How can I add a file type to the list of supported mime_content_type functions?

Question

PHP

For example, there is a sample.mkv file.
If we ask php about the mime-type of this file, we get "application/octet-stream". And the desired correct answer is " video/x-matroska ".
Is there some config in php itself, or in the OS, or in the web server, in which you can add the necessary matching lines?

Answer 1

apache\conf\mime.types