如果出现这个问题可以在初始化的时候不设置ContentURL

moviePlayerController_ = [[MPMoviePlayerViewController alloc] init];
moviePlayerController_.movieSourceType = MPMovieSourceTypeStreaming;
[moviePlayerController_.moviePlayer setContentURL:url];


原代码：（dingdone）

            NSString *titleStr = [mediaDic objectForKey:kMediaVideoTitleKey];

            NSURL *vodurl = [mediaDic objectForKey:kMediaVideoUrlKey];

            HGMoviePlayerViewController *mediaPlayerController = [[HGMoviePlayerViewController alloc] initWithFrame:self.view.bounds contentURL:vodurl initialType:HGMoviePlayerControlStyleFullScreen withController:nil];

            [mediaPlayerController alwaysHideComment:YES];

            [mediaPlayerController alwaysHideShare:YES];

            mediaPlayerController.contentTitle = titleStr;

            [AppNavigationController presentViewController:mediaPlayerController animated:YES completion:^{

            }];

播放MP4文件会闪退，改为

   NSString *titleStr = [mediaDic objectForKey:kMediaVideoTitleKey];

            NSURL *vodurl = [mediaDic objectForKey:kMediaVideoUrlKey];

            HGMoviePlayerViewController *mediaPlayerController = [[HGMoviePlayerViewController alloc] initWithFrame:self.view.bounds contentURL:nil initialType:HGMoviePlayerControlStyleFullScreen withController:nil];

            [mediaPlayerController setContentURL:vodurl];

            [mediaPlayerController play];         

            [mediaPlayerController alwaysHideComment:YES];

            [mediaPlayerController alwaysHideShare:YES];

            mediaPlayerController.contentTitle = titleStr;

            [AppNavigationController presentViewController:mediaPlayerController animated:YES completion:^{

            }];

闪退问题解决，黄底部分是修改的代码。