Weinstein, 70, was kidnapped from his home by armed men in Lahore, Pakistan, last August. The former Peace Corps and U.S. aid official was working as Pakistan's country director for J.E. Austin Associates, a private Virginia-based firm that deals with international aid issues.
My life is in your hands, Mr. President, said Weinstein, who appears to be sitting on the floor with food in a white robe or tunic. If you accept the demands, I live; if you don't accept the demands, then I die.
In another video message posted on militant websites in December, al-Qaida leader Ayman al-Zawahiri called for the release of all al-Qaida and Taliban suspects around the world and said he would release Weinstein if the U.S. ceased airstrikes in Afghanistan, Pakistan, Somalia and Yemen.
Weinstein didn't specify any demands in the new video.
I've done a lot of service for my country, and I would hope that my country will now look after me and take care of me and meet the demands of the mujahedeen, Weinstein said.
When Weinstein was first kidnapped, J.E. Austin Associates said he was in poor health and asked kidnappers to provide him with a list of heart and other medications, according to The Associated Press.
In a direct message to his wife, Elaine, Weinstein also says in the video that I'd like her to know I'm fine and well and that I'm getting all my medications and being taken care of.