BEIJING - Baidu, Inc., China's largest search engine, is being sued for providing pirated links to and pirated broadcast of online videos as part of a class action to stop piracy.

Participants in the suit include China's leading online video providers - Youku Tudou Inc., Tencent and Souhu.com Inc. - the China Film Copyright Association and the Motion Picture Association of America.

The group is suing Baidu for 300 million yuan ($50 million) for losses caused by the company's practices, according to a statement at the campaign launch here on Wednesday.

The same coalition has already instigated more than 100 lawsuits against copyright violations by Baidu and Shenzhen QVOD Technology Co. for "increasingly serious" online video piracy, the statement said.