获取 YouTube 直播活动的当前时长 [英] Get current duration of YouTube Live Event

问题描述

有没有办法在向 YouTube 直播时获取录制流的当前时间?我希望能够在整个实时流中的某些点发送 API 请求以获取流的当前分钟/秒.我试图实现的最终结果是能够记录亮点列表.本质上，用户按下一个按钮，它会获得当时流的当前时间，然后用户可以为当时发生的事情添加注释.但是，通过阅读所有文档，我找不到获取录制流的当前时间的方法.

Is there a way to get the current time of a the recorded stream when broadcasting to YouTube live? I want to be able to send an API request at certain points throughout a live stream to get the current minute/second of the stream. The end result I am trying to achieve is to be able to log a list of highlights. Essentially, a user presses a button and it gets the current time of the stream at that moment, then the user can add a note for what happened at that time. From reading all the docs though, I cannot find a way to get the current time of the recorded stream.

推荐答案

看起来您可以使用 iFrame API 的 getDuration() 方法来做到这一点.

Looks like you can do this with the iFrame API's getDuration() method.

https://developers.google.com/youtube/iframe_api_reference#getDuration

查看现场活动的特别说明:

Check out the special note for live events:

如果当前播放的视频是直播事件，getDuration() 函数将返回自直播视频流开始以来经过的时间.具体来说，这是视频在没有重置或中断的情况下流式传输的时间量.此外，此持续时间通常比实际事件时间长，因为流式传输可能会在事件开始时间之前开始.

If the currently playing video is a live event, the getDuration() function will return the elapsed time since the live video stream began. Specifically, this is the amount of time that the video has streamed without being reset or interrupted. In addition, this duration is commonly longer than the actual event time since streaming may begin before the event's start time.

您没有指定语言，所以我将发布两种不同语言的代码示例.两者都使用 iFrame API.

You didn't specify a language, so I'll post code examples in two different languages. Both utilize the iFrame API.

JavaScript:

JavaScript:

window.onYouTubePlayerReady = function(playerId) {
    window.ytplayer = document.getElementById("ytPlayer");
    console.log(window.ytplayer.getDuration());
}

Objective-C(使用 YouTube 的 youtube-ios-player-helper 类)

Objective-C (using YouTube's youtube-ios-player-helper class)

@property (weak, nonatomic) IBOutlet YTPlayerView *playerView;

// ...

- (void)viewDidLoad {
    [super viewDidLoad];
    [[self.playerView loadWithVideoId:@"iGTIK_8ydoI"] // live at the time answer was posted
}

// ...

- (void)getDurationOfPlayingVideo {

    NSLog(@"duration: %d", [self.playerView duration]);
}

正如我个人测试中的免责声明:Live Streaming API 非常易怒且不稳定，我发现某些 Live Events 返回的持续时间为 0.

Just as a disclaimer from my personal testing: the Live Streaming API is extraordinary temperamental and unstable, and I've found that some Live Events return a duration of 0.

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