er2.extractor.ExtractorInput,com.google.android.exoplayer2.extractor.PositionHolder)"><code>Extractor.read(ExtractorInput, PositionHolder)</code></a> is required to provide data starting from <code>
 position</code> in the stream. Valid random access positions are the start of the stream and
 positions that can be obtained from any <a href="../SeekMap.html" title="interface in com.google.android.exoplayer2.extractor"><code>SeekMap</code></a> passed to the <a href="../ExtractorOutput.html" title="interface i