I try to new MIME as MP4 movie. but core doesn't support as ext to MIME convert.
Don't you add MP4 MIMETYPE
Attached file were just added 2 lines below.
"m4v" => "video/x-m4v", // bluemoon
"mp4" => "video/mp4", // bluemoon
How did you try to upload the file ?
Core and base(legacy) don't have the function to upload misc file.
Only avatar and user batch upload is the exception.
I see your request !
There is using on xSNS module, but source is core.
$ext_to_mime = include(XOOPS_ROOT_PATH.'/class/mimetypes.inc.php');