Could you tell me when will the film start还是could you tell m

could you tell me when the film will start?正确
第一个句子错在:when will the film start。这句话单写是对的,是特殊疑问句,但如果放在宾语从句中,应该用陈述语序,既:主语 + 谓语,所以应该改成:Could you tell me when the film will start 你能告诉我电影什么时候开始吗