如何在 ExoPlayer 中跳过部分视频 android

Question

我想在我的视频播放器中实现跳过简介、跳过演职员表等功能。我正在使用 Exoplayer，假设我有一个长度为 00:15:21 (hh:mm:ss) 的视频，我知道视频的实际内容从 00:00:18 开始，内容结束于 [=20] =].我想像 Netflix 一样显示 "Skip intro" 和 "Next Episode" 按钮。我怎样才能做到这一点？

Exoplayer 页面上的问题Github： https://github.com/google/ExoPlayer/issues/5515

Answer 1

从Developer Guide开始，您可以使用ClippingMediaSourceAPI来完成您的任务。

ClippingMediaSource can be used to clip a MediaSource so that only part of it is played

从 00:00:18 开始播放视频到结尾（跳过介绍）。

MediaSource videoSource =
    new ExtractorMediaSource.Factory(...).createMediaSource(videoUri);
// Clip to start at from 00:00:18 to the end.
ClippingMediaSource clippingSource =
    new ClippingMediaSource(
        videoSource,
        /* startPositionUs= */ 18_000_000,
        /* endPositionUs= */ C.TIME_END_OF_SOURCE);

从 00:14:12 开始播放视频到结束（下一集）

MediaSource videoSource =
    new ExtractorMediaSource.Factory(...).createMediaSource(videoUri);
// Clip to start at from 00:14:12 to the end.
ClippingMediaSource clippingSource =
    new ClippingMediaSource(
        videoSource,
        /* startPositionUs= */ 852_000_000,
        /* endPositionUs= */ C.TIME_END_OF_SOURCE);

或者播放从 00:00:18 到 00:14:12

的视频

MediaSource videoSource =
    new ExtractorMediaSource.Factory(...).createMediaSource(videoUri);
// Clip to start at from 00:00:18 to 00:14:12.
ClippingMediaSource clippingSource =
    new ClippingMediaSource(
        videoSource,
        /* startPositionUs= */ 18_000_000,
        /* endPositionUs= */ 852_000_000);

您可以找到有关 API here 的更多信息。

Answer 2

好的，在 ExoPlayer 开发人员的帮助下，我找到了解决方案。详细信息在我在问题中添加的参考 link 中。这是摘要：

如果我们知道跳过的持续时间，我们可以创建消息并将其发送到 Exoplayer，在回调中，我们可以实现我们的业务逻辑，例如使按钮可见、按钮的 onClickListners 等。

private class PlayerEventListener extends Player.DefaultEventListener {

        @Override
        public void onPositionDiscontinuity(@Player.DiscontinuityReason int reason) {

                prepareSkipToNextEpisode();
                if(reason == DISCONTINUITY_REASON_PERIOD_TRANSITION){          //when a video naturally ends it course and starts playing next video.
                    prepareSkipIntro();
                }
            }

        }

        @Override
        public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
            super.onTracksChanged(trackGroups, trackSelections);

        }

        @Override
        public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {

            String stateString;

            switch (playbackState) {
                case Player.STATE_IDLE: // The player does not have any media to play.
                    stateString = "Player.STATE_IDLE";
                    mProgressBar.setVisibility(View.VISIBLE);
                    playerView.setKeepScreenOn(false);
                    //mPlayerView.hideController();
                    mediaControlsLayout.setVisibility(View.GONE);
                    break;
                case Player.STATE_BUFFERING: // The player needs to load media before playing.
                    stateString = "Player.STATE_BUFFERING";
                    mProgressBar.setVisibility(View.VISIBLE);
                    mediaControlsLayout.setVisibility(View.GONE);
                    playerView.setKeepScreenOn(true);
                    break;
                case Player.STATE_READY: // The player is able to immediately play from its current position.
                    stateString = "Player.STATE_READY";
                    mProgressBar.setVisibility(View.GONE);
                    mediaControlsLayout.setVisibility(View.VISIBLE);
                    playerView.setKeepScreenOn(true);
                    prepareSkipToNextEpisode();
                    if((player.getContentPosition() < 5000)) {
                            prepareSkipIntro();
                        }
                        //prepareSkipToNextEpisode();


                    break;
                case Player.STATE_ENDED: // The player has finished playing the media.
                    stateString = "Player.STATE_ENDED";
                    playerView.setKeepScreenOn(false);
                    break;
                default:
                    stateString = "UNKNOWN_STATE";
                    break;
            }

        }

    }


private void prepareSkipIntro(){

        if(episodeStartTimes[player.getCurrentWindowIndex()] > 0) {
            inttoBeginsHandler = new Handler();
            long introDurationMs = 3 * 1000;
            player.createMessage((messageType, payload) -> hideSkipIntro())
                    .setPosition(introDurationMs).setHandler(inttoBeginsHandler).send();
        }

    }


    private void hideSkipIntro(){

        if(player.getCurrentPosition()>2500) {
            skipIntroBtn.setVisibility(View.VISIBLE);
            skipIntroBtn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                    if (player != null) {

                        player.seekTo(episodeStartTimes[player.getCurrentWindowIndex()]);
                        prepareSkipToNextEpisode();
                        skipIntroBtn.setVisibility(View.GONE);
                    }

                }
            });

            final Handler handler = new Handler();
            handler.postDelayed(new Runnable() {
                @Override
                public void run() {
                    skipIntroBtn.setVisibility(View.GONE);

                }
            }, 5000);

        }
    }


    private void prepareSkipToNextEpisode(){


        if(episodeEndTimes[player.getCurrentWindowIndex()] > 0) {
            if (player.getCurrentPosition() < 1000) {

                remainingTime = episodeDummyEndtimes[player.getCurrentWindowIndex()];

            } else {

                remainingTime = episodeDummyEndtimes[player.getCurrentWindowIndex()] - player.getCurrentPosition();


            }

            creditsBeginssHandler = null;
            creditsBeginssHandler = new Handler();
            player.createMessage((messageType, payload) -> endEpisode())
                    .setPosition(remainingTime).setHandler(creditsBeginssHandler).send();
        }

    }

    private void endEpisode(){


        if(player.getCurrentPosition()>= episodeDummyEndtimes[player.getCurrentWindowIndex()]) {



            if (player.getCurrentWindowIndex() < (episodeEndTimes.length-1)) {  // no need of skip credits for the final episode
                skipCreditsBtn.setVisibility(View.VISIBLE);
                skipCreditsBtn.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {


                        player.seekTo(player.getNextWindowIndex(), 0);
                        skipCreditsBtn.setVisibility(View.GONE);
                    }
                });

                final Handler handler = new Handler();
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        skipCreditsBtn.setVisibility(View.GONE);

                    }
                }, 5000);
            }else{
                skipCreditsBtn.setVisibility(View.GONE);
            }
        }
    }

这里我一般把00:15:00作为视频内容的结尾，注意，如果用户使用seekbar手动移动超过该时长，则不会触发该消息。

Answer 3

这里是执行此操作的简短方法。下面的代码在开始时剪辑视频最多 13 秒以跳过介绍。视频源是 HlsMediaSource 但您可以对 VideoSource.

进行类似的操作

DefaultHttpDataSourceFactory dataSourceFactory = getSettedHeadersDataFactory();
            HlsMediaSource hlsMediaSource =
                    new HlsMediaSource.Factory(dataSourceFactory).createMediaSource(Uri.parse(qualities.get(currentQuality).getQualityUrl()));
            ClippingMediaSource clippingSource =
                    new ClippingMediaSource(
                            hlsMediaSource,
                            /* startPositionUs= */ 13_000_000,
                            /* endPositionUs= */ C.TIME_END_OF_SOURCE);
            player.prepare(clippingSource);

如何在 ExoPlayer 中跳过部分视频 android

How to skip few part of the video in ExoPlayer android

android

exoplayer