Rename files during upload within Wordpress backend

Question

is there a way to rename files during the upload progress within the Wordpress 3.0 backend? I would like to have a consistent naming of files, especially for im

Answer 1

http://wpapi.com/change-image-name-to-wordpress-post-slug-during-upload/

BTW:

Add filter to sanitize_file_name is totally wrong, as sanitize_file_name() function is a helper function to format string, it may be used elsewhere like plugins or themes.

function wp_modify_uploaded_file_names($file) {
    $info = pathinfo($file['name']);
    $ext  = empty($info['extension']) ? '' : '.' . $info['extension'];
    $name = basename($file['name'], $ext);

    $file['name'] = uniqid() . $ext; // uniqid method
    // $file['name'] = md5($name) . $ext; // md5 method
    // $file['name'] = base64_encode($name) . $ext; // base64 method

    return $file;
}

add_filter('wp_handle_upload_prefilter', 'wp_modify_uploaded_file_names', 1, 1);