:0px;">8 16 24 32 40 48 56 64</td> 124159b3361Sopenharmony_ci </tr> 125159b3361Sopenharmony_ci </table> 126159b3361Sopenharmony_ci </li> 127159b3361Sopenharmony_ci <li><a name="note2"></a>Lossy codecs, like MP3, should not be used for archiving, 128159b3361Sopenharmony_ci since the nature of lossy encoding always changes the original sound, even if it 129159b3361Sopenharmony_ci sounds transparent. 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