Swift IOS使用AVFoundation录制视频和音频 [英] Swift IOS Record Video and Audio with AVFoundation

问题描述

通过遵循此问题，我能够成功获取录制的视频 此处

I was able to successfully grab the recorded video by following this question here

基本上

1. 继承自AVCaptureFileOutputRecordingDelegate原型
2. 遍历可用设备
3. 使用相机创建会话
4. 开始录制
5. 停止记录
6. 通过实现上述原型方法获取录制视频

1. Inherit from AVCaptureFileOutputRecordingDelegate prototype
2. Loop through available devices
3. Creating a session with the camera
4. Start Recording
5. Stop Recording
6. Get the Record video by implementing above prototype's method

但是文件不随音频一起提供.

But the file doesn't comes with the audio.

根据这个问题，我有分别录制音频并使用提到的类合并视频和音频

According to this question, i have to record audio separately and merge the video and audio using mentioned classes

但是我不知道如何同时实现视频和音频录制.

But i have no idea how to implement video and audio recording at the same time.

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()
                    }
                }
            }
        }

在此循环中，仅可用的设备类型为.Front和.Back

in this loop only available device types are .Front and .Back

推荐答案

找到了答案，该答案与

Found the answer, This answer goes with this code

可以简单地通过

1. 声明另一个捕获设备变量
2. 循环浏览设备并初始化摄像头和音频捕获设备变量
3. 将音频输入添加到会话中

代码

var captureDevice : AVCaptureDevice?
var captureAudio :AVCaptureDevice?

浏览设备并初始化捕获设备

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() 
}

内部会话

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.无需合并音频或执行任何操作.

This will output the video file with audio. no need to merge audio or do anything.

此苹果文档帮助

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