The entire video includes physical abuse of the woman, dragged by the neck and slapped.
The two carers, Piotre Ciecielowski, 26, and Pedro Dias, 21, have since been charged with abuse and received suspended jail sentences.
They have also been ordered to complete 250 hours unpaid work.
"I will never forgive myself for what I did to that lady. There is no excuse for what I did, I take full responsibility. I am totally ashamed," Dias told the Manchester Evening News.
"Until that night I had worked with the lady for many months. I liked her, she was a real character."
He says he has apologised to the family but his apology has not been accepted.
The woman's daughter called the men "evil and a disgrace".
