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<title>vorbis - datatype - ovectl_ratemanage2_arg</title>
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<td><p class=tiny>libvorbisenc documentation</p></td>
<td align=right><p class=tiny>libvorbisenc version 1.3.2 - 20101101</p></td>
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<h1>ovectl_ratemanage2_arg</h1>

<p><i>declared in "vorbis/vorbisenc.h"</i></p>

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The ovectl_ratemanage2_arg structure is used with <a
href="vorbis_encode_ctl.html">vorbis_encode_ctl()</a> and the OV_ECTL_RATEMANAGE2_GET and
OV_ECTL_RATEMANAGE2_SET  calls in order to query and modify specifics
of the encoder's bitrate management configuration.

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<pre><b>struct ovectl_ratemanage2_arg {
  int    management_active;

  long   bitrate_limit_min_kbps;
  long   bitrate_limit_max_kbps;
  long   bitrate_limit_reservoir_bits;
  double bitrate_limit_reservoir_bias;

  long   bitrate_average_kbps;
  double bitrate_average_damping;
};</b></pre>
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<h3>Relevant Struct Members</h3>
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<dt><i>management_active</i></dt>
<dd>nonzero if bitrate management is active</dd>

<dt><i>bitrate_limit_min_kbps</i></dt>
<dd>Lower allowed bitrate limit in kilobits per second</dd>
<dt><i>bitrate_limit_max_kbps</i></dt>
<dd>Upper allowed bitrate limit in kilobits per second</dd>
<dt><i>bitrate_limit_reservoir_bits</i></dt>
<dd>Size of the bitrate reservoir in bits</dd>
<dt><i>bitrate_limit_reservoir_bias</i></dt>

<dd>Regulates the bitrate reservoir's preferred fill level in a range
from 0.0 to 1.0; 0.0 tries to bank bits to buffer against future
bitrate spikes, 1.0 buffers against future sudden drops in
instantaneous bitrate.  Default is 0.1 </dd>

<dt><i>bitrate_average_kbps</i></dt>
<dd>Average bitrate setting in kilobits per second</dd>

<dt><i>bitrate_average_damping</i></dt> <dd>Slew rate limit setting
for average bitrate adjustment; sets the minimum time in seconds the
bitrate tracker may swing from one extreme to the other when boosting
or damping average bitrate.</dd>


</dl>


<br><br>
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<td><p class=tiny>copyright &copy; 2000-2010 Xiph.Org</p></td>
<td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a></p></td>
</tr><tr>
<td><p class=tiny>libvorbisenc documentation</p></td>
<td align=right><p class=tiny>libvorbisenc version 1.3.2 - 20101101</p></td>
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author	Chris Cannam
date	Fri, 07 Feb 2020 11:51:13 +0000
parents	05aa0afa9217
children