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  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
  2. <HTML>
  3. <HEAD>
  4. <TITLE>Basic command line switch reference</TITLE>
  5. <META NAME="description" CONTENT="Command line switch reference">
  6. <META NAME="keywords" CONTENT="lame">
  7. <META NAME="resource-type" CONTENT="document">
  8. <META NAME="distribution" CONTENT="global">
  9. <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso_8859_1">
  10. <LINK REL="STYLESHEET" HREF="lame.css">
  11. </HEAD>
  12. <BODY TEXT=#000000
  13.         BGCOLOR=#F9FBFB LINK=#006666 VLINK=#4C4C4C
  14.         ALINK=#995500>
  15. <H1>Basic command line switch reference</H1>
  16. <br>
  17. Only the most usual switches are described here. However those should be sufficient 
  18. for the vast majority of users. 
  19. <P> 
  20. <TABLE CELLPADDING=3 BORDER="1">
  21.   <TR VALIGN="TOP"> 
  22.     <TD ALIGN="LEFT" nowrap><b>switch</b></TD>
  23.     <TD ALIGN="LEFT" nowrap><b>parameter</b></TD>
  24.   </TR>
  25.   <tr valign="TOP"> 
  26.     <td align="LEFT" nowrap><kbd><a href="#-abr">--abr</a></kbd></td>
  27.     <td align="LEFT" nowrap>average bitrate encoding</td>
  28.   </tr>
  29.   <tr valign="TOP"> 
  30.     <td align="LEFT" nowrap><kbd><a href="#b">-b</a></kbd></td>
  31.     <td align="LEFT" nowrap>bitrate (8...320)</td>
  32.   </tr>
  33.   <tr valign="TOP"> 
  34.     <td align="LEFT" nowrap><kbd><a href="#-decode">--decode</a></kbd></td>
  35.     <td align="LEFT" nowrap>decoding only</td>
  36.   </tr>
  37.   <tr valign="TOP"> 
  38.     <td align="LEFT" nowrap><kbd><a href="#f">-f</a></kbd></td>
  39.     <td align="LEFT" nowrap> fast mode</td>
  40.   </tr>
  41.   <tr valign="TOP"> 
  42.     <td align="LEFT" nowrap><kbd><a href="#h">-h</a></kbd></td>
  43.     <td align="LEFT" nowrap>high quality</td>
  44.   </tr>
  45.   <tr valign="TOP"> 
  46.     <td align="LEFT" nowrap><kbd><a href="#-help">--help</a></kbd></td>
  47.     <td align="LEFT" nowrap> help</td>
  48.   </tr>
  49.   <tr valign="TOP"> 
  50.     <td align="LEFT" nowrap><kbd><a href="#m">-m m</a></kbd></td>
  51.     <td align="LEFT" nowrap>mono mode</td>
  52.   </tr>
  53.   <tr valign="TOP"> 
  54.     <td align="LEFT" nowrap><kbd><a href="#V">-V</a></kbd></td>
  55.     <td align="LEFT" nowrap>VBR quality setting (0...9)</td>
  56.   </tr>
  57. </TABLE>
  58. <BR>
  59. <dl> 
  60.   <dt><strong>* <kbd>--abr n</kbd><a name="-abr">&nbsp;&nbsp;&nbsp;&nbsp;average 
  61.     bitrate encoding</a></strong> 
  62. </dl>
  63. <dl> 
  64.   <dd>Turns on encoding with a targeted average bitrate of n kbits, allowing to 
  65.     use frames of different sizes. The allowed range of n is 8-320, you can use 
  66.     any integer value within that range. 
  67.   <dt><br>
  68.   </dt>
  69.   <hr width="50%" noshade align="center">
  70.   <br>
  71. </dl>
  72. <dl> 
  73.   <dt><strong>* <kbd>-b n</kbd><a name="b">&nbsp;&nbsp;&nbsp;&nbsp;bitrate</a></strong> 
  74.   </dt>
  75. </dl>
  76. <dl> 
  77.   <dd>For MPEG1 (sampling frequencies of 32, 44.1 and 48 kHz)<br>
  78.     n = 32,40,48,56,64,80,96,112,128,160,192,224,256,320<br>
  79.     <br>
  80.     For MPEG2 (sampling frequencies of 16, 22.05 and 24 kHz)<br>
  81.     n = 8,16,24,32,40,48,56,64,80,96,112,128,144,160<br>
  82.     <br>
  83.     Default is 128 kbs for MPEG1 and 80 kbs for MPEG2. 
  84.   <dt><br>
  85.   </dt>
  86.   <hr width="50%" noshade align="center">
  87.   <br>
  88. </dl>
  89. <dl> 
  90.   <dt><strong>* <kbd>--decode</kbd><a name="-decode">&nbsp;&nbsp;&nbsp;&nbsp;decoding 
  91.     only</a></strong> </dt>
  92. </dl>
  93. <dl> 
  94.   <dd>Uses LAME for decoding to a WAV file. The input file can be any input type 
  95.     supported by encoding, including layer I,II,III (MP3). 
  96.   <dt><br>
  97.     <br>
  98.   </dt>
  99.   <hr width="50%" noshade align="center">
  100.   <br>
  101.   <dl> </dl>
  102.   <dt><strong>* <kbd>-f</kbd><a name="f">&nbsp;&nbsp;&nbsp;&nbsp;fast mode</a></strong> 
  103.   </dt>
  104. </dl>
  105. <dl> 
  106.   <dd> This switch forces the encoder to use a faster encoding mode, but with 
  107.     a lower quality. 
  108.   <dt><br>
  109.     <br>
  110.   </dt>
  111.   <hr width="50%" noshade align="center">
  112.   <br>
  113.   <dl> </dl>
  114.   <dt><strong>* <kbd>-h</kbd><a name="h">&nbsp;&nbsp;&nbsp;&nbsp;high quality</a></strong> 
  115.   </dt>
  116. </dl>
  117. <dl> 
  118.   <dd> Use some quality improvements. Encoding will be slower, but the result 
  119.     will be of higher quality.<br>
  120.     This switch is always enabled when using VBR. 
  121.   <dt><br>
  122.     <br>
  123.   </dt>
  124.   <hr width="50%" noshade align="center">
  125.   <br>
  126.   <dl> </dl>
  127.   <dt><strong>* <kbd>--help</kbd><a name="-help">&nbsp;&nbsp;&nbsp;&nbsp;help</a></strong> 
  128.   </dt>
  129. </dl>
  130. <dl> 
  131.   <dd> Display a list of all available options. 
  132.   <dt><br>
  133.     <br>
  134.   </dt>
  135.   <hr width="50%" noshade align="center">
  136.   <br>
  137.   <dl> </dl>
  138.   <dt><strong>* <kbd>-m m</kbd><a name="m">&nbsp;&nbsp;&nbsp;&nbsp;mono 
  139.     mode</a></strong> </dt>
  140. </dl>
  141. <dl> 
  142.   <dd>The input will be encoded as a mono signal. 
  143.   <dt><br>
  144.     <br>
  145.   </dt>
  146.   <hr width="50%" noshade align="center">
  147.   <br>
  148.   <dl> </dl>
  149.   <dt><strong>* <kbd>-V 0...9</kbd><a name="V">&nbsp;&nbsp;&nbsp;&nbsp;VBR quality 
  150.     setting</a></strong></dt>
  151. </dl>
  152. <dl> 
  153.   <dd> Enable VBR (Variable BitRate) and specifies the value of VBR quality.<br>
  154.     default=4<br>
  155.     0=highest quality. 
  156. </dl>
  157. </BODY>
  158. </HTML>