I fixed it myself – open functions.php from includes folder and fint the formats of the files. Add there this code 'flv' => 'video/x-flv', and you are ready to upload!
RESOLVED
For those looking for a cleaner solution that is free of upgrade issues, drop this into your plugin directory and activate it:
<?php
/*
Plugin Name: FLV Hack
Plugin URI: http://www.someplace.com/
Description: Quickie FLV hack/fix.
Version: 1.0
Author: Someone
Author URI: http://www.someplace.com/
*/
add_filter(“ext2type”, “FLV_Hack_ext2type”, 10, 1);
add_filter(“upload_mimes”, “FLV_Hack_upload_mimes”, 10, 1);
function FLV_Hack_ext2type($filters)
{
$filters[“video”][] = “flv”;
return $filters;
}
function FLV_Hack_upload_mimes($mimes)
{
$mimes[“flv”] = “video/x-flv”;
return $mimes;
}
?>
This does the exact same thing as editing functions.php to add FLV but without requiring you to apply the same mod to the WordPress core – plus it shouldn’t break even if WP includes this in the future. (The question becomes: Why isn’t FLV already in WP?!)
