Question

使用AVFoundation在iPhone模拟器中录制音频时出现以下错误。我的代码在设备上运行良好。

有什么想法吗？提前谢谢。

2012-09-15 17：51：39.592 MySpellings [538：3503]加载错误   /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn：   dlopen的（/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn，   262）：找不到符号：__ CFObjCIsCollectable引用自：   /System/Library/Frameworks/Security.framework/Versions/A/Security
  期望：   /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation   在/System/Library/Frameworks/Security.framework/Versions/A/Security中   2012-09-15 17：51：39.598 MySpellings [538：3503]加载错误   /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn：   dlopen的（/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn，   262）：找不到符号：_ _CFObjCIsCollectable引用自：   /System/Library/Frameworks/Security.framework/Versions/A/Security
  期望：   /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation   在/System/Library/Frameworks/Security.framework/Versions/A/Security中   2012-09-15 17：51：39.607 MySpellings [538：3503]加载错误   /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn：   dlopen的（/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn，   262）：找不到符号：__ CFObjCIsCollectable引用自：   /System/Library/Frameworks/Security.framework/Versions/A/Security
  期望：   /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation   在/System/Library/Frameworks/Security.framework/Versions/A/Security中   2012-09-15 17：51：39.612 MySpellings [538：3503]加载错误   /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn：   dlopen的（/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHALPlugIn.bundle/Contents/MacOS/AppleHDAHALPlugIn，   262）：找不到符号：_ _CFObjCIsCollectable引用自：   /System/Library/Frameworks/Security.framework/Versions/A/Security
  期望：   /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation   在/System/Library/Frameworks/Security.framework/Versions/A/Security中   2012-09-15 17：51：40.932 MySpellings [538：4907] aq @ 0xea13200：   ConvertInput：AudioConverterFillComplexBuffer返回560226676，   packetCount 21 2012-09-15 17：51：42.254 MySpellings [538：c07]潮红   待处理输入终止 - 错误'！dat'

Answer 1

在我的情况下，显示错误是因为我使用了错误的比特率：

我忘记了我使用了Kbps而AVEncoderBitRateKey使用了bps。因此，在我将比特率乘以1000后，错误就消失了。

Answer 2

当录制为m4a格式（AVFormatIDKey = kAudioFormatMPEG4AAC）时，我在模拟器中录制音频也遇到了问题。没有录制音频，控制台日志包含＆＃34; AudioConverterFillComplexBuffer＆＃34;的错误。

然而，录制到.caf格式（kAudioFormatAppleIMA4）确实有效，这可能是某些人的解决方案。

recordSettings = [NSDictionary
                  dictionaryWithObjectsAndKeys:
                  [NSNumber numberWithInt:AVAudioQualityMin],
                  AVEncoderAudioQualityKey,
                  [NSNumber numberWithInt:16],
                  AVEncoderBitRateKey,
                  [NSNumber numberWithInt: 1],
                  AVNumberOfChannelsKey,
                  [NSNumber numberWithFloat:16000.0],
                  AVSampleRateKey,
                  [NSNumber numberWithInt: kAudioFormatAppleIMA4],
                  AVFormatIDKey,
                  nil];

在iPhone模拟器中录制音频时出错

2 个答案: