It also set off a nationwide debate about domestic abuse in Brazil, where almost a third of women say they have suffered violence. According to a 2017 nationwide survey, over half of the attackers were current or former partners.

“The video just reflects the levels of violence we have been documenting,” said Maria Laura Canineu, the Brazil director for Human Rights Watch. “What Brazil has to learn is that most of these cases are preventable. It is very rare that a murder is the first case of violence.”

The images also show the man, Luís Felipe Manvailer, trying to wipe blood stains off the elevator walls before driving away just as the police arrived. He was quickly apprehended and is being investigated for the murder of his wife of five years, Tatiane Spitzner. Mr. Manvailer denies the accusations, and he told the police that his wife jumped off the balcony.

One of the most shocking aspects of the videos is what viewers can’t see: the 15 minutes in which the fighting and beatings are believed to have continued and neighbors reportedly heard desperate screams for help.

Ms. Spitzner and Mr. Manvailer married in 2013. The authorities say they found no complaints filed against Mr. Manvailer before the episode in the southern Brazilian town of Guarapuava.