You can use live wallpaper with xposed and gravity box, also you will need to download GEM module and with some settings make live wallpaper posible on aosp lockscreen, its really nice, im using it.
Ive done it through gem now it needed an update but I wanted live wallpaper on stock lockscreen and if that cant be done then is there a way to have a different live wallpaper on aosp lockscreen compared to the one on xperia home