Difference between OGV and OGG

Question

I recently encountered a problem regarding the OGV file extension in Firefox. When using the extension in the source it returns a "No video with supported format or MIME types found" error in the player. But when just changing the extension from OGV to OGG it works. I didn't add the AddType in Apache.

Are the extensions interchangeable? Why does changing the extension from OGV to OGG works? Just a little confused.

Answer 1

check if your ogv-file plays in firefox (simply drag'n'drop the videofile to an open firefox-window). if it is playing normally, check if your server supports the MIME types and add them to your .htaccess file. check my answer here