The video, sourced from the Indian Army, captured the three terrorists walking using a long shot lens from behind what appears to be a line of pine trees.
Kannika Kamton, 25, is reported to have approached the holidaymaker on an open-back bus in Thailand and before the man could react, the intoxicated prostitute attacked him.
32-year-old Supachai Wongfaed was found lying in a pool of blood with his body ripped in half and the mighty mammal, a 20-year-old male elephant, standing over it.