1<html> 2 3<head> 4<title>vorbis - datatype - ov_ectl_ratemanage2_arg</title> 5<link rel=stylesheet href="style.css" type="text/css"> 6</head> 7 8<body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff"> 9<table border=0 width=100%> 10<tr> 11<td><p class=tiny>libvorbisenc documentation</p></td> 12<td align=right><p class=tiny>libvorbisenc release 1.1 - 20040709</p></td> 13</tr> 14</table> 15 16<h1>ov_ectl_ratemanage2_arg</h1> 17 18<p><i>declared in "vorbis/vorbisenc.h"</i></p> 19 20<p> 21 22The ov_ectl_ratemanage2_arg structure is used with <a 23href="vorbis_encode_ctl.html">vorbis_encode_ctl()</a> and the OV_ECTL_RATEMANAGE2_GET and 24OV_ECTL_RATEMANAGE2_SET calls in order to query and modify specifics 25of the encoder's bitrate management configuration. 26 27<p> 28 29<table border=0 width=100% color=black cellspacing=0 cellpadding=7> 30<tr bgcolor=#cccccc> 31 <td> 32<pre><b>struct ovectl_ratemanage2_arg { 33 int management_active; 34 35 long bitrate_limit_min_kbps; 36 long bitrate_limit_max_kbps; 37 long bitrate_limit_reservoir_bits; 38 double bitrate_limit_reservoir_bias; 39 40 long bitrate_average_kbps; 41 double bitrate_average_damping; 42};</b></pre> 43 </td> 44</tr> 45</table> 46 47<h3>Relevant Struct Members</h3> 48<dl> 49<dt><i>management_active</i></dt> 50<dd>nonzero if bitrate management is active</dd> 51 52<dt><i>bitrate_limit_min_kbps</i></dt> 53<dd>Lower allowed bitrate limit in kilobits per second</dd> 54<dt><i>bitrate_limit_max_kbps</i></dt> 55<dd>Upper allowed bitrate limit in kilobits per second</dd> 56<dt><i>bitrate_limit_reservoir_bits</i></dt> 57<dd>Size of the bitrate reservoir in bits</dd> 58<dt><i>bitrate_limit_reservoir_bias</i></dt> 59 60<dd>Regulates the bitrate reservoir's preferred fill level in a range 61from 0.0 to 1.0; 0.0 tries to bank bits to buffer against future 62bitrate spikes, 1.0 buffers against future sudden drops in 63instantaneous bitrate. Default is 0.1 </dd> 64 65<dt><i>bitrate_average_kbps</i></dt> 66<dd>Average bitrate setting in kilobits per second</dd> 67 68<dt><i>bitrate_average_damping</i></dt> <dd>Slew rate limit setting 69for average bitrate adjustment; sets the minimum time in seconds the 70bitrate tracker may swing from one extreme to the other when boosting 71or damping average bitrate.</dd> 72 73 74 75</dl> 76 77 78<br><br> 79<hr noshade> 80<table border=0 width=100%> 81<tr valign=top> 82<td><p class=tiny>copyright © 2004 vorbis team</p></td> 83<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a><br><a href="mailto:team@vorbis.org">team@vorbis.org</a></p></td> 84</tr><tr> 85<td><p class=tiny>vorbisfile documentation</p></td> 86<td align=right><p class=tiny>libvorbisenc release 1.1 - 20040709</p></td> 87</tr> 88</table> 89 90</body> 91 92</html> 93