GPUImage如何播放音乐？

Question

我在startProcessing中播放视频。但是，我无法播放声音。

有没有办法播放音频？

以下是我的代码

NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"test" withExtension:@"mp4"];

GPUImageView *filterView = [[GPUImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 240)];

GPUImagePolkaDotFilter *filter = [[GPUImageSepiaFilter alloc] init];

GPUImageMovie *movieFile = [[GPUImageMovie alloc] initWithURL:fileURL];
movieFile.playAtActualSpeed = YES;[movieFile addTarget:filter];

[filter addTarget:filterView];
[self.view addSubview:filterView];
[movieFile startProcessing];