Josh Wolf returned to a federal prison in the East Bay city of Dublin yesterday after refusing to surrender the video outtakes he shot of a San Francisco political protest. Wolf, 24, was jailed for 31 days in September on a contempt conviction for refusing to give the video to a federal grand jury, but was released by a three-judge panel of appeals court judges who ruled that his appeal had a chance of succeeding. At the urging of prosecutors, that three-judge panel changed its mind Monday and revoked his bail. Two Chronicle reporters, who are refusing to identify the source of a grand jury transcript in the Barry Bonds steroids case, were sentenced yesterday to 18 months in prison, but will remain out of jail while their case is appealed by their employer, the Hearst Corp. In Wolf’s case, he has been receiving pro bono help from lawyers while friends have attempted to raise money through a legal defense fund. (Chronicle photo by Paul Chinn)