Rename Original Filenames of Uploaded Images and Videos on WordPress
Rename Media is a new WordPress plugin that allows you to rename image and video files after you upload them through WordPress.
When you directly upload a media file from your camera to a WordPress site, it carries with it the original filename. That is not changed even if you rename the title. This plugin ensures that the filename changes along with the title and doing so will also help in optimizing your site for search engines.