Aaron Carter boxing video?? COME GET IT!!!
TMZ Sports has obtained footage of the pop star training for his huge fight against Lamar Odom ... and look, the guy's no Floyd Mayweather -- but you can tell he's busting his ass to be ready for the ring!!
We're told AC has been training with MMA fighter Jesse Strader for the June 12 bout ... working on his combinations, building some muscle and getting in some cardio.
It's clear in the video, Carter is taking this fight seriously .