mattkprovideo.com/2018/02/19/what-is-a-motion-comic/

What IS a “Motion Comic”?  It is a video made of a comic book. It is not full animation, it is not even ‘limited animation’.  It is almost like someone pointed a video camera at comic book panels, edited them together and posted it to youtube. A motion comic is usually accompanied by old-timey radio show style audio. Actors reading the lines, sound effects added in, etc..

In most cases, the original comic book artwork is scanned in to a computer. The art files (drawings) are brought into Adobe Photoshop and the different parts of the line art are seperated into different layers.  The Photoshop layers are then moved and animated in Adobe After Effects.

https://en.wikipedia.org/wiki/Motion_comic