I want to develop a plugin for "live" thumbnails. Where do I start?

[Skytbest]

After trying to figure out how to make the thumbnail icons in the AndroidTV and mobile apps play a live preview of the video when you hover over it (similar to how Youtube does) I've realized this feature does not currently exist.

Trickplay does seem to get somewhat close but that's only for a thumbnail preview when scrubbing through a video you're already watching. I want a live preview to play before I select the video to watch. I'm thinking I could utilize the image files that Trickplay generates to do what I want.

My main question is where do I start with this? Do I need to fork an existing repo and build off of that? Should I start a brand new project? Does this sort of thing even sound feasible?

I'm a software developer already so I have the knowledge and basics of programming down, just never developed a plugin or anything like this before so need some guidance on how to get started.

Thanks

[Generator]

Not a developer, but you can start by looking at plugin template and API documentation.

https://github.com/jellyfin/jellyfin-plugin-template
https://api.jellyfin.org/

Adding live previews will probably need to modify or inject some code to the frontend