The FBI reportedly recorded phone calls in which Loughlin discussed the scheme with a cooperating witness and Desperate Housewives star Felicity Huffman.
Like Giannulli, who was released on $1 million bail Tuesday, Loughlin put up her home for collateral as part of the bond.
The old video comes to light following reports earlier in the day that alleged the "Full House" actress and Felicity Huffman were just a handful of parents who had been named in a college admission scandal that included people paying up to $6.5 million to get their kids into elite universities. Prosecutors say those were false claims as neither daughter has participated in the sport.
In some cases, parents allegedly took part in Singer's scheme to bribe college coaches and athletic officials.
While students have not been charged, Giannulli, Loughlin and Huffman have been charged with conspiracy to commit mail fraud and honest services fraud. Prosecutors in the USA attorney's office in Boston say his company, Edge College & Career Network, made $25 million since embarking on the fraud in 2011, offering what he promised was a "guarantee" of admission.
Center was accused of taking up to almost $100,000 to get a student into school by listing him as a tennis recruit and offering him a scholarship for books.
Lori allegedly "agreed to pay bribes totalling $500,000 in exchange for having their two daughters" - Isabella Rose Giannulli and Olivia Jade Giannulli - "designated as recruits to the USC crew team - despite the fact that they did not participate in crew - thereby facilitating their admission to USC", the documents stated.
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The lawsuit also named the University of California, Los Angeles, Wake Forest, Georgetown University and others.
Loughlin's daughter has since returned to Los Angeles to face the allegations that could result in her getting expelled from USC, the Daily Mail reported. In telephone conversations intercepted by investigators, Singer brags he helped 760 students in just the first few months of 2018 and 96 the year before, while in other conversations he reassures parents that he has helped more than 20 or 30 other students cheat in recent years. "Additionally, the university is reviewing its admissions processes broadly to ensure that such actions do not occur going forward".
And while Olivia Jade said she loves school, she admitted that it was her parents who pushed her into pursuing higher education at the University of Southern California, where she is a freshman, despite her booming social media career.
The University of Texas at Austin said men's tennis coach Michael Center was placed on leave "as soon as we learned of the charges against him, which are being fully investigated".
Loughlin and Giannulli were charged on Tuesday, as well as more than 40 other people.
"I will say that the investigation remains active", prosecutor Lelling said. None of the schools or the students has been charged in the case.