Little Mac App to create video caps (ffmpeg)

Job ID: 34360005

Budget: $10 – $30 USD

Hello,
I need a little Mac App coded that creates a number of screenshots (caps) from videofiles I define.
I want the files to added via drag & drop and I need to define per videofile the number of caps, the width of the cap in pixels (height will be calculated accordingly) and the output folder.
The name of the output cap MUST be exactly like the name of the videofile followed by _001 for the first cap, _002 for the second etc.
I can also remove droped files from the list and I see the status in % next to the file.

Please have a look at the design I created to better show what I'm looking for.
I can already do this with ffmpeg library and my terminal but I would like the app to do it more conveniently.
Please use the keyword 'cap' in your quote to show that you have read the jobdescription.
Max budget is $30.
I have an M1 mac, if that's important to know.
Related categories: Cocoa Mac OS Swift App Developer Apple Xcode