要在HTML中嵌入視頻，需使用<video>標籤並指定視頻源與屬性。 1. 使用src屬性或<source>元素定義視頻路徑和格式；2. 添加controls、width、height等基本屬性；3. 為兼容不同瀏覽器，可列舉MP4、WebM、Ogg等多種格式；4. 使用controls、autoplay、muted、loop、preload等屬性控製播放行為；5. 通過CSS實現(xiàn)響應式佈局，確保適配不同屏幕。正確結(jié)構(gòu)與屬性組合能確保視頻良好顯示與功能支持。

To embed a video in HTML using the <video></video> element, you just need to specify the video source and add some basic attributes for control and compatibility. It's straightforward and doesn't require any external plugins.

Basic Structure of the <video></video> Tag

Start with the <video></video> tag and include the src attribute pointing to your video file. You'll also want to add common attributes like controls , width , and height . Here's a simple example:

 <video src="myvideo.mp4" controls width="640" height="360">
  Your browser does not support the video tag.
</video>

This will display the video with playback controls. If the browser doesn't support the <video> element, it will show the fallback text inside the tag.

Supporting Multiple Video Formats

Not all browsers support the same video formats, so it's a good idea to include multiple sources using the <source> element. This ensures broader compatibility.

Here's how to do it:

 <video controls width="640" height="360">
  <source src="myvideo.mp4" type="video/mp4">
  <source src="myvideo.webm" type="video/webm">
  <source src="myvideo.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>

• MP4 is widely supported across modern browsers.
• WebM works well for Chrome and Firefox.
• Ogg is mainly used for Firefox support.

Browsers will tr??y each source in order and play the first one they support.

Commonly Used Attributes

You can customize the behavior of the video player using different attributes:

• controls : Adds play, pause, volume, and timeline controls.
• autoplay : Starts playing the video automatically (may be blocked by browsers).
• muted : Mutes the video on load — helps with autoplay policies.
• loop : Repeats the video once it ends.
• preload : Tells the browser whether to load the video when the page loads ( auto , metadata , or none ).

Example with several attributes:

 <video src="myvideo.mp4" controls autoplay muted loop preload="auto" width="640" height="360">
  Your browser does not support the video tag.
</video>

Some combinations (like autoplay without muted ) might not work due to browser restrictions, especially on mobile devices.

Styling and Responsiveness

If you're embedding videos into a responsive layout, avoid setting fixed width and height . Instead, use CSS to make the video scale properly:

 <video controls class="responsive-video">
  <source src="myvideo.mp4" type="video/mp4">
  Your browser does not support the video tag.
</video>

And in your CSS:

 .responsive-video {
  width: 100%;
  max-width: 640px;
  height: auto;
}

This makes sure the video adjusts to different screen sizes while maintaining its aspect ratio.

基本上就這些。

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