AVVideoProfileLevelH264High41破解iPhone 4

有人知道如果高分辨率的压缩在iPhone 4上不起作用,苹果文档只说明它需要iOS6或更高版本.

> 2013-12-10 18:26:37.637 VideoCompression[677:3707] *** TerminaTing app

> due to uncaught exception 'NSInvalidArgumentexception',reason: '***

> `-[AVAssetWriterInput initWithMediaType:outputSetTings:sourceFormatHint:]` For compression
> property ProfileLevel,video codec type avc1 only allows the following

> values: H264_Baseline_1_3,H264_Baseline_3_0,H264_Baseline_3_1,> H264_Baseline_4_1,H264_Main_3_0,H264_Main_3_1,H264_Main_3_2,> H264_Main_4_0,H264_Main_4_1,H264_Main_5_0,H264_High_5_0,> H264_Baseline_AutoLevel,H264_Main_AutoLevel,H264_High_AutoLevel'

> *** First throw call stack: (0x2fd76f4b 0x3a1066af 0x2ec5d833 0x2ec5d70b 0x2ec5d67d
 0xbd001 0xbba59 0x3a5e9d1b 0x3a5ea293 0x3a5ea6f7

> 0x3a5fc8f9 0x3a5fcb79 0x3a72bdbf 0x3a72bc84) libc++abi.dylib:

> terminaTing with uncaught exception of type NSException
NSDictionary *codecSetTings = [NSDictionary DictionaryWithObjectsAndKeys:
                                           [NSnumber numberWithInteger:[bitrateTF.text intValue]],AVVideoAverageBitRateKey,[NSnumber numberWithInt:[maxkeyframeintervalTF.text intValue]],AVVideoMaxKeyFrameIntervalKey,**AVVideoProfileLevelH264High41,AVVideoProfileLevelKey,**
                                           videoCleanApertureSetTings,AVVideoCleanApertureKey,videoAspectRatioSetTings,AVVideoPixelAspectRatioKey,nil];

NSDictionary *videoSetTings = [NSDictionary DictionaryWithObjectsAndKeys:
                                       AVVideoCodecH264,AVVideoCodecKey,AVVideoScalingModeResizeAspectFill,AVVideoScalingModeKey,codecSetTings,AVVideoCompressionPropertiesKey,[NSnumber numberWithInt:[widthTF.text intValue]],AVVideoWidthKey,[NSnumber numberWithInt:[heightTF.text intValue]],AVVideoHeightKey,//AVVideoScalingModeFit,nil];
self.assetWriterVideoInput = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSetTings:videoSetTings];
self.assetWriterVideoInput.transform = self.transformAssetWriter;
[self.assetWriter addInput:self.assetWriterVideoInput];