AVAssetWriterInput視頻拿不到

Question

我使用AVAssetWriter生成圖像的視頻，我的作家設置

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]; 

我輸入圖像緩衝區圖像，

但產生的MOV文件看起來像這樣

Answer 1

我使用AVAssetWriter生成影像，使用我剛剛修改過的作者設置。

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];