Here is a collection of 4:3 and 16:9 System and Collection Snaps. I did not make all of these, however I have churned out a lot of them. Depending on your theme, the different aspect ratio may be suitable.
In most cases each video runs 30-60 seconds in length and is designed as an intro to the system and to showcase some of the games on that system or in that collection.
Filmora Wondershare is a cheap tool if you want to make your own videos.
Almost 800 System and Collection Videos in 4:3 aspect ratio (640x480).
A huge thank you to David Marti who made most of these and has agreed to share them.
Around 30-60 seconds each to showcase example games for that system.
Similar to the 4:3 videos but obviously made at 16:9 ratio.
Around 30-60 seconds each to showcase example games for that system.
Again, a lot made by me but also by other contributors.
Over 600 videos in the link.