从VideoPlayer源URL访问尺寸(宽度/高度) [英] Accessing dimensions (width/height) from a VideoPlayer source URL

问题描述

我正在开发一个Unity项目，该项目需要我下载视频文件(mp4格式)并使用VideoPlayer组件播放.由于该文件是在运行时下载的，因此与将其作为VideoClip加载相比，我实际上必须通过URL将其流式传输"到其下载位置.

I am working on a Unity project that requires me to download a video file (mp4 format) and play it using the VideoPlayer component. Because the file is downloaded at runtime, I effectively have to "stream" it via a url to its downloaded location, as opposed to loading it as a VideoClip.

要准确调整视频将要播放到的目标RenderTexture和GameObject的大小，我需要视频文件本身的尺寸.因为它不是VideoClip，所以我不能使用:

To accurately size the target RenderTexture and GameObject the video will be playing to, I need the dimensions of the video file itself. Because it is not a VideoClip I cannot use:

VideoClip clip = videoPlayer.clip;
float videoWidth = clip.width;
float videoHeight = clip.height;

因为我使用的是视频URL而不是VideoClip，所以它将返回null.

Because I am using a source URL as opposed to a VideoClip, this will return null.

我可以通过某种方式直接从文件中获取视频尺寸吗?

Can I get the video dimensions directly from the file somehow?

推荐答案

您可以从VideoPlayer构造的Texture中检索这些信息.

You can retrieve these information from the Texture that VideoPlayer constructs.

获取VideoPlayer

Get VideoPlayer

VideoPlayer videoPlayer = GetComponent<VideoPlayer>();

获取纹理VideoPlayer

Get the Texture VideoPlayer

Texture vidTex = videoPlayer.texture;

获取VideoPlayer的尺寸宽度/高度

Get VideoPlayer dimension width/height

float videoWidth = vidTex.width;
float videoHeight = vidTex.height;

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确保仅在videoPlayer.isPrepared为true之后获得纹理.请参阅我的其他答案，以获取有关如何播放视频使其显示在RawImage组件上的完整代码.

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Make sure to only get the texture after videoPlayer.isPrepared is true. See my other answer for full code on how to play video make it display on RawImage component.

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