javascript - 为什么在MSE播放前调用 'endOfStream'？

Question

在MSE例子中，播放前调用endOfstream

mediaSource.endOfStream();
video.play() 

https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/endOfStream

你知道为什么播放前要调用endOfStream吗？我认为“endOfStream”会在发出视频终止信号时调用。

谢谢!

Answer 1

.endOfStream() 显然在问题的 javascript 中用于更新 HTMLMediaElement 之前的 duration媒体播放开始。

2.4.7 End of stream algorithm

NOTE

This allows the duration to properly reflect the end of the appended media segments. For example, if the duration was explicitly set to 10 seconds and only media segments for 0 to 5 seconds were appended before endOfStream() was called, then the duration will get updated to 5 seconds.