source: extensions/gsdl-video/trunk/installed/cmdline/share/doc/lame/html/basic.html@ 18425

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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>
17Only the most usual switches are described here. However those should be sufficient
18for 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>
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