private void PlayStreamFile(float timeStampSec)
{
StreamState = ExpoScheduledStreamState.WaitAcyncOperation;
mPlayer.Seek(timeStampSec);
seekReadyHandler = (source, index) => { OnSeekReady(); };
mPlayer.videoPlayer.sendFrameReadyEvents = true;
mPlayer.videoPlayer.frameReady += seekReadyHandler;
}