iPhone SDK - 如何播放透明视频？ [英] iPhone SDK - How to play a video with transparency?

问题描述

我用蓝屏录制了一段视频。我们有将该视频转换为透明背景的软件。在自定义UIView上覆盖这个视频的最佳方式是什么？每当我在iPhone上看到视频时，它总会启动该播放器界面。有什么方法可以避免这种情况吗？

I recorded a video with a bluescreen. We have the software to convert that video to a transparent background. What's the best way to play this video overlaid on a custom UIView? Anytime I've seen videos on the iPhone it always launches that player interface. Any way to avoid this?

谢谢！

推荐答案

Don'我知道除了我之外是否还有人对此感兴趣，但我正在使用GPUImage和Chromakey过滤器来实现这一点^^ https://github.com/BradLarson/GPUImage

Don't know if anyone is still interested in this besides me, but I'm using GPUImage and the Chromakey filter to achieve this^^ https://github.com/BradLarson/GPUImage

编辑：我所做的示例代码（现在可能已过时）：

example code of what I did (may be dated now):

-(void)AnimationGo:(GPUImageView*)view {
    NSURL *url = [[NSBundle mainBundle] URLForResource:@"test" withExtension:@"mov"];

    movieFile = [[GPUImageMovie alloc] initWithURL:url];
    filter = [[GPUImageChromaKeyBlendFilter alloc] init];

    [movieFile addTarget:filter];

    GPUImageView* imageView = (GPUImageView*)view;
    [imageView setBackgroundColorRed:0.0 green:0.0 blue:0.0 alpha:0.0];
    imageView.layer.opaque = NO;
    [filter addTarget:imageView];

    [movieFile startProcessing];

    //to loop
    [imageView setCompletionBlock:^{
        [movieFile removeAllTargets];
        [self AnimationGo:view];
    }];
}

我可能不得不稍微修改一下GPUImage，它可能无法使用最新版本的GPUImage，但这就是我们使用的

I may have had to modify GPUImage a bit, and it may not work with the latest version of GPUImage but that's what we used

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