n magnitude to the duration of any media in previous periods still to
     be played.</dd>
<dd><code>bufferedDurationUs</code> - The duration of media that's currently buffered.</dd>
<dd><code>playbackSpeed</code> - The current factor by which playback is sped up.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Whether the loading should continue.</dd>
</dl>
</li>
</ul>
<a id="shouldStartPlayback(com.google.android.exoplayer2.Timeline,com.google.android.exoplayer2.source.MediaPeriodId,long,float