如何获得YouTube视频宽高比 [英] How to get YouTube video aspect ratio

问题描述

我想获得YouTube视频的宽高比，以便相应地调整播放器的大小。我正在使用JavaScript编写YT播放器。

I'd like to get the aspect ratio of a YouTube video, to resize the player accordingly. I'm programming the YT player using JavaScript.

推荐答案

在Data API调用中唯一可以公开视频尺寸的地方是当您使用v3制作 videos.list（part = fileDetails，id = VIDEO_ID）时API，同时作为视频的所有者进行身份验证。它已在 video.fileDetails.videoStreams []。aspectRatio 财产。这不是特别有用，因为您需要作为视频所有者进行身份验证才能获得该信息。

The only place that exact video dimensions are exposed in a Data API call is when you make a videos.list(part=fileDetails, id=VIDEO_ID) call using the v3 API, while authenticated as the owner of the video. It's returned in the video.fileDetails.videoStreams[].aspectRatio property. This isn't particularly useful, since you need to be authenticated as the video's owner in order to get that info.

如果您只有一个网页，并且想要制作 JSONP 调用以获取有关给定视频是16：9还是4：3的提示，您可以通过类似

If you just have a webpage, and want to make a JSONP call to get a hint about whether a given video is 16:9 or 4:3, you can do that via something like

http://gdata.youtube.com/ feeds / api / videos / VIDEO_ID ？v = 2& alt = jsonc& callback = myCallback

http://gdata.youtube.com/feeds/api/videos/VIDEO_ID?v=2&alt=jsonc&callback=myCallback

例如

http://gdata.youtube.com/feeds/api/videos/F1IVb2_FYxQ?v=2&alt=jsonc&callback=myCallback

在其响应中设置aspectRatio：widescreen，这暗示视频为16：9（或接近16：9）。

has "aspectRatio":"widescreen" set in its response, which is a hint that the video is 16:9 (or close to 16:9).

http://gdata.youtube.com/feeds/api/videos/u1zgFlCw8Aw?v=2&alt=jsonc&callback=myCallback

没有设置 aspectRatio ，这意味着视频是4：3（或接近4：3）。它并不总是精确的宽高比，但它足够接近绝大多数视频都有用。

does not have aspectRatio set at all, which means that the videos is 4:3 (or close to 4:3). It's not always the exact aspect ration, but it's close enough for the vast majority of videos to be useful.

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