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HTML: Video

As with audio, until recently it was impossible to "comfortably" insert a video file into HTML markup. Since HTML5 there is a <video> element that, like <audio>, allows you to quickly add videos to a page.

The <video> tag is paired, which, in the absence of nested <source> tags, specifies the path to the video file in the src attribute. You can use the controls attribute to display controls for the video player. The visual appearance of the controls depends on the specific browser.

<video src="" controls></video>

By using special <source> tags, you can add multiple video formats. This is necessary because each browser can only play certain video formats. The only format that all browsers handle correctly is mp4.

<video controls>
    <source src="" type="video/mp4">
    <source src="" type="video/webm">
    <source src="" type="video/ogg">

Three file formats ensure that videos work on all devices. You also need type attribute, which will tell the browser the format of the video. It's this attribute that the browser uses to decide which file to download.

The <video> tag has several important attributes:

  • controls — Adds controls for the video player
  • autoplay — Automatic playback after loading the video
  • width — Width of the video playe
  • height — Height of the video player

The width and height attributes are pixel values, and you don't need to specify the unit of measure.

<video width="500" height="500" controls>
    <source src="" type="video/mp4">
    <source src="" type="video/webm">
    <source src="" type="video/ogg">


Add an mp4 video to the page:

Turn your volume down just in case ;)

The exercise doesn't pass checking. What to do? 😶

If you've reached a deadlock it's time to ask your question in the «Discussions». How ask a question correctly:

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In my environment the code works, but not here 🤨

Tests are designed so that they test the solution in different ways and against different data. Often the solution works with one kind of input data but doesn't work with others. Check the «Tests» tab to figure this out, you can find hints at the error output.

My code is different from the teacher's one 🤔

It's fine. 🙆 One task in programming can be solved in many different ways. If your code passed all tests, it complies with the task conditions.

In some rare cases, the solution may be adjusted to the tests, but this can be seen immediately.

I've read the lessons but nothing is clear 🙄

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  • If only one file is used, it's enough to add the src attribute for the <video> tag. Otherwise use <source> tags

  • The mp4 format is correctly handled by most browsers. If possible, it's best to use it.

If you got stuck and don't know what to do, you can ask a question in our community