Title: Error message on mobile
Last modified: December 1, 2020

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# Error message on mobile

 *  [wissmannconsulting](https://wordpress.org/support/users/wissmannconsulting/)
 * (@wissmannconsulting)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/error-message-on-mobile/)
 * Dear support-team, I love your plugin, but unfortunately there is a error message
   on mobile. It says “Media error: Format(s) or source(s) not found. Download file
   XXXnames-of-all-files”
 * On desktop everything works fine.
    I use the Divi theme.
 * Do you have an idea?
 * Thanks in advance,
    Frank

Viewing 1 replies (of 1 total)

 *  Plugin Author [team-ok](https://wordpress.org/support/users/team-ok/)
 * (@team-ok)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/error-message-on-mobile/#post-13732717)
 * Hi,
    this error message isn’t generated by the plugin, but by the WordPress Video
   Player (i.e. the underlying medialement.js library). Please check if your video
   file is natively playable on all devices. You could try a test file from [here](https://gist.github.com/jsturgis/3b19447b304616f18657)
   to see if it could be related to any format or conversion issues. Maybe you could
   use webm instead of mp4 or try a different mp4 converter.
 * Somebody on [stackoverflow](https://stackoverflow.com/questions/49173535/wordpress-media-error-formats-not-supported-or-sources-not-found)
   says to have solved it by changing the filenames.

Viewing 1 replies (of 1 total)

The topic ‘Error message on mobile’ is closed to new replies.

 * ![](https://ps.w.org/switch-video-quality/assets/icon-128x128.png?rev=1233901)
 * [Switch Video Quality](https://wordpress.org/plugins/switch-video-quality/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/switch-video-quality/#faq)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/switch-video-quality/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/switch-video-quality/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [team-ok](https://wordpress.org/support/users/team-ok/)
 * Last activity: [5 years, 6 months ago](https://wordpress.org/support/topic/error-message-on-mobile/#post-13732717)
 * Status: not resolved