Questions about video editing and interfaces.

[JANDA-Developers]

I've heard @ffmpeg/ffmpeg that this library allows to edit videos on the client side.
And when I installed this and looked at the interface written in TS.
I was a little surprised. I expected there were methods like .cut .trim .startAt ...

From what I've found through googling and documentation, I understand that in order to run any command, I need to inject the Cli options using the run method.

Here are question one.
why methods are not specified?

For the second question, I still don't know how to edit it. It would be nice to have example code.

It seems that I did not understand the concept of this module properly.
I'd appreciate it if you could let me know what part I'm missing.

Thank you.