Consumers browsing the service, which was opened to the public, have uncovered links to full versions of feature-length movies, TV shows and other content. As of Thursday morning, much of that content could be watched in its entirety on Google's site.
"We encourage anyone who has a copyright concern or complaint to send us a DMCA content removal notice. However, if we see content in Google Video that clearly violates copyright we will remove it," according to a company statement.
A Google spokesman said the company is in the process of removing all material that violates copyright. By Thursday afternoon, most of the full-length studio and television content identified by users had been removed.
Coming just days after athat sharply strengthened Hollywood's legal hand against unauthorized movie distribution online, the incident highlights the dangers that Google is facing with its new service.
The new video search is designed not only to search what's already available on the Web, but to host video for producers that don't have the resources to post it themselves.
Web portals and Internet service providers that allow users to post their own content have been shielded from liability for copyright violations, as long as they remove violations when asked by a rights holder. However, Hollywood studios and record labels have been unhappy with the increasing ability of automated technology such as search engines and peer-to-peer technology to provide access to copyrighted material under these rules.
Much of the content uploaded to Google's search tool had been in the system for weeks. A watchable copy of "The Matrix Revolutions" was stamped with a June 9 upload time, and the "Family Guy" cartoons were uploaded on June 7, according to the Web page.
While the "Matrix" link was still up Thursday morning, the "play" buttons for screen captures of "The Simpsons" episodes had been removed.