no video with supported format and MIME type found. What does this mean and how can I change this

The webserver might not be sending the correct MIME types. Depending on the server you may be able to add a .htaccess file with the following:

AddType video/webm .webm
AddType video/mp4 .mp4

If that doesn't work try searching for "server mime types".

Go to IIS Manager. Click MIME Types Under IIS. Click Add Button. Enter the following Details.

File Name Extension: .webm MIME Type: video/webm

Again Add, File Name Extension: .ogv MIME Type: video/ogg

And File Name Extension: .mp4 MIME Type: video/mp4

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