If you want to do video, forget youtube's "HD" - Vimeo is the place to go for that.
My main thought with this whole thing is similar to the light mover, but instead of moving the light to get the plants evenly lit you move the plants. It may not take more energy, if you have a proper pulley system. In fact a large gear at low rotation driving a much smaller gear would create a higher rotation you could feed along several belts to individual platters, like a simple pulley system.
It's also just a thought as an alternative to those that don't want to deal with a moving wire, which seems like a fire hazard (wire to the bulb.)