如何减少Android Exoplayer上HLS媒体播放的延迟？

Question

我正在使用以下代码，但获得30s的缓冲区窗口。它会产生延迟，我希望媒体能够在没有30s窗口的情况下完全直播。 这是代码：

renderersFactory = new DefaultRenderersFactory(getApplicationContext());
        bandwidthMeter = new DefaultBandwidthMeter();
        trackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);
        trackSelector = new DefaultTrackSelector(trackSelectionFactory);
        DefaultAllocator allocator=new DefaultAllocator(true,DEFAULT_BUFFER_SEGMENT_SIZE);
        loadControl = new DefaultLoadControl();


        player = ExoPlayerFactory.newSimpleInstance(renderersFactory, trackSelector, loadControl);
        player.addListener(this);

        dataSourceFactory = new DefaultDataSourceFactory(getApplicationContext(), "ExoplayerDemo");

        if(live){
            Uri urilive=Uri.parse("http://35.200.250.45:1935/live/-LOWyXJ-OHQVa5U6OwVb/playlist.m3u8");

            HlsMediaSource mediaSourcelive= new HlsMediaSource.Factory(dataSourceFactory).setAllowChunklessPreparation(true).createMediaSource(urilive);

            player.prepare(mediaSourcelive);