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<code>public static const AR_STANDARD:String = "standard"</code><p>
   Constant for specifying a standard aspect ratio on a video stream.
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<a name="AUDIO_STREAM"></a>
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<td class="detailHeaderName">AUDIO_STREAM</td><td class="detailHeaderType">constant</td><td class="detailHeaderRule">&nbsp;</td>
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<code>public static const AUDIO_STREAM:String = 