斯威夫特IOS录制视频和音频AVFoundation

我能够通过以下这个问题 here 斯威夫特IOS录制视频和音频AVFoundation

基本上

从AVCaptureFileOutputRecordingDelegate原型
循环继承可用的设备
用相机创建会话
开始记录
停止录制
通过实施上述原型的方法

获取录制视频，但该文件不自带的音频。

据this问题，我不得不单独录制音频和使用提到的类

合并的视频和音频，但我不知道如何同时实现视频和音频录制。

for device in devices { 
      // Make sure this particular device supports video 
      if (device.hasMediaType(AVMediaTypeVideo)) { 
       // Finally check the position and confirm we've got the back camera 
       if(device.position == AVCaptureDevicePosition.Back) { 
        captureDevice = device as? AVCaptureDevice 
        if captureDevice != nil { 
         print("Capture device found") 

         beginSession() 
        } 
       } 
      } 
     }

在这个循环

唯一可用的设备类型是.Front和.Back

来源

2016-03-05 PJ3

找到了答案，这个答案去与this代码

它可以简单地通过

宣告完成另一个捕获设备变量
通过设备循环并初始化摄像头和音频捕获设备可变
添加音频输入会话

代码

var captureDevice : AVCaptureDevice? 
var captureAudio :AVCaptureDevice?

遍历设备和初始化捕获设备

var captureDeviceVideoFound: Bool = false 
var captureDeviceAudioFound:Bool = false 

// Loop through all the capture devices on this phone 
for device in devices { 
// Make sure this particular device supports video 
    if (device.hasMediaType(AVMediaTypeVideo)) { 
// Finally check the position and confirm we've got the front camera 
     if(device.position == AVCaptureDevicePosition.Front) { 

      captureDevice = device as? AVCaptureDevice //initialize video 
      if captureDevice != nil { 
       print("Capture device found") 
       captureDeviceVideoFound = true; 
      } 
     } 
    } 
    if(device.hasMediaType(AVMediaTypeAudio)){ 
     print("Capture device audio init") 
     captureAudio = device as? AVCaptureDevice //initialize audio 
     captureDeviceAudioFound = true 
    } 
} 
if(captureDeviceAudioFound && captureDeviceVideoFound){ 
    beginSession() 
}

session里面

try captureSession.addInput(AVCaptureDeviceInput(device: captureDevice)) 
try captureSession.addInput(AVCaptureDeviceInput(device: captureAudio))

这将输出带有音频的视频文件。无需合并音频或做任何事情。

这苹果文档helps

来源

2016-03-05 05:49:36 PJ3

-1

录制有声短片

//Get Video Device 

if let devices = AVCaptureDevice.devices(withMediaType: AVMediaTypeVideo) as? [AVCaptureDevice] { 
    for device in devices { 
     if device.hasMediaType(AVMediaTypeVideo) { 
      if device .position == AVCaptureDevicePosition.back{ 
       videoCaptureDevice = device 
      } 
     } 
    } 
    if videoCaptureDevice != nil { 
     do { 
      // Add Video Input 
      try self.captureSession.addInput(AVCaptureDeviceInput(device: videoCaptureDevice)) 
      // Get Audio Device 
      let audioInput = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeAudio) 
      //Add Audio Input 
      try self.captureSession.addInput(AVCaptureDeviceInput(device: audioInput)) 
      self.previewLayer = AVCaptureVideoPreviewLayer(session: self.captureSession) 
      previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill 
      previewLayer.connection.videoOrientation = AVCaptureVideoOrientation.portrait 
      self.videoView.layer.addSublayer(self.previewLayer) 
      //Add File Output 
      self.captureSession.addOutput(self.movieOutput) 
      captureSession.startRunning() 
     }catch { 
      print(error) 
     }

来源

2018-01-10 13:14:08 Santhoshkumar

我也有这个问题，但是当我分组后添加视频输入和声音输入后，音频工作。这是我添加输入的代码。

if (cameraSession.canAddInput(deviceInput) == true && cameraSession.canAddInput(audioDeviceInput) == true) {//detects if devices can be added 
      cameraSession.addInput(deviceInput)//adds video 
      cameraSession.addInput(audioDeviceInput)//adds audio 
     }

此外，我发现你必须先有视频输入，否则将不会有音频。我原本有两个if语句，但我发现把它们放在一起可以让视频和音频一起录制。希望这可以帮助。

来源

2018-01-21 21:12:48 Esslushy

斯威夫特IOS录制视频和音频AVFoundation

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