trun.setSampleCompositionTimeOffsetPresent(compositionTimeEntriesLeft > 0);
trun.setSampleCompositionTimeOffsetPresent(streamingTrack.getTrackExtension(CompositionTimeTrackExtension.class) != null);
trun.setSampleCompositionTimeOffsetPresent(compositionTimeEntriesLeft > 0);
trun.setSampleCompositionTimeOffsetPresent(compositionTimeEntriesLeft > 0);