I really like Camect, but an ongoing frustration for me is that the hit areas of the controls are too fiddly.
At a basic level, I think all of the in-video controls should be double the size, to make it easier to click them (on my Mac). The buttons each have 16 pixels of height, which is a little tight; more like 24 or 32 would be easier.
The timeline is worse, though: it only has 9 pixels of height, so when moving the mouse pointer along the timeline bar to click a time, any vertical drift will go beyond the clickable area, making it more fiddly to click.
I realize you don't want the buttons covering too much of the video, but you could extend the clickable region beyond the drawn border, or draw the border with some transparency. For the bar, I know you can't extend the clickable region above the bar, due to the quick review and zoom buttons, but you could make the entire area below the bar clickable, to the bottom of the video. Or could move the review and zoom buttons upwards a bit.
If you didn't want to adjust the size of the controls for some reason, another idea could be to only double their sizes on the single-camera views. Tiny controls on a camera view displayed full-screen on a 27" display looks punitive.