Actors usually sign away their rights when contracting to do a movie, but Garcia didn't and she wasn't Youssef's employee. I'd therefore find that Garcia acquired a copyright in her performance the moment it was fixed. When dealing with material created during production of a film or other composite work, the absence of a contract always complicates things. See Effects Associates, 908 F.2d at 556 ("Moviemakers do lunch, not contracts."). Without a contract the parties are left with whatever rights the copyright law gives them. It's not our job to take away from performers rights Congress gave them. Did Jimi Hendrix acquire no copyright in the recordings of his concerts because he didn't run the recorder in addition to playing the guitar? Garcia may not be as talented as Hendrix—who is?—but she's no less entitled to the protections of the Copyright Act.
B. While the Copyright Office claims that its "longstanding practices" don't recognize Garcia's copyright interest, it doesn't seem that the Register of Copyrights got the memo. The Register was a member of the U.S. delegation that signed the Beijing Treaty on Audiovisual Performances. See U.S. Copyright Office, Annual Report of the Register of Copyrights 8 (2012). The Treaty would recognize Garcia's rights in her performance. It provides that "performers" have the "exclusive right of authorizing . . . the fixation of their unfixed performances," and "reproduction of their performances fixed in audiovisual fixations, in any manner or form." World Intellectual Property Organization, Beijing Treaty on Audiovisual Performances, Art. 6(ii), 7 (2012).
The Patent Office, which led the delegation, states that U.S. law is "generally compatible" with the Treaty, as "actors and musicians are considered to be 'authors' of their performances providing them with copyright rights." U.S.