如何使用 Exoplayer 从 Google Cloud Platform 流式传输 m4v url

Question

我想使用 Exoplayer 从谷歌云存储中流式传输 m4v 视频 URL 链接 https://storage.cloud.google.com/math_oneticha/Numbers/NUMBERS.m4v?authuser=2，但我的应用程序不断崩溃，因为没有可用的 Exoplayer 提取器可以读取流。当我在浏览器上使用相同的 URL 链接时，它会完美地流式传输。我还尝试使用 exoplayer 应用程序流式传输 mp4 URL https://media.publit.io/file/Mathematic/LinearEquation/Linear-Equation-4.mp4，它完美地流式传输意味着 exoplayer 应用程序只是对 m4v url 有挑战。下面是我的 exoplayer 代码

 Uri videoUrl;
// Initialize Player view and variables
 PlayerView player;
ProgressBar vprogressBar;
ImageView fullScreenImage, closeLecture;
SimpleExoPlayer simpleExoPlayer;

// ref Player variables
    player = findViewById(R.id.playerView);
    vprogressBar = findViewById(R.id.video_loading_bar);
    fullScreenImage = findViewById(R.id.fullscreen_option);
    closeLecture = findViewById(R.id.videoClose);

    String stringUrl = "https://storage.cloud.google.com/math_oneticha/Numbers/NUMBERS.m4v?authuser=2";
    videoUrl = Uri.parse(stringUrl);
    LoadControl loadControl = new DefaultLoadControl();
    BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
    TrackSelector trackSelector = new DefaultTrackSelector(
            new AdaptiveTrackSelection.Factory(bandwidthMeter)
    );

    simpleExoPlayer = ExoPlayerFactory.newSimpleInstance(LectureActivity.this, trackSelector,loadControl);
    DefaultHttpDataSourceFactory factory = new DefaultHttpDataSourceFactory("exoplayer video");
    ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
    MediaSource mediaSource = new ExtractorMediaSource(videoUrl,factory,extractorsFactory,null,null);
    player.setPlayer(simpleExoPlayer);
    player.setKeepScreenOn(true);
    simpleExoPlayer.prepare(mediaSource);
    simpleExoPlayer.setPlayWhenReady(true);
    simpleExoPlayer.addListener(new Player.EventListener(){
        
         @Override
        public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
            if (playbackState == Player.STATE_BUFFERING){
                vprogressBar.setVisibility(View.VISIBLE);

            }else if (playbackState == Player.STATE_READY){
                vprogressBar.setVisibility(View.INVISIBLE);
            }

        }
    }

下面是我的崩溃日志

E/ExoPlayerImplInternal: Source error.
com.google.android.exoplayer2.source.UnrecognizedInputFormatException: None of the available extractors (MatroskaExtractor, FragmentedMp4Extractor, Mp4Extractor, Mp3Extractor, AdtsExtractor, Ac3Extractor, TsExtractor, FlvExtractor, OggExtractor, PsExtractor, WavExtractor) could read the stream.

请问我可以做些什么不同的事情，以便我的应用可以从谷歌云存储中流式传输我的 m4v url 链接？

Answer 1

AFAIK，您需要使用 gsutil cp 将流传输到 ExoPlayer。
我对整个过程了解不多，但我找到了documentation，它可能会向您发送正确的方向。