How to edit mp4 tags in video files?

I can find lots of programs to edit tags in audio files but does anyone know of something that works to edit titles etc in mp4 video files?

Answering my own question. You can right click and edit the title from properties if it is local. I was trying to edit the file on a server which did not work.

What about changing other values on videos that when you click beside what you want to change no box appears to type in. And what does "if it is local' mean?