AVAssetWriterInput视频未获取

Question

我使用AVAssetWriter生成图像到视频，这是我的编写器设置

NSDictionary* videoSettings = [NSDictionary dictionaryWithObjectsAndKeys:
                               AVVideoCodecH264, AVVideoCodecKey,
                               [NSNumber numberWithInt:self.frame.size.width], AVVideoWidthKey,
                               [NSNumber numberWithInt:self.frame.size.height], AVVideoHeightKey,
                               videoCompressionProps, AVVideoCompressionPropertiesKey,
                               nil];
videoWriterInput = [[AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings] retain];

我的输入图像缓冲图像，

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但生成的mov文件如下所示

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Answer 1

我使用AVAssetWriter生成图像到视频，我的编写器设置刚刚修改。

NSDictionary* videoSettings = [NSDictionary dictionaryWithObjectsAndKeys:
                               AVVideoCodecH264, AVVideoCodecKey,
                               [NSNumber numberWithInt:imageView.size.width], AVVideoWidthKey,
                               [NSNumber numberWithInt:imageView.size.height], AVVideoHeightKey,
                               videoCompressionProps, AVVideoCompressionPropertiesKey,
                               nil];
videoWriterInput = [[AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings] retain];