Question about loopable video

Hi video lovers!

What is the best method to modify a video to make it loopable?

I know I can do this manually in an editing software, by splitting the video in 2 parts and copying the beginning at the end, cropping the extra-frames and adding a fading/dissolve effect…

But is there another, easier way? Maybe an automatic method?

Also, how can I check fast if a video is perfect looped?

Thanks!

That is the easy way. Nothing automatic will generate good results.

How to check? In the same editing software you split it with. Not all videos can be made into a good loop, so naturally you need good starting material without too much movement, or with even/repetitive movement.