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.
    How To Fix HTML5 Video Not Found (1)
  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? ›

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.

How to solve HTML5 video not found? ›

So, follow the beneath techniques to solve the HTML5 video file issue.
  1. Use Latest Browser Version. ...
  2. Erase Caches and Cookies. ...
  3. Turn-off Hardware Acceleration. ...
  4. Use Safe Mode to Start Browser. ...
  5. Open HTML5 Video in Incognito Mode. ...
  6. Download the Supporting Codecs of HTML5.

How do I fix an HTML5 video not found on my iPhone? ›

  1. HTML5 video file not found: How to solve the issue.
  2. Find the video of other formats. Update your older version Browser. Switch off the Hardware Acceleration. Delete the Caches and Cookies. Operate the Browser in Safe Mode. Install the Supporting Codecs of HTML5.

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.

How to remove 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

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.

How to convert video to 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 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.

Does Safari support HTML5 video? ›

HTML5 Videos do not work in Safari on Mac or iOS, but work fine in other browsers.

What does HTML5 video 4 mean? ›

If you encounter an "Error code: html5_video:4" on your embedded player, it is most likely related to your pre-roll video. Below are some ways to fix this. Check that the pre-roll video that you have been using is still in the dashboard. To do this, go to media uploads and click on the pre-event video section.

What is the most recent HTML version? ›

HTML vs HTML5 – Comparison. Both HTML and HTML5 are hypertext markup languages, primarily used to develop web pages or applications. HTML5 is the latest version of HTML and supports new markup language functionalities such as multimedia, new tags and elements as well as new APIs.

What is unable to play video error 5? ›

Usually, Google Slides cannot play video and throw error 5 when the video file is corrupt or inaccessible. Error 5 can also occur due to no or slow Internet connection. A technical glitch or malicious extension in the browser where you are trying to open Google Slides can also result in video error 5.

Why is my video not working in HTML? ›

This issue is typically caused by an issue with the embed code being used in the Unformatted Text Part on the page. The source (src) URL in the embedded code must match the URL from the embedded code copied from the video source.

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