Summary

Unable to play mp4 in Chrome and Firefox

Steps to Reproduce

1. While using Chrome/Firefox, add mp4 file in any Jira issue
2. Once mp4 file added, try to preview it

Expected Results

MP4 video will be preview

Actual Results

• Unable to preview the file
  
• Browser console show the following error

  VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) The video could not be loaded, either because the server or network failed or because the format is not supported. 
  
  Uncaught (in promise) DOMException: Failed to load because no supported source was found.
  

Workaround

• Use Edge or Safari
• Alternatively, you can also download the file and play it using an app form your machine