最近在处理项目时，我需要使用App音频和麦克风音频记录系统屏幕。
我尝试了以下解决方案。
调用函数之前
recorder.isMicrophoneEnabled = true startRecording(r: recorder)
func startRecording(_ r: RPScreenRecorder) {
r.startRecording(handler: { (error: Error?) -> Void in
if error == nil { // Recording has started
// sender.title = "Stop"
self.recorder.isMicrophoneEnabled = true
} else {
// Handle error
print(error?.localizedDescription ?? "Unknown error")
}
})
}
问题在于视频记录并保存到相机胶卷中，但是在保存的视频中既没有App Audio也没有Mic Audio Records
然后，我尝试使用Replay Kit的screenCapture功能。代码在下面给出
//MARK: Screen Recording
func startRecording(withFileName fileName: String, recordingHandler:@escaping (Error?)-> Void)
{
if #available(iOS 11.0, *)
{
let fileURL = URL(fileURLWithPath: ReplayFileUtil.filePath(fileName))
// let updatedFileUrl = fileURL.appendingPathExtension(".mp4")
// removeFile(fileURL)
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
let documentsDirectory = paths[0] as String
let filePath : String = "\(documentsDirectory)/Replays/\(fileName)"
if FileManager.default.fileExists(atPath: filePath) {
print("sucess")
}
do {
assetWriter = try? AVAssetWriter.init(url: fileURL, fileType: .mp4)
} catch let error {
print(error.localizedDescription)
}
var videoCleanApertureSettings = [
AVVideoCleanApertureWidthKey : 320,
AVVideoCleanApertureHeightKey : 480,
AVVideoCleanApertureHorizontalOffsetKey : 10,
AVVideoCleanApertureVerticalOffsetKey : 10
]
var codecSettings = [
AVVideoAverageBitRateKey : 960000,
AVVideoMaxKeyFrameIntervalKey : 1,
AVVideoCleanApertureKey : videoCleanApertureSettings
] as [String:Any]
var videoOutputSettings = [
AVVideoCodecKey : AVVideoCodecType.jpeg,
AVVideoCompressionPropertiesKey : codecSettings,
AVVideoWidthKey : 300,
AVVideoHeightKey : 540
] as [String:Any]
var channelLayout = AudioChannelLayout.init()
channelLayout.mChannelLayoutTag = kAudioChannelLayoutTag_MPEG_5_1_D
let audioOutputSettings: [String : Any] = [
AVNumberOfChannelsKey: 6,
AVFormatIDKey: kAudioFormatMPEG4AAC_HE,
AVSampleRateKey: 44100,
AVChannelLayoutKey: NSData(bytes: &channelLayout, length: MemoryLayout.size(ofValue: channelLayout)),
]
audioInput = AVAssetWriterInput(mediaType: .audio, outputSettings: audioOutputSettings)
videoInput = AVAssetWriterInput (mediaType: AVMediaType.video, outputSettings: videoOutputSettings)
videoInput.expectsMediaDataInRealTime = true
audioInput.expectsMediaDataInRealTime = true
if assetWriter.canAdd(videoInput) {
print("Added video Input")
assetWriter.add(videoInput)
}
assetWriter.add(audioInput)
self.assetWriter.startWriting()
RPScreenRecorder.shared().isMicrophoneEnabled = true
let time = CMTime.init(value: 10, timescale: 1)
self.assetWriter.startSession(atSourceTime: time)
RPScreenRecorder.shared().startCapture(handler: { (sample, bufferType, error) in
recordingHandler(error)
if CMSampleBufferDataIsReady(sample)
{
if self.assetWriter.status == AVAssetWriterStatus.unknown
{
// self.assetWriter.startWriting()
print(self.assetWriter.status)
}
print(self.assetWriter.status)
if self.assetWriter.status == AVAssetWriterStatus.failed {
print("Asset Writer failed")
print("Error occured, status = \(self.assetWriter.status.rawValue), \(self.assetWriter.error!.localizedDescription) \(String(describing: self.assetWriter.error))")
return
}
if (bufferType == .video)
{
if self.videoInput.isReadyForMoreMediaData
{
print("Buffer Video Print")
self.videoInput.append(sample)
}
}
if (bufferType == .audioApp || bufferType == .audioMic)
{
if self.audioInput.isReadyForMoreMediaData
{
print("Audio Buffer Came")
self.audioInput.append(sample)
}
}
}
}) { (error) in
recordingHandler(error)
print(error?.localizedDescription)
}
} else
{
// Fallback on earlier versions
}
}
请告诉我我做错了什么。
答案 0 :(得分：1)
//
// ScreenRecorder.swift
// BugReporterTest
//
// Created by Giridhar on 09/06/17.
// Copyright © 2017 Giridhar. All rights reserved.
//
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: [String : Any] = [
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 { [weak self] 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()
}
}