reactjs 如何< img>向video标记的poster参数添加标记

yi0zb3m4  于 2023-03-17  发布在  React
关注(0)|答案(1)|浏览(147)

我基本上是将图像从另一台服务器传输到我的机器上,并将它们作为base64编码的图像存储在localStorage中(如下所示:〈img src=“数据:图像/*;base64,/9 j/4AAQSkZJRgAgAAAQAD//...../〉).我怎样才能将这张图片嵌入为视频海报呢?我发现我可以做这样的事情:

<video controls width="500" height="300" poster={my image here}>
                 <source src="https://www.w3schools.com/tags/movie.mp4" type="video/mp4"></source>

但是我不确定如何用我的localStorage中的图像格式来做。

5f0d552i

5f0d552i1#

您可以简单地在video标签的poster属性中使用数据URI方案,如下所示:

// Assuming you have the base64-encoded image stored in a variable called "imageData"

const video = document.createElement('video');
video.controls = true;
video.width = 500;
video.height = 300;
video.poster = `data:image/*;base64,${imageData}`;

const source = document.createElement('source');
source.src = 'https://www.w3schools.com/tags/movie.mp4';
source.type = 'video/mp4';

video.appendChild(source);

// Add the video element to the DOM wherever you need it

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