[XBOX] [UWP] [JS] [HTML] AdaptiveMediaSource MediaPlayer可以听到声音，但看不到播放器 [英] [XBOX][UWP][JS][HTML] AdaptiveMediaSource MediaPlayer can hear sound, but can't see player

问题描述

 

使用以下代码（Xbox自托管的html / js应用）时，我可以获得播放的声音，可以看不到视频。有什么我想念的吗？我需要使用& AdaptiveMediaSource api，因为使用< video />元素似乎泄漏内存
具有高比特率HLS，而MediaPlayer提供了一种限制最大比特率的方法。

When using the following code (Xbox self hosted html/js app), I can get the sound to play, can can not see the video. Is there something I am missing? I need to use the AdaptiveMediaSource api since using a <video /> element seems to leak memory with high bitrate HLS, and MediaPlayer provides a way to cap the max bitrate.

感谢您的支持帮助！

    const encoding = 'http://content.uplynk.com/52ab86c3f6c74d6abf7f162204d51609.m3u8'

  &NBSP; const encodingUri = new window.Windows.Foundation.Uri（encoding）;

  &NBSP; Windows.Media.Streaming.Adaptive.AdaptiveMediaSource
&NBSP; &NBSP; &NBSP; .createFromUriAsync（encodingUri）
&NBSP; &NBSP; &NBSP; .then（result => {
     let player = new Windows.Media.Playback.MediaPlayer（this.player）;
     player .autoPlay = true;
     const source = Windows.Media.Core.MediaSource.createFromAdaptiveMediaSource（
      result.mediaSource
    ）;     player.source = source;
     player.play（）;
   }）;

    const encodingUri = new window.Windows.Foundation.Uri(encoding);

    Windows.Media.Streaming.Adaptive.AdaptiveMediaSource
      .createFromUriAsync(encodingUri)
      .then(result => {
        let player = new Windows.Media.Playback.MediaPlayer(this.player);
        player.autoPlay = true;
        const source = Windows.Media.Core.MediaSource.createFromAdaptiveMediaSource(
          result.mediaSource
        );
        player.source = source;
        player.play();
      });

推荐答案

Hi vsrafe，

Hi vsrafe,

这是一个类似的主题  [UWP] [HTML]使用Windows.Media.Playback.MediaPlayer ，你可以找到
来自@Elvis Xia的答案：

Here is a similar thread [UWP][HTML]Using Windows.Media.Playback.MediaPlayer, you can find the answer from the @Elvis Xia:

据我所知，Windows.Media.Playback.MediaPlayer目前依赖的是XAML或Composition API，它们在html中不可用。

因此，无法在UWP（JS）中使用Windows.Media.Playback.MediaPlayer和视频元素。

如果您对此功能仍有要求，可以尝试将您的想法提交到用户语音网站： https://wpdev.uservoice.com/ 。

您还可以在Windows 10反馈应用中提交此功能请求/反馈。

祝你好运，

Breeze

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