@The Dark Defender
..... Glad that I was able to help ..... As regards boot animations in mp4 format, I have to say (but I'm no expert) that Motorola is the only phone or tablet that I have knowledge or know of that uses mp4 video files instead of jpg or png single frames. However even though Motorola uses mp4's you can still use conventional single frame jpg's if you wish.
As you probably know if you create an animation in mp4 then it has to be placed in the following folder in your Moto G ...../data/local/moodle ..... and the mp4 type of desc.txt (videodesc.txt) has totally different parameters to that used by single frame animations. Again be careful of the size.
The stuttering you are experiencing I can't be certain about, I believe it's a fault with the animation, I seem to recall seeing someone in one of the threads experiencing the same problem but I can't remember exactly where or when. To be on the safe side I would be wary of installing it. If you felt adventurous you could delete some of the last frames i.e. the blue ones after the writing "Welcome to Sword Art online" making it shorter. BUT don't rely on my suggestion in case you "brick" your device.
Best of luck with your Moto G and animations.