On a summer day last August, Katlyn Kinateder called 911 and told dispatch she killed her two-year-old son.
The video resurfaced in court Tuesday, on the opening day of Kinateder's trial for a charge of first-degree intentional homicide.
But attorney's aren't debating whether Kinateder killed her son.
Instead, they're arguing whether or not she is mentally responsible for the crime.
Kinateder's defense says she suffers from a mental disease and has bipolar disorder.
A psychiatrist they called to the witness stand explained to the court his belief, saying mental illness and a deepening depression made Kinateder unable to control her behavior.
Prosecutors plan to call a psychiatrist to the witness stand Wednesday to dispute those accounts.
They argued in opening statements that Kinateder's chronic marijuana consumption may have brought on a euphoric state, not letting her stop the impulse to kill her son.
Kinateder's ex-boyfriend told the court the couple smoked multiple bowls every night.
If a judge finds Kinateder mentally responsible for this crime, she could face life in prison without parole.
There is no jury in the case.