This video link was given to WFAA.com by representatives of the James familiy. We have found that it is Adam James in a electrical closet, but we do not know if it was during a practice.
According to the Youtube statement:
This video was taken by Adam James, a player on the Texas Tech Red Raider football team on Saturday, December 19th, after being confined by Coach Mike Leach in an electrical closet off the Press Room at Jones AT&T Stadium. James was suffering from a concussion received during an earlier scrimmage game. James was ordered to stand in the darkness until released several hours later. James momentarily turned on a light to record his surroundings with his cell phone.