How to Solve The HTML5 Video 'File Not Found' Error | Stellar (2023)

Summary: Are you unable to watch videos on Vimeo, YouTube, or other websites due to the ‘HTML5 Video File Not Found‘ error? It could be a web page backend issue or your browser does not support HTML5 videos. This post shares how best you can tackle the HTML5 video error problem and make your videos playable again in any browser.


  • What is a HTML5 video file?
  • What is HTML5 Video “File not Found” Error?
  • Why do you get an ‘HTML5 Video File Not Found’ error?
  • Howto fix ‘HTML5 Video: File Not Found’ error
  • Is Video not Playing in Firefox or Chrome?

What is a HTML5 video file?

How to Solve The HTML5 Video 'File Not Found' Error | Stellar (3)

HTML5is an enhanced version ofHTML (HyperText Markup Language). As the next level to HTML, HTML5 has incorporated video and audiospecifications, which now allows users to watch videos online without any plugins. The webmasters need to use special HTML5 coding and include WebM, MP4 and OGG formats on their web pages. Before HTML5 videos were only played using the Flash Player.

You can view HTML5 videos on all popular browsers such as Google Chrome, Internet Explorer, Mozilla Firefox, and Safari.

What is HTML5 Video “File not Found” Error?

If you encountered “HTML5 video not found” error while playing a video on any website then it implies your browser doesn’t support the HTML5 format codecs or your browser doesn’t have the proper video codec installed.

Why do you get an ‘HTML5 Video File Not Found’ error?

There are could be multiple reasons that could be held responsible to get an ‘HTML5 Video File Not Found’ error –

  1. Website’ Issue –
    HTML5 video error occurs when you try to watch a video embedded on a web page. It is mostly a website backend issue and is fixed by the webmaster or the developer of the site.
  2. Browser’s Issue –
    However, sometimes the problem could also be the browser. Below mentioned are there scenarios related to the browser –
  • The browser in which you are trying to view the video may not support HTML5 format codecs. You can check this, by playing videos on multiple browsers.
  • If you are able to watch the web page video in other browsers, it is the HTML5 compatibility problem with a particular browser. For example, a web page video may not open in Firefox and throw HTML5 video error. However, in Chrome it may play perfectly.
  • The possibility is also that the browser’s cache and cookies do not let the web page videos play. You can confirm this, if the video plays fine in the new Incognito window.

Thus, there are various reasons due to which the ‘HTML5 video not found’ error occurs.

Also read Error Solved: 5 Common Video Errors

Howto fix ‘HTML5 Video: File Not Found’ error

There are various ways to fix HTML5 video error. We suggest you to follow the order given here while troubleshooting – from simpler to complex solutions.

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

Method 1 – Update your browser

Not all web browsers support HTML5 videos. Ensure you are using an updated version of the browser.

Below are the popular browser versions that support HTML5

ElementHow to Solve The HTML5 Video 'File Not Found' Error | Stellar (4)How to Solve The HTML5 Video 'File Not Found' Error | Stellar (5)How to Solve The HTML5 Video 'File Not Found' Error | Stellar (6)How to Solve The HTML5 Video 'File Not Found' Error | Stellar (7)How to Solve The HTML5 Video 'File Not Found' Error | Stellar (8)
<HTML5 video>Google ChromeInternet ExplorerMozilla FirefoxSafariOpera
Version 25 partially supportsVersion 9 and 11Version 2 to 20 partially supportsVersion 3.1 to 6 partially supportsVersion 10.1 to 12.1 partially supports
Version 26 to 70 completely supportsVersion 21 to 63 completely supportsVersion 6.1 to 12 completely supportsVersion 15 to 53 completely supports

To check if you’re using anupdated version of Chrome do the following:

  1. OpenGoogle Chrome and click on the three vertical dots on the top-right corner
  2. ClickHelp > About Google Chrome
  3. If yousee an option Update Google Chrome, click on it. If not, your GoogleChrome is updated

Similarly, you may check and update other browsers too.

Method 2 – Remove cookies and cache

Clearing the cacheand cookies in the browser helps most of the time. Although, cache and cookies stored in a browser’sdirectory serve to provide a better user experience, but sometimes it leads toerrors while playing multimedia files. Try to view the video again afterdeleting the cache, cookies and browser history.

In Google Chrome, you can do thefollowing to delete cache and cookies:

  1. Open Chrome andclick on the three vertical dots on the top right
  2. Clickto follow Settings > Advanced > Privacy and security > Clear browsing data
How to Solve The HTML5 Video 'File Not Found' Error | Stellar (9)

Figure:Under Google Chrome Settings click on ‘Clear browsing data’

  • Choose and tick the checkboxes: Browsing history, Download history, Cookies and other site data, and Cached image and files
How to Solve The HTML5 Video 'File Not Found' Error | Stellar (10)

Figure: Tick the checkboxes to clear all cache data

  • To clear theentire cache, select All time in thetime range dropdown
  • ClickCleardata

Now restart your computer and try to play video in your browser.

For steps to remove cache and cookies in other web browsers, visit:Read More

Method 3 – Toggle hardware acceleration

Hardware acceleration helps in opening graphics-intensivemedia like games and videos etc., in the browser.

When you turn-off the hardware acceleration in abrowser, only your computer’s GPU (Graphics Processing Unit) will be used toprocess all the graphics-intensive media. This lowers the load on the browserand may fix HTML5 video error.

(Video) HTML5 Video "File Not Found" Error [FIXED] - 3 Solutions

In Google Chrome, you can disablehardware acceleration by following the below steps:

  1. Click onthe three dots on the right corner in Google Chrome
  2. Click tofollow Settings > Advanced > System
How to Solve The HTML5 Video 'File Not Found' Error | Stellar (11)

Figure: Click on ‘System’ under ‘Settings’ in Chrome

  • Toggle-offtheUse hardware acceleration when availableoption
How to Solve The HTML5 Video 'File Not Found' Error | Stellar (12)

Figure:Toggle-off the‘Use hardware acceleration whenavailable‘

  • Restart Chrome

Now try to your videos inbrowser. It should not give ‘HTML5: Video file not found’ error.

You can disable hardware acceleration for other browsers too in their setting.

Method 4 – Start browser in Safe Mode

Starting the browser in SafeMode usually resolves many problems. Safe Mode may not fix the HTML5 issue, butyou may know the cause of the problem and find a solution.

So what happens to thebrowser in Safe Mode?

  • In Safe Mode hardware acceleration is automaticallyturned-off
  • Few settings are reset
  • All add-ons, plugins etc., are disabled

If the video plays without any error or interruption in Safe Mode, it means any of these settings in your browser could be creating the problem. You can change those settings or disable the plugins or extensions that are creating the HTML5 video error.

Method 5 – Download HTML5 supporting codecs

An ‘HTML5: Video file not found’ error indicates eitherthe browser you are using doesn’t support HTML5 or the webpage doesn’t have theproper video codec.

You may contact the website’s developer to installHTML5 supporting codecs for all the three WebM,MP4, and OGG formats.

In case you are an Internet user who witnesses thiserror, then ensure using the updated browser that supports HTML5. Further, ifthe error persists, try the other ways given in this post to fix the issue.

Is Video not Playing in Firefox or Chrome?

What worked for some, might work for you too!

Here are couple of solutions, which various users found helpful when their HTML5 videos didn’t play in any browser.

How to Solve The HTML5 Video 'File Not Found' Error | Stellar (13)

‘I had HTML5 videos that would not play in Firefox. I was using an updated browser and removed cache and cookies too, but no help.

What I did: What worked for me was updating my video drivers. I have the NVIDIA GTS 240 driver on my computer. Downloaded and installed the latest one. Next, restart the computer and now Chrome 38.0.2125.77 started playing HTML5 videos again on YouTube, Vimeo, and others.

Is your video corrupt? Repair it with Ultimate Video Repair Tool

When the local video files saved in the hard drive, SD card, USB flash drive etc., are broken, not playing, or showing any error while opening, it indicates a corrupt file. To fix such not playing or error generating videos use Stellar Repair for Video — an efficient tool to fix any sort of video corruption including blurry, grainy, stuttering, black screen, no sound or out-of-sync videos.

About The Author

How to Solve The HTML5 Video 'File Not Found' Error | Stellar (16)

Sumona Chatterjee

Sumona is a tech blogger, avid photographer, & technogeek with vast experience in writing about media file recovery tips and tutorials. She has over 10 years of experience in media file recovery/media file repair technology. She is passionate about Photography, Creative Designing, Music, and Exploring lesser-known destinations.

(Video) How To Solve The HTML5 Video ‘File Not Found’ Error? | Video Tutorial | Rescue Digital Media

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  1. These are, in fact, enormous ideas regarding blogging. You have touched on some good factors here. Anyway, keep up writing.

    (Video) FIX: Your Browser Does Not Appear to Support HTML5


    1. Hi Scotty, Thanks for appreciating our editorial teams’ efforts to showcase such real scenarios where each of us gets stuck at times. We are happy to be of help to you.
      Stay tuned for more updates.


  2. Since this website’s writers are working, there is no uncertainty that it will soon be renowned due to its feature contents.


    1. Hi Serena,
      Thanks for appreciating our editorial teams’ efforts to showcase such real scenarios where each of us gets stuck at times. We are happy to be of help to you.
      Stay tuned for more updates.


  3. Some genuinely nice stuff on this website, I enjoy it.


    1. Hi Doris,
      We appreciate your genuine views on our published content. We believe in the serenity of our work to come up with solutions that our users face nowadays in there day to day life. Stay tuned for new updates.
      You can also comment below on your queries about which you want us to write.


    1. Hi Francesca,
      This error 224003 is a online video playback error. May be your browser doesn’t support the IMDB video file type. Ensure browser is updated. Also try to play again after removing cookies and cache. Turn off any adblockers or extensions in browser. Else, play videos in another browser.


  4. It’s happen to me couple of days ago when YouTube videos not playing in Firefox and any other browser. I update all windows PC but still didn’t found what the issue was. I seems your blog on Google and follow the steps and upgrade the graphics drivers to use hardware acceleration and It solved my problem. Thank you!

    (Video) How do I get my browser to support html5?


    1. Hi Matthew, Thanks for giving your valuable inputs!


  5. I had the same problem too. I solved it with the help of your blog using step 5 changing the setting after that I speed up the video. Thanks!


    1. Hi Mike, We really appreciate sharing your feedback with us!


  6. I cannot play the videos on YouTube due to enable show error “video unavailable”. I googling and I found your blog and solutions of the given problem. It’s really helpful for me. Thank you very much!


    1. Hi Brandon, Thanks for your feedback!


  7. Hi, I had the same issue with my Firefox, I’m using windows 10 and when I play video on YouTube through Firefox error message shows html5 video “file not found”. What should I do? Any suggestion would be appreciated.


    1. Hi Warren, I suggest you can update Windows to a newer version, for example, from Windows 10 Version 1803 to Windows 10 Version 1809, you’ll need to re-download and install the Media Feature Pack even though you installed it for the previous Windows version.



How do I fix HTML5 video file not found? ›

How Do I Fix HTML5 Video File Not Found? HTML5 video file-related errors can be fixed by updating your browser, clearing cookies and caches, toggling hardware acceleration, starting the browser in Safe Mode, and downloading compatible codecs.

How do I enable HTML5 in Chrome? ›

HTML5 is enabled by default in Chrome, so there is no need to enable it. If you are having trouble using HTML5 features in Chrome, the most likely cause is that the website you are trying to access is not using HTML5 correctly, or it is using features that are not supported by your version of Chrome.

Why is my video not playing in Chrome HTML5? ›

The easiest and fastest way to fix Chrome not playing videos is to ensure that Chrome is completely updated and restarted. If updating doesn't work, try clearing your cache and enabling Adobe Flash or Javascript.

What does HTML5 video not found mean? ›

If you come across an HTML5 page with the following error message “file not found,” then it means your browser doesn't have the proper video codec installed. For example, if you are using Google Chrome and you come across an HTML5 MP4 video, then you may get an error message because you don't have an MP4 codec.

Which browser supports HTML5 video? ›

HTML5 is now compatible with all popular browsers (Chrome, Firefox, Safari, IE9, and Opera) and with the introduction of DOCTYPE, it is even possible to have a few HTML features in older versions of Internet Explorer too.

How do I bypass HTML5 validation? ›

To ignore HTML validation, you can remove the attribute on button click using JavaScript. Uer removeAttribute() to remove an attribute from each of the matched elements.

Does Chrome support HTML5 video? ›

Chrome and Firefox do indeed support HTML5 video and the video object code is correct. So if the test page is not working the next step is to check that the server displaying the test page does indeed support MP4 files. Click to save and then restart the server.

How do I get HTML5 on my computer? ›

Getting Started with HTML5 Applications
  1. Using the IDE with the Chrome Browser. Installing the Extension from the Chrome Web Store. ...
  2. Using the Embedded WebKit Browser.
  3. Creating a NetBeans HTML5 Project.
  4. Installing and Using Bower.
  5. Editing the HTML File. Saving the Project as a Site Template.
  6. Summary.

How do I add HTML5 video to my website? ›

How to embed video in HTML
  1. Step 1: Edit your HTML. Go into edit mode for the page, post, or section of your website where you'd like to embed the video. ...
  2. Step 2: Copy your embed code. Next, copy your embed code. ...
  3. Step 3: Paste the embed code into your HTML.
Feb 19, 2022

How do I enable video in HTML? ›

HTML <video> Autoplay
  1. <video width="320" height="240" autoplay>
  2. <source src="movie.mp4" type="video/mp4">
  3. <source src="movie.ogg" type="video/ogg">

Why is my HTML file not displaying to the browser? ›

Check if the file is saved with a UTF-8 encoding. If that doesn't work, try installing another browser or using Edge/Safari/Internet Explorer or whatever built-in browser you have. It is saved as index. html.

How do I fix HTML5 video not found in Safari? ›

If you are getting the error HTML5 video not found, express that your browser does not support HTML5 video files. Or the webpage does not have the apt video codec. To get rid of the issue, you can contact the website developer and ask for the Supporting codec of HTML5 that supports WebM, Mp4, and OGG formats.


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