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.
HTML5 is an enhanced version of HTML (HyperText Markup Language). As the next level to HTML, HTML5 has incorporated video and audio specifications, 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.
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.
There are could be multiple reasons that could be held responsible to get an ‘HTML5 Video File Not Found’ error –
Thus, there are various reasons due to which the ‘HTML5 video not found’ error occurs.
Also read Error Solved: 5 Common Video Errors
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.
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
|<HTML5 video>||Google Chrome||Internet Explorer||Mozilla Firefox||Safari||Opera|
|Version 25 partially supports||Version 9 and 11||Version 2 to 20 partially supports||Version 3.1 to 6 partially supports||Version 10.1 to 12.1 partially supports|
|Version 26 to 70 completely supports||Version 21 to 63 completely supports||Version 6.1 to 12 completely supports||Version 15 to 53 completely supports|
To check if you’re using an updated version of Chrome do the following:
Similarly, you may check and update other browsers too.
Clearing the cache and cookies in the browser helps most of the time. Although, cache and cookies stored in a browser’s directory serve to provide a better user experience, but sometimes it leads to errors while playing multimedia files. Try to view the video again after deleting the cache, cookies and browser history.
In Google Chrome, you can do the following to delete cache and cookies:
Figure: Under Google Chrome Settings click on ‘Clear browsing data’
Figure: Tick the checkboxes to clear all cache data
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
Hardware acceleration helps in opening graphics-intensive media like games and videos etc., in the browser.
When you turn-off the hardware acceleration in a browser, only your computer’s GPU (Graphics Processing Unit) will be used to process all the graphics-intensive media. This lowers the load on the browser and may fix HTML5 video error.
In Google Chrome, you can disable hardware acceleration by following the below steps:
Figure: Click on ‘System’ under ‘Settings’ in Chrome
Figure: Toggle-off the ‘Use hardware acceleration when available ‘
Now try to your videos in browser. It should not give ‘HTML5: Video file not found’ error.
You can disable hardware acceleration for other browsers too in their setting.
Starting the browser in Safe Mode usually resolves many problems. Safe Mode may not fix the HTML5 issue, but you may know the cause of the problem and find a solution.
So what happens to the browser in Safe Mode?
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.
An ‘HTML5: Video file not found’ error indicates either the browser you are using doesn’t support HTML5 or the webpage doesn’t have the proper video codec.
You may contact the website’s developer to install HTML5 supporting codecs for all the three WebM, MP4, and OGG formats.
In case you are an Internet user who witnesses this error, then ensure using the updated browser that supports HTML5. Further, if the error persists, try the other ways given in this post to fix the issue.
What worked for some, might work for you too!
‘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.
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.
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.
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