The bus had 15 people, including the driver, on board at the time of the accident, which took place on October 28.
Rescuers lifted the wreck of the bus from the river on Wednesday night.
A 10-second clip from the on-board camera released by Chongqing police showed a female passenger yelling at the male driver while he was steering, shortly after 10 a.m. on Sunday.
Wanzhou district police said a 48-year-old woman had asked the driver to pull over after she missed her stop, but he didn't.
The first half is surveillance footage from the bus.
Authorities confirmed that at least 13 people have been killed after the bus veered onto the wrong side of the road and collided with an oncoming vehicle before smashing through roadside barriers and flying off a bridge in Chongqing's Wanzhou District last Sunday. She walked up to the driver's seat and scolded him.
Chelsea beat Lampard's Derby to reach League Cup quarters
The 40-year-old may have made his own fortune here as a player, but he certainly didn't have much on his return as a manager. Attention now turns back to league action this weekend and the manager wants his side to continue the good form built up.
A search and rescue operation was launched on the Yangtze river near Chongqing in southwest China on October 28.
Fifteen people had been on the bus, including the driver.
Originally, witnesses reported seeing the bus swerve to avoid another vehicle but distressing new footage has emerged showing the real cause of the accident: a fist fight between an irate passenger and the driver. The bus was also found to have no mechanical issues. The bodies of 13 people were recovered; two remain missing.
The woman then used her mobile phone to strike the driver's shoulder, while the driver used his right hand to stop her attack and restrain her.
Four passengers, who got off earlier, confirmed that a medium-height woman had quarrelled with the driver because she missed her stop, local police said.