I got about 30% through making something very similar then moved on to another project. This is very nicely done.
It is worth noting that I did a lot of research in this space when I was working on my own video editor and there are a lot of these now (I have about 30 in a spreadsheet). Ever since there was a ffmpeg WASM port many people have made these web based editors. It is so cool we live in a time where that kind of powerful technology is freely usable by others to build these tools.
My angle was to add gen ai video as a first class feature. That might be something you want to investigate now that video gen apis are becoming more common.
It is worth noting that I did a lot of research in this space when I was working on my own video editor and there are a lot of these now (I have about 30 in a spreadsheet). Ever since there was a ffmpeg WASM port many people have made these web based editors. It is so cool we live in a time where that kind of powerful technology is freely usable by others to build these tools.
My angle was to add gen ai video as a first class feature. That might be something you want to investigate now that video gen apis are becoming more common.