I'm making a timelapse sequence on my iPhone 5s. It looks good enough when it's bright outside, but when the sun sets, the video quality really suffers due to the poor low-light performance of the camera.
I wanted to check if it's possible to merge a dozen or so adjacent photos into one, with median blending, to reduce the noise. This reduces the number of photos by 12x, but keeps the resolution the same.
This should have another positive side-effect, which is fixing the extremely abrupt and unnerving movement of people and vehicles that you see in timelapse videos.
Is there software that can do this? I'm looking at Mac software, not command-line, and either free or cheap (like $20, not like $100). I already have Lightroom, iPhoto, Picasa and iMovie. I'm also looking at a one-click tool, not something involved that requires me to make multiple attempts with different settings to see what works well.
The timelapse app I'm using can either generate 4K video or a sequence of photos, which I'm looking to use as input to the noise-reduction tool.