encoding – How to create slow frame rate video from image sequence?

I made a set of timelapse .jpg images using a Canon Rebel camera & Magic Lantern. I want to turn it into an .mp4 video.

I understand that Quicktime v10.5 can do this, but the slowest frame rate is about 24 frames per second. I want frame rates of only 6 or even 2 frames per second. I used to use Quicktime v7 but it will not run on Catalina anymore.

What Catalina software will create a 2 frames/sec video from an image sequence?