I'm building a video editor for Windows, what features do you need?

The ability to apply filters / adjustments to pixel area sections of a video for a set number of frames.

Eg I want to lighten or darken or HSV adjust a limited area of the video for 400 frames. As opposed to applying an adjustment only to the full frame. Like using lassos, marquee selection, brushes, and so on in Photoshop or the equivalent.

Perhaps the ability to create pixel area adjustment layers (that sit over top of the video) with filters and then be able to apply those template layers only to a certain set of frames.

Nearly all video editing software lacks this type of granular ability; I assume because it's a pain to implement.

Basic editing should be easy, some times all i just need to cut some bad part and render the output. That's all

Also most of the people on hn will not be professional video editors. So we mostly want something easy to use for small editing tasks.

A beginner friendly interface I can teach my parents to use, with audio editing as an equal citizen. The options for doing simple multimedia are really lacking right now, and I'm tired of loaning my Adobe login info to friends and family so they can use Premiere which is complete overkill.

Support 60.00 Hz based frame rates and not just 59.97, and don't forget about 50 Hz as well. Think thoroughly about conversion between all of them when mixed source footage is used.

AWS S3 and m3u8 support. Let me point the editor straight to livestreams that are still being made/recorded.

Linux support :p

If it is really that simple and nice, I will probably recommend it to family though.

Accessibility features and translations.

will you be adding ability to record as well?