ios - ReplayKit 保存视频失败首先尝试使用麦克风
<p><p>场景 1:</p>
<ol>
<li>使用音频/视频写入器输入启动 AVAssetWriter。</li>
<li>使用 RPScreenRecorder 在没有麦克风的情况下开始录制并处理样本缓冲区。</li>
<li>文件在第一次尝试时可以很好地写入照片。</li>
</ol>
<p>场景 2:</p>
<ol>
<li>使用音频/视频写入器输入启动 AVAssetWriter。</li>
<li>使用 RPScreenRecorder 在启用<strong>麦克风</strong>的情况下开始录制并处理样本缓冲区。</li>
<li><p>第一次尝试写入文件失败。</p>
<p>UserInfo={NSLocalizedRecoverySuggestion=重试保存。, NSLocalizedDescription=无法保存, NSUnderlyingError=0x1c464f3c0 {Error Domain=NSOSStatusErrorDomain Code=-12412 "(null)"}}
2017-10-26 23:25:16.896673-0400 状态失败!:3 错误域=AVFoundationErrorDomain 代码=-11823“无法保存”</p></li>
</ol>
<p>第二次尝试效果很好。</p>
<p>我做错了什么？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><pre><code>import Foundation
import ReplayKit
import AVKit
import Photos
class ScreenRecorder
{
var assetWriter:AVAssetWriter!
var videoInput:AVAssetWriterInput!
var audioInput:AVAssetWriterInput!
var startSesstion = false
//let viewOverlay = WindowUtil()
//MARK: Screen Recording
func startRecording(withFileName fileName: String, recordingHandler:@escaping (Error?)-> Void)
{
if #available(iOS 11.0, *)
{
let fileURL = URL(fileURLWithPath: ReplayFileUtil.filePath(fileName))
assetWriter = try! AVAssetWriter(outputURL: fileURL, fileType:
AVFileType.mp4)
let videoOutputSettings: Dictionary<String, Any> = [
AVVideoCodecKey : AVVideoCodecType.h264,
AVVideoWidthKey : UIScreen.main.bounds.size.width,
AVVideoHeightKey : UIScreen.main.bounds.size.height,
// AVVideoCompressionPropertiesKey : [
// AVVideoAverageBitRateKey :425000, //96000
// AVVideoMaxKeyFrameIntervalKey : 1
// ]
];
var channelLayout = AudioChannelLayout.init()
channelLayout.mChannelLayoutTag = kAudioChannelLayoutTag_MPEG_5_1_D
let audioOutputSettings: = [
AVNumberOfChannelsKey: 6,
AVFormatIDKey: kAudioFormatMPEG4AAC_HE,
AVSampleRateKey: 44100,
AVChannelLayoutKey: NSData(bytes: &channelLayout, length: MemoryLayout.size(ofValue: channelLayout)),
]
videoInput= AVAssetWriterInput(mediaType: AVMediaType.video,outputSettings: videoOutputSettings)
audioInput= AVAssetWriterInput(mediaType: AVMediaType.audio,outputSettings: audioOutputSettings)
videoInput.expectsMediaDataInRealTime = true
audioInput.expectsMediaDataInRealTime = true
assetWriter.add(videoInput)
assetWriter.add(audioInput)
RPScreenRecorder.shared().startCapture(handler: { (sample, bufferType, error) in
recordingHandler(error)
if CMSampleBufferDataIsReady(sample)
{
DispatchQueue.main.async { in
if self?.assetWriter.status == AVAssetWriterStatus.unknown {
print("AVAssetWriterStatus.unknown")
if !(self?.assetWriter.startWriting())! {
return
}
self?.assetWriter.startSession(atSourceTime: CMSampleBufferGetPresentationTimeStamp(sample))
self?.startSesstion = true
}
// if self.assetWriter.status == AVAssetWriterStatus.unknown
// {
// self.assetWriter.startWriting()
// self.assetWriter.startSession(atSourceTime: CMSampleBufferGetPresentationTimeStamp(sample))
// self?.startSesstion = true
}
if self.assetWriter.status == AVAssetWriterStatus.failed {
print("Error occured, status = \(String(describing: self.assetWriter.status.rawValue)), \(String(describing: self.assetWriter.error!.localizedDescription)) \(String(describing: self.assetWriter.error))")
recordingHandler(self.assetWriter.error)
return
}
if (bufferType == .video)
{
if(self.videoInput.isReadyForMoreMediaData) && self.startSesstion {
self.videoInput.append(sample)
}
}
if (bufferType == .audioApp)
{
if self.audioInput.isReadyForMoreMediaData
{
//print("Audio Buffer Came")
self.audioInput.append(sample)
}
}
}
}) { (error) in
recordingHandler(error)
// debugPrint(error)
}
} else
{
// Fallback on earlier versions
}
}
func stopRecording(isBack: Bool, aPathName: String ,handler: @escaping (Error?) -> Void)
{
//var isSucessFullsave = false
if #available(iOS 11.0, *)
{
self.startSesstion = false
RPScreenRecorder.shared().stopCapture{ (error) in
self.videoInput.markAsFinished()
self.audioInput.markAsFinished()
handler(error)
if error == nil{
self.assetWriter.finishWriting{
self.startSesstion = false
print(ReplayFileUtil.fetchAllReplays())
if !isBack{
self.PhotosSaveWithAurtorise(aPathName: aPathName)
}else{
self.deleteDirectory()
}
}
}else{
self.deleteDirectory()
}
}
}else {
// print("Fallback on earlier versions")
}
}
func PhotosSaveWithAurtorise(aPathName: String){
if PHPhotoLibrary.authorizationStatus() == .authorized {
self.SaveToCamera(aPathName: aPathName)
} else {
PHPhotoLibrary.requestAuthorization({ (status) in
if status == .authorized {
self.SaveToCamera(aPathName: aPathName)
}
})
}
}
func SaveToCamera(aPathName: String){
PHPhotoLibrary.shared().performChanges({
PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: (ReplayFileUtil.fetchAllReplays().last)!)
}) { saved, error in
if saved {
addScreenCaptureVideo(aPath: aPathName)
print("Save")
}else{
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "isScreenRecordFaildToSave"), object: nil)
print("error to save - \(error)")
}
}
}
func deleteDirectory(){
ReplayFileUtil.delete()
}
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - ReplayKit 保存视频失败首先尝试使用麦克风，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/47063926/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/47063926/
</a>
</p>
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