Is there a way to title the videos in a gallery?

I see there are some others who have asked this.. But most of the was old.

I am not a PHP programmer... is I need to update image.php, will need guideance.

I have a serials of 1 minute video clips. I simply want a short name below each one.

You can have the title of the video in the bottom of the player, below the controls. It is one of the options of the jPlayer plugin.

what about on the thumbail page?

You have to modify the theme for this. The general tutorial is here: https://www.zenphoto.org/news/theming-tutorial/
Details may vary depending on the theme used as any theme developer does and can do things differently.