avidemuxcli3, how to resize videos?

[I12learn]

Hello,
I'd like to apply resizing to a bunch of video, via batch it's preferred.
I saw in the package some ready functions, like */share/ADM_scripts/video/filter.js.
Here's the question, I'm not aware of ECMA scripts, how to make a script which will be loaded at the CLI and proceed to do me the right processing.
Basically I'd like to have to try out some options

• First size about 800x480 (the bigger will be reduced and then keep the aspect ratio(AR)
• Second size maximum width of 1280 the other dimension to reduced with AR
• If original dimensions are below requested ones, nothing to apply

I think some beginning should be like

Code Select Expand

//AD

include("video/filter.js");

var app = new Avidemux();
But the rest is uncertain. I'd like rather to think as tinypy script, but where'll be the difference?
Meanwhile I'll try something