Clunking noise, with video

My '09 TRD Off Road has started making this clunking noise when driving. It sounds like it comes once per revolution of the wheel. It comes and goes and I can usually only hear it when driving next to a wall and the sound bounces back to me. I could even hear it on the highway driving about 30m mph next to a wall. It will happen in neutral or in gear, and appears to be only when moving forward. The truck is driving well otherwise.
I have linked a video, the clunks start at about 0:11 and goes to 0:17 when I go over the grate (ignore that noise).
Does anyone recognize this sound? My buddy says it might be a warped brake shield?

https://www.youtube.com/watch?v=Tn_mC2xEOjA&list=UU7XAarM-4lJx8PFPuqmo7Fw

Thanks for your help

 

Ok, A couple shots in the Dark.... Rock in the tire treads? Bad Tire - i.e. sidewall / tread radial flexing and ticking on broken belt. Perhaps a tire rim has a broken weld or crack that is ticking on each revolution???

I'd try rotating tires one axel at a time to see if the noise moves to the other side. This will at least eliminate the tires and wheels. Also spin the drums/disks by hand when the tire is off to see if you hear /feel something in the disk/drum and or pads shoes clicking per rev.

 

Listen to your Buddy.