Shot on April 23, 2017, the clip shows a makeshift target with the words "Boy" and "Girl" written on it, placed in the middle of the desert near Green Valley, Arizona, south of Tucson.
The New York Post reports that Dennis Dickey, 37, of Tucson, Arizona, pleaded guilty last month to igniting the fire, which caused more than $US8.2 million ($A11.3 million) worth of damage in April 2017 when he shot a target containing Tannerite, a legal but highly explosive substance created to detonate when shot by a high-velocity firearm.
He fired a rifle at a target that was supposed to reveal the gender of his unborn baby.
Exploding targets are prohibited on the Coronado National Forest, and any type of recreational target shooting isn't allowed on state land where the fire started, officials said.
A figure in the video, who is blocked out, is later seen running into the field as another person off-camera yells out, "Start packing up".
Dickey filled the target with Tannerite, a highly explosive substance which is legal but very powerful.
In September, Dickey pleaded to a misdemeanor violation of US Forest Service regulations and was sentenced to five years' probation according to CNN.
The resulting inferno burned through 47,000 acres and caused $8Million in Damages.
The damage was estimated to be more than $8 million. "It was probably one of the worst days of my life".
He agreed to pay $100,000 immediately and will make monthly payments going forward.