使用案例iOS的11 replaykit資產作家身份失敗隨機
我使用的是iOS 11 Replaykit框架,試圖從畫面記錄幀,並從應用程序和麥克風音頻。
問題
隨機,當我把我的.append(sampleBuffer)獲得AVAssetWriterStatus.failed
與AssetWriter.Error
顯示
Error Domain=AVFoundationErrorDomain Code=-11823 "Cannot Save" UserInfo={NSLocalizedRecoverySuggestion=Try saving again., NSLocalizedDescription=Cannot Save, NSUnderlyingError=0x1c044c360 {Error Domain=NSOSStatusErrorDomain Code=-12412 "(null)"}}
枝節問題:我玩重複的聲音時,應用程序是記錄嘗試驗證錄製的音頻,但是當我開始錄製時,即使在視頻和外部音頻麥克風正在工作的位置,聲音也會停止。
如果您需要更多信息,我可以將其他代碼上傳到GitHub。
理念
因爲有時記錄保存(我可以導出到照片應用程序和回放視頻),我認爲它必須是異步的問題在那裏我裝出來的東西秩序。請讓我知道,如果你看到任何!
我想要的一個想法是將文件保存到/ Documents中的自己的文件夾,而不是直接發送給/ Documents,以防出現奇怪的權限錯誤。雖然我相信這會造成一致的錯誤,而不是僅僅有時會破裂。
我的代碼
func startRecording() {
guard let firstDocumentDirectoryPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first else { return }
let directoryContents = try! FileManager.default.contentsOfDirectory(at: URL(fileURLWithPath: firstDocumentDirectoryPath), includingPropertiesForKeys: nil, options: [])
print(directoryContents)
videoURL = URL(fileURLWithPath: firstDocumentDirectoryPath.appending("/\(arc4random()).mp4"))
print(videoURL.absoluteString)
assetWriter = try! AVAssetWriter(url: videoURL, fileType: AVFileType.mp4)
let compressionProperties:[String:Any] = [...]
let videoSettings:[String:Any] = [...]
let audioSettings:[String:Any] = [...]
videoInput = AVAssetWriterInput(mediaType: .video, outputSettings: videoSettings)
audioMicInput = AVAssetWriterInput(mediaType: .audio, outputSettings: audioSettings)
audioAppInput = AVAssetWriterInput(mediaType: .audio, outputSettings: audioSettings)
guard let assetWriter = assetWriter else { return }
guard let videoInput = videoInput else { return }
guard let audioAppInput = audioAppInput else { return }
guard let audioMicInput = audioMicInput else { return }
videoInput.mediaTimeScale = 60
videoInput.expectsMediaDataInRealTime = true
audioMicInput.expectsMediaDataInRealTime = true
audioAppInput.expectsMediaDataInRealTime = true
if assetWriter.canAdd(videoInput) {
assetWriter.add(videoInput)
}
if assetWriter.canAdd(audioAppInput) {
assetWriter.add(audioAppInput)
}
if assetWriter.canAdd(audioMicInput) {
assetWriter.add(audioMicInput)
}
assetWriter.movieTimeScale = 60
RPScreenRecorder.shared().startCapture(handler: recordingHandler(sampleBuffer:sampleBufferType:error:)) { (error:Error?) in
if error != nil {
print("RPScreenRecorder.shared().startCapture: \(error.debugDescription)")
} else {
print("start capture complete")
}
}
}
func recordingHandler (sampleBuffer:CMSampleBuffer, sampleBufferType:RPSampleBufferType, error:Error?){
if error != nil {
print("recordingHandler: \(error.debugDescription)")
}
if CMSampleBufferDataIsReady(sampleBuffer) {
guard let assetWriter = assetWriter else { return }
guard let videoInput = videoInput else { return }
guard let audioAppInput = audioAppInput else { return }
guard let audioMicInput = audioMicInput else { return }
if assetWriter.status == AVAssetWriterStatus.unknown {
print("AVAssetWriterStatus.unknown")
if !assetWriter.startWriting() {
return
}
assetWriter.startSession(atSourceTime: CMSampleBufferGetPresentationTimeStamp(sampleBuffer))
}
if assetWriter.status == AVAssetWriterStatus.failed {
print("AVAssetWriterStatus.failed")
print("assetWriter.error: \(assetWriter.error.debugDescription)")
return
}
if sampleBufferType == RPSampleBufferType.video {
if videoInput.isReadyForMoreMediaData {
print("=appending video data")
videoInput.append(sampleBuffer)
}
}
if sampleBufferType == RPSampleBufferType.audioApp {
if audioAppInput.isReadyForMoreMediaData {
print("==appending app audio data")
audioAppInput.append(sampleBuffer)
}
}
if sampleBufferType == RPSampleBufferType.audioMic {
if audioMicInput.isReadyForMoreMediaData {
print("===appending mic audio data")
audioMicInput.append(sampleBuffer)
}
}
}
}
func stopRecording() {
RPScreenRecorder.shared().stopCapture { (error) in
guard let assetWriter = self.assetWriter else { return }
guard let videoInput = self.videoInput else { return }
guard let audioAppInput = self.audioAppInput else { return }
guard let audioMicInput = self.audioMicInput else { return }
if error != nil {
print("recordingHandler: \(error.debugDescription)")
} else {
videoInput.markAsFinished()
audioMicInput.markAsFinished()
audioAppInput.markAsFinished()
assetWriter.finishWriting(completionHandler: {
print(self.videoURL)
self.saveToCameraRoll(URL: self.videoURL)
})
}
}
}
你能分享你的代碼嗎? – Ros