The Dallas company also says it agreed to a new forbearance agreement with debtholders that will give it more time as it seeks to recapitalize.
Quarterly net loss widened to $69 million, or 32 cents per share, from $37 million, or 21 cents per share, last year.
Revenue slipped to $788 million from $982 million.
Blockbuster has tried to revamp its offerings due to tough competition in the movie-rental sector. In August it launched a service with Comcast to offer DVDs by mail. It also offers video games by mail.
Blockbuster says its forbearance agreement is effective until Sept. 30.