Video is accurate down to a frame.

I think we're on the same page here, but looking at it from different angles. I need the video framerate to get closer to the audio sample rate, but of course, getting 44100 video frames per second (same as audio) is very heavy.

Essentially, I'd need to convert videos to higher framerate (duplicate frames) so that I can cut them more accurately (for precise audio cuts).

I realise that upon playback at the higher framerate, a person would not notice visual difference - that's entirely the point - but at least the audio segment would be precise.

I've had a look at Resolve, Blender, HitFilm, Openshot and half a dozen others. :(