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1 <html>
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2
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3 <head>
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4 <title>vorbis - datatype - ovectl_ratemanage2_arg</title>
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5 <link rel=stylesheet href="style.css" type="text/css">
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6 </head>
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7
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8 <body bgcolor=white text=black link="#5555ff" alink="#5555ff" vlink="#5555ff">
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9 <table border=0 width=100%>
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10 <tr>
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11 <td><p class=tiny>libvorbisenc documentation</p></td>
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12 <td align=right><p class=tiny>libvorbisenc version 1.3.2 - 20101101</p></td>
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13 </tr>
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14 </table>
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15
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16 <h1>ovectl_ratemanage2_arg</h1>
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17
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18 <p><i>declared in "vorbis/vorbisenc.h"</i></p>
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19
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20 <p>
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21
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22 The ovectl_ratemanage2_arg structure is used with <a
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23 href="vorbis_encode_ctl.html">vorbis_encode_ctl()</a> and the OV_ECTL_RATEMANAGE2_GET and
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24 OV_ECTL_RATEMANAGE2_SET calls in order to query and modify specifics
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25 of the encoder's bitrate management configuration.
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26
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27 <p>
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28
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29 <table border=0 width=100% color=black cellspacing=0 cellpadding=7>
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30 <tr bgcolor=#cccccc>
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31 <td>
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32 <pre><b>struct ovectl_ratemanage2_arg {
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33 int management_active;
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34
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35 long bitrate_limit_min_kbps;
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36 long bitrate_limit_max_kbps;
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37 long bitrate_limit_reservoir_bits;
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38 double bitrate_limit_reservoir_bias;
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39
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40 long bitrate_average_kbps;
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41 double bitrate_average_damping;
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42 };</b></pre>
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43 </td>
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44 </tr>
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45 </table>
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46
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47 <h3>Relevant Struct Members</h3>
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48 <dl>
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49 <dt><i>management_active</i></dt>
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50 <dd>nonzero if bitrate management is active</dd>
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51
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52 <dt><i>bitrate_limit_min_kbps</i></dt>
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53 <dd>Lower allowed bitrate limit in kilobits per second</dd>
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54 <dt><i>bitrate_limit_max_kbps</i></dt>
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55 <dd>Upper allowed bitrate limit in kilobits per second</dd>
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56 <dt><i>bitrate_limit_reservoir_bits</i></dt>
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57 <dd>Size of the bitrate reservoir in bits</dd>
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58 <dt><i>bitrate_limit_reservoir_bias</i></dt>
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59
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60 <dd>Regulates the bitrate reservoir's preferred fill level in a range
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61 from 0.0 to 1.0; 0.0 tries to bank bits to buffer against future
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62 bitrate spikes, 1.0 buffers against future sudden drops in
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63 instantaneous bitrate. Default is 0.1 </dd>
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64
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65 <dt><i>bitrate_average_kbps</i></dt>
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66 <dd>Average bitrate setting in kilobits per second</dd>
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67
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68 <dt><i>bitrate_average_damping</i></dt> <dd>Slew rate limit setting
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69 for average bitrate adjustment; sets the minimum time in seconds the
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70 bitrate tracker may swing from one extreme to the other when boosting
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71 or damping average bitrate.</dd>
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72
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73
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74
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75 </dl>
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76
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77
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78 <br><br>
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79 <hr noshade>
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80 <table border=0 width=100%>
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81 <tr valign=top>
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82 <td><p class=tiny>copyright © 2000-2010 Xiph.Org</p></td>
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83 <td align=right><p class=tiny><a href="http://www.xiph.org/ogg/vorbis/index.html">Ogg Vorbis</a></p></td>
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84 </tr><tr>
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85 <td><p class=tiny>libvorbisenc documentation</p></td>
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86 <td align=right><p class=tiny>libvorbisenc version 1.3.2 - 20101101</p></td>
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87 </tr>
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88 </table>
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89
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90 </body>
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91
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92 </html>
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