我试图开发一个应用程序来加载 Youtube 视频，但我想在它完全可用时播放它，但是我无法在 API 文档 和 演示页面。
但是，在演示页面上，它更新了以下内容：
Total bytes: 14316401
Start bytes: 0
Bytes loaded: 14316401
但是，我不知道最好的方法是什么。您能否建议我一种在视频完全加载时获得回调的正确且稳定的方法，或者如果我错了可以修复我？
I was trying to develop an application where I would load a Youtube video, but I want to play it when it is fully available, however I could not find a proper callback in the API Documentation and on the Demo Page.
However, on the Demo page, it updates the following:
Total bytes: 14316401
Start bytes: 0
Bytes loaded: 14316401
But, I do not know what is the best approach to that. Can you suggest me a proper and stable way of getting a callback when the video is fully loaded or fix me on if I am wrong?
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似乎没有人关心，所以我决定在 1/2 秒的时间内检查比率（下载的字节数/总字节数）。
Seems no one cared, so I decided to go with checking the ratio(downloaded bytes/total bytes) in a 1/2 sec period.