How To Fix HTML5 Video Not Found (2024)

At times, when you are trying to watch a video on YouTube or a website, you might come across the “Video not found Error”. Well, this is a clear example of an HTML5 video error.

This error implies that your web browser settings or the configuration of the mp4 video player are facing an HTML5 video error.

In this article, you will learn about how this error occurs with the plausible fixes for the video playback issue.

What is HTML5?

HTML5 is a markup language that allows you to structure the appearance of web pages that use multimedia contents like applications, videos and animations.

Its main feature is its dedicated video and audio elements. It allows users to view online videos directly from the webpage without any extra plugins or third-party applications like Adobe Flash Player.

Why Does an HTML5 File Not Found Occur?

The main reasons behind web pages showing the HTML5 video error are your website and browser settings. Here is a list of causes that might be affecting the web page HTML5 video playback error.

  • Corrupt embedded video file in the website
  • Out-of-date web browser
  • Overload of web browser history, cookies, and caches
  • Unsupported codec files in the browser

How to Fix an HTML5 File Video Not Found Error?

If the problem is with the website, it’s best to contact the website developer to fix the issue. With the help of the developers, you can download the necessary video codecs and resolve this issue.

But, if it’s due to browser settings, then this issue is easy to resolve. All the methods are free and do not require any assistance from third-party apps. Let’s move on to solving the HTML video not found error.

Update Web Browser

Additional features like system fixes with better security are only available in the newer versions of browsers. Outdated browsers can contain bugs and corrupted files. As a result, these web browsers can show issues in the HTML video file error.

If you have not set Google Chrome to auto-update, here’s how you can do it.

  1. Go to the three-dotted lines in the far right-hand side corner.
  2. Click on the Help and Choose About Google Chrome option.
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  3. Google Chrome will check for updates on your browser.
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If any update is available, Google Chrome automatically informs you in this section. Sometimes, updates on your browser can help resolve issues from web pages. Chrome also notifies you of browser updates in the top-hand side corner, next to the three-dotted lines.

If you use different web browsers for your daily activity, then please check if they are all up-to-date.

Disable Hardware Acceleration

Although Hardware Acceleration gives users the best graphics and hardware performance, it occupies a lot of space. In some cases, your device might be running on low hardware. So, it can cause issues like your devices to lag or not function properly.

Here are some steps to follow and disable this option.

  1. Navigate to the three-dotted lines.
  2. Click on Settings.
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  3. On the left-hand side panel, select the Advanced option.
  4. Under the advanced section, select System.
  5. Disable the ‘Hardware Acceleration’ by switching off the toggle.
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To make the changes, effectively close your web browser and restart your Chrome browser. Now, you can check if the video playback error is resolved.

Use Incognito or Safe Mode

Many minor issues like audio and playback errors can occur if there’s an excessive amount of plugins and add-ons in your browser.

While in incognito mode, your browser does not save your history, caches, or add-ons. All these functions are temporarily disabled when you switch to an incognito window. With this mode on, it automatically also turns off the Hardware Acceleration Toggle.

Follow these easy steps to open up an incognito window.

  1. Go to the three-dotted lines on the far-right screen.
  2. From the list of options, select the New Incognito Window.
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You can also turn on incognito or safe mode by going to your browser and using the shortcut Ctrl+Shift+N.

If the video file starts playing when you switch to incognito, the issue must be in the browser settings.

Clear Out Browser Cache Files, Cookies, and Data

Google Chrome uses the browser history to streamline easy access. The cache files & cookies help load websites faster for a better user experience. But sometimes, these data can lag and cause video playback errors. To resolve this issue, head on to your browser settings and clear out your data.

Follow along with these steps:

  1. Head on over to the three-dotted lines on the top right of your browser.
  2. Select Settings from the list of options.
  3. Go to Security and Privacy.
  4. Click on the Clear browsing data section.
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  5. Go to the Advanced tab.
  6. Tick off the clear browsing history, cookies, and cached images and files.
  7. Click on Clear Data.
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  8. Close all your Google Chrome windows and Restart your computer.

Frequently Asked Questions

Can I View HTML5 Videos From Mozilla Firefox?

Yes, Mozilla Firefox supports HTML5 videos . You can also view HTML5 videos through other popular web browsers like Internet Explorer, Google Chrome, Opera, and Safari.

How to Fix Unsupported Browsers Error?

If your browser doesn’t support HTML5 file and it’s showing an error then make sure you have enabled your JavaScript in your web browser. Here is a short guide explaining the step-by-step process.

  1. Navigate to the right corner and Select the three-dotted lines.
  2. Click on Settings.
  3. From the left-hand side panel, click on Security and Privacy.
  4. Under this section, click on Site Settings.
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  5. Scroll down to the content section and Click on Javascript.
  6. Make sure you have ticked the ‘Sites can use Javascript’.
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What Video Format Does HTML5 Support?

HTML5 only supports video formats that are in MP4, WebM, and Ogg. Video formats other than these will not support the webpage. It will show up as a “Video file error.”

Do I Need to Install HTML5 on My Computer?

No. you don’t require any additional application to install HTML5. You can start by opening a new file on any text editor and saving it as a .html file. Then you can run it in any browser that is compatible with HTML5.

How To Fix HTML5 Video Not Found (2024)

FAQs

How To Fix HTML5 Video Not Found? ›

Download the Supporting Codecs of HTML5

If your browser error "HTML5 video file not found", it means that your browser is not up to date or website pages does not have a suitable video codec. It would help if you communicated with the developer to solve the issue and install all the required codecs.

How to solve HTML5 video not found? ›

Download the Supporting Codecs of HTML5

If your browser error "HTML5 video file not found", it means that your browser is not up to date or website pages does not have a suitable video codec. It would help if you communicated with the developer to solve the issue and install all the required codecs.

How to fix file not found error in HTML? ›

Typically, the error is caused by problems with Chrome extensions. That means you need to troubleshoot your Chrome installation to fix it. To troubleshoot the ERR_FILE_NOT_FOUND error, we recommend starting by disabling your Chrome extensions. Then, it's worth removing any data left behind by these add-ons.

How do I fix an HTML5 video not properly encoded? ›

Turn Off Hardware Acceleration to Fix HTML5 Error

It will lower the unnecessary load on the browser and may fix video not properly encoded error. To toggle off the hardware acceleration, go to Settings from the three dots menu and select the System tab under the Advanced section.

How do I get rid of HTML5 error? ›

5 Ways to solve 'HTML5 Video File Not Found' error
  1. Update your browser.
  2. Remove cookies and cache.
  3. Toggle hardware acceleration.
  4. Start the browser in Safe Mode.
  5. Download supporting codecs.
Jun 12, 2024

How do I open HTML5 files in Chrome? ›

How to open an HTML file using Chrome
  1. Right-click on the HTML file you wish to see and select "Open with" from the menu. ...
  2. Choose Chrome from the list, then view your file in the app.
  3. If you have Chrome as your default browser, you can just double-click the HTML file and it opens in Chrome.
Jun 28, 2024

Which browser supports HTML5? ›

HTML5 is supported by all the major browsers, including Chrome, Firefox, Safari, Opera, as well as iOS for Chrome and Safari and Android browsers. It can even work with the older and less popular browsers like Internet Explorer.

Why is HTML5 video not showing in Chrome? ›

If you are bothered by HTML5 video file not found Chrome/Firefox/IE, delete caches and cookies and then watch your video again. Take Chrome as an example: Step 1: Click the three-dot menu and choose Settings. Step 2: Click Clear browsing data from the Privacy and security section.

How do I get rid of HTML error? ›

Common HTML errors

Warning: <table> lacks "summary" attribute You can remove this warning by adding summary="" attribute to table tags in your template and document. Warning: trimming empty <span> Most HTML tags have opening and closing tags. If you see this warning, the closing tag is missing.

How to download HTML5 video file? ›

A Simple Way:

Just right click the video frame that is playing the video, and select "Copy Video URL" (depending on the browser you use) and paste the link in the address bar, and the browser should ask you to save the file.

What is the error HTML not found? ›

404 not found is an HTTP status code error that indicates the specific page you are trying to visit is non-existent. Usually, it occurs when the domain points to an incorrect DNS address, files or folders have misconfigured permissions, or the system runs a corrupt . htaccess file.

How to insert HTML5 video? ›

You simply use the <iframe> tag. This specifies an inline frame, which contains an independent HTML. With this frame, you can embed a form, a webpage or a video from an external URL. It's primarily used to include resources from other domains or subdomains, but can also include content from the same domain.

What is the best format for HTML5 video? ›

Ultimately, you need your video in these format + codec combinations: MP4 (using H. 264), WebM (using VP9), or OGG (using Theora), in that order so that they can be used with the HTML5 <video> tag right away.

Why HTML5 error? ›

Browser compatibility Issues: If a video plays well on one browser but displays the "HTML5 video file not found" error on another, it indicates a browser compatibility issue. This error can also occur if the browser version you're using does not support the HTML5 video codec used on the website.

How to turn video into HTML5? ›

All it takes is 3 easy steps to convert any of your video to HTML5:
  1. Drag-n-drop video file to Easy HTML5 Video;
  2. Set poster image, select codecs, tune settings;
  3. Press "Start".

How to fix error code in html5_video 4? ›

When you see the 'Error code: html5_video:4 message,' you may need to check the supported codec on your browser. It is also best to keep the browser updated, as the older version does not support HTML5.

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