标签：直播 - 飞羽的博客

直播系列四、报错Bug修复记录

飞羽

iOS

发布于：2019年11月8日

./build-ffmpeg.sh

xcrun -sdk iphoneos clang is unable to create an executable file.
C compiler test failed.

If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.

解决方法：

1	sudo xcode-select --switch /Applications/Xcode.app

armv7

https://www.jianshu.com/p/2669370bee23

1
2
3

./libavutil/arm/asm.S:50:9: error: unknown directive
       .arch armv7-a
       ^

删除armv7compile-ffmpeg.sh文件中

1
2
3

FF_ALL_ARCHS_IOS8_SDK="armv7 arm64 i386 x86_64"

改为 FF_ALL_ARCHS_IOS8_SDK="arm64 i386 x86_64"

直播系列三、IJKPlayer拉流

飞羽

iOS

发布于：2019年11月8日

https://www.jianshu.com/p/65fb80dff4d6

合并真机和模拟器的framework

1	lipo -create 真机framework路径模拟器framework路径 -output 合并的文件路径

import UIKit

class playerViewController: UIViewController {

    var iPlayer:IJKFFMoviePlayerController? 
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let options:IJKFFOptions = IJKFFOptions.byDefault()
        let url:URL = URL.init(string: "rtmp://live.hkstv.hk.lxdns.com/live/hks")!
 
        
        self.iPlayer = IJKFFMoviePlayerController.init(contentURL: url, with: options)
        var arm1 = UIViewAutoresizing.init(rawValue: 0)
        arm1.insert(UIViewAutoresizing.flexibleWidth)
        arm1.insert(UIViewAutoresizing.flexibleHeight) 
        self.iPlayer?.view.autoresizingMask = arm1
        self.iPlayer?.view.backgroundColor = UIColor.white
        self.iPlayer?.view.frame = CGRect.init(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: 300)
        self.iPlayer?.scalingMode = .aspectFit
        self.iPlayer?.shouldAutoplay = true
        self.view.autoresizesSubviews = true
        self.view.addSubview((self.iPlayer?.view)!)
        
        // Do any additional setup after loading the view, typically from a nib.
    }
    
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.iPlayer?.prepareToPlay() //准备
        self.iPlayer?.play() //播放
    }
    
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        self.iPlayer?.pause()//暂停
//        self.iPlayer?.shutdown() //销毁
    }

}

直播系列二、LFLiveKit推流

飞羽

iOS

发布于：2019年11月8日

LFLiveKit：框架支持RTMP，由Adobe公司开发。github地址https://github.com/LaiFengiOS/LFLiveKit

LFLiveKit库里已经集成GPUImage框架用于美颜功能，GPUImage基于OpenGl开发，纯OC语言框架，封装好了各种滤镜同时也可以编写自定义的滤镜，其本身内置了多达125种常见的滤镜效果。

LFLiveKit库通过pod导入项目

1	pod 'LFLiveKit'

配置上传地址

1
2
3

let stream = LFLiveStreamInfo()
stream.url = "rtmp://192.168.***.***:1935/rtmplive/room"
session.startLive(stream)

demo

//
//  ViewController.swift
//  IfeiyvLiveVideo
//
//  Created by l on 2019/7/1.
//  Copyright © 2019 ifeiyv. All rights reserved.
//

import UIKit

class ViewController: UIViewController, LFLiveSessionDelegate {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        session.delegate = self
        session.preView = self.view
        
        self.requestAccessForVideo()
        self.requestAccessForAudio()
        self.view.backgroundColor = UIColor.clear
        self.view.addSubview(containerView)
        containerView.addSubview(stateLabel)
        containerView.addSubview(closeButton)
        containerView.addSubview(beautyButton)
        containerView.addSubview(cameraButton)
        containerView.addSubview(startLiveButton)
        
        cameraButton.addTarget(self, action: #selector(didTappedCameraButton(_:)), for:.touchUpInside)
        beautyButton.addTarget(self, action: #selector(didTappedBeautyButton(_:)), for: .touchUpInside)
        startLiveButton.addTarget(self, action: #selector(didTappedStartLiveButton(_:)), for: .touchUpInside)
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    //MARK: AccessAuth
    
    func requestAccessForVideo() -> Void {
        let status = AVCaptureDevice.authorizationStatus(for: AVMediaType.video);
        switch status  {
        // 许可对话没有出现，发起授权许可
        case AVAuthorizationStatus.notDetermined:
            AVCaptureDevice.requestAccess(for: AVMediaType.video, completionHandler: { (granted) in
                if(granted){
                    DispatchQueue.main.async {
                        self.session.running = true
                    }
                }
            })
            break;
        // 已经开启授权，可继续
        case AVAuthorizationStatus.authorized:
            session.running = true;
            break;
        // 用户明确地拒绝授权，或者相机设备无法访问
        case AVAuthorizationStatus.denied: break
        case AVAuthorizationStatus.restricted:break;
        default:
            break;
        }
    }
    
    func requestAccessForAudio() -> Void {
        let status = AVCaptureDevice.authorizationStatus(for:AVMediaType.audio)
        switch status  {
        // 许可对话没有出现，发起授权许可
        case AVAuthorizationStatus.notDetermined:
            AVCaptureDevice.requestAccess(for: AVMediaType.audio, completionHandler: { (granted) in
                
            })
            break;
        // 已经开启授权，可继续
        case AVAuthorizationStatus.authorized:
            break;
        // 用户明确地拒绝授权，或者相机设备无法访问
        case AVAuthorizationStatus.denied: break
        case AVAuthorizationStatus.restricted:break;
        default:
            break;
        }
    }
    
    //MARK: - Callbacks
    
    // 回调
    func liveSession(_ session: LFLiveSession?, debugInfo: LFLiveDebug?) {
        print("debugInfo: \(debugInfo?.currentBandwidth)")
    }
    
    func liveSession(_ session: LFLiveSession?, errorCode: LFLiveSocketErrorCode) {
        print("errorCode: \(errorCode.rawValue)")
    }
    
    func liveSession(_ session: LFLiveSession?, liveStateDidChange state: LFLiveState) {
        print("liveStateDidChange: \(state.rawValue)")
        switch state {
        case LFLiveState.ready:
            stateLabel.text = "未连接"
            break;
        case LFLiveState.pending:
            stateLabel.text = "连接中"
            break;
        case LFLiveState.start:
            stateLabel.text = "已连接"
            break;
        case LFLiveState.error:
            stateLabel.text = "连接错误"
            break;
        case LFLiveState.stop:
            stateLabel.text = "未连接"
            break;
        default:
            break;
        }
    }
    
    //MARK: - Events
    
    // 开始直播
    @objc func didTappedStartLiveButton(_ button: UIButton) -> Void {
        startLiveButton.isSelected = !startLiveButton.isSelected;
        if (startLiveButton.isSelected) {
            startLiveButton.setTitle("结束直播", for: UIControl.State())
            let stream = LFLiveStreamInfo()
            stream.url = "rtmp://192.168.1.148:1935/rtmplive/room"
            session.startLive(stream)
        } else {
            startLiveButton.setTitle("开始直播", for: UIControl.State())
            session.stopLive()
        }
    }
    
    // 美颜
    @objc func didTappedBeautyButton(_ button: UIButton) -> Void {
        session.beautyFace = !session.beautyFace;
        beautyButton.isSelected = !session.beautyFace
    }
    
    // 摄像头
    @objc func didTappedCameraButton(_ button: UIButton) -> Void {
        let devicePositon = session.captureDevicePosition;
        session.captureDevicePosition = (devicePositon == AVCaptureDevice.Position.back) ? AVCaptureDevice.Position.front : AVCaptureDevice.Position.back;
    }
    
    // 关闭
    func didTappedCloseButton(_ button: UIButton) -> Void  {
        
    }
    
    //MARK: - Getters and Setters
    
    //  默认分辨率368 ＊ 640  音频：44.1 iphone6以上48  双声道  方向竖屏
    var session: LFLiveSession = {
        let audioConfiguration = LFLiveAudioConfiguration.defaultConfiguration(for: LFLiveAudioQuality.high)
        let videoConfiguration = LFLiveVideoConfiguration.defaultConfiguration(for: LFLiveVideoQuality.low3)
        let session = LFLiveSession(audioConfiguration: audioConfiguration, videoConfiguration: videoConfiguration)
        return session!
    }()
    
    // 视图
    var containerView: UIView = {
        let containerView = UIView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height))
        containerView.backgroundColor = UIColor.clear
        containerView.autoresizingMask = [UIView.AutoresizingMask.flexibleHeight, UIView.AutoresizingMask.flexibleHeight]
        return containerView
    }()
    
    // 状态Label
    var stateLabel: UILabel = {
        let stateLabel = UILabel(frame: CGRect(x: 20, y: 20, width: 80, height: 40))
        stateLabel.text = "未连接"
        stateLabel.textColor = UIColor.white
        stateLabel.font = UIFont.systemFont(ofSize: 14)
        return stateLabel
    }()
    
    // 关闭按钮
    var closeButton: UIButton = {
        let closeButton = UIButton(frame: CGRect(x: UIScreen.main.bounds.width - 10 - 44, y: 20, width: 44, height: 44))
        closeButton.setImage(UIImage(named: "close_preview"), for: UIControl.State())
        return closeButton
    }()
    
    // 摄像头
    var cameraButton: UIButton = {
        let cameraButton = UIButton(frame: CGRect(x: UIScreen.main.bounds.width - 54 * 2, y: 20, width: 44, height: 44))
        cameraButton.setImage(UIImage(named: "camra_preview"), for: UIControl.State())
        return cameraButton
    }()
    
    // 摄像头
    var beautyButton: UIButton = {
        let beautyButton = UIButton(frame: CGRect(x: UIScreen.main.bounds.width - 54 * 3, y: 20, width: 44, height: 44))
        beautyButton.setImage(UIImage(named: "camra_beauty"), for: UIControl.State.selected)
        beautyButton.setImage(UIImage(named: "camra_beauty_close"), for: UIControl.State())
        return beautyButton
    }()
    
    // 开始直播按钮
    var startLiveButton: UIButton = {
        let startLiveButton = UIButton(frame: CGRect(x: 30, y: UIScreen.main.bounds.height - 50, width: UIScreen.main.bounds.width - 10 - 44, height: 44))
        startLiveButton.layer.cornerRadius = 22
        startLiveButton.setTitleColor(UIColor.black, for:UIControl.State())
        startLiveButton.setTitle("开始直播", for: UIControl.State())
        startLiveButton.titleLabel!.font = UIFont.systemFont(ofSize: 14)
        startLiveButton.backgroundColor = UIColor(red: 50/255.0, green: 32/255.0, blue: 245/255.0, alpha: 1)//colorLiteralRed: 50, green: 32, blue: 245, alpha: 1
        return startLiveButton
    }()
}
//
//  ViewController.swift
//  IfeiyvLiveVideo
//
//  Created by l on 2019/7/1.
//  Copyright © 2019 ifeiyv. All rights reserved.
//

import UIKit

class ViewController: UIViewController, LFLiveSessionDelegate {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        session.delegate = self
        session.preView = self.view
        
        self.requestAccessForVideo()
        self.requestAccessForAudio()
        self.view.backgroundColor = UIColor.clear
        self.view.addSubview(containerView)
        containerView.addSubview(stateLabel)
        containerView.addSubview(closeButton)
        containerView.addSubview(beautyButton)
        containerView.addSubview(cameraButton)
        containerView.addSubview(startLiveButton)
        
        cameraButton.addTarget(self, action: #selector(didTappedCameraButton(_:)), for:.touchUpInside)
        beautyButton.addTarget(self, action: #selector(didTappedBeautyButton(_:)), for: .touchUpInside)
        startLiveButton.addTarget(self, action: #selector(didTappedStartLiveButton(_:)), for: .touchUpInside)
    }
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    //MARK: AccessAuth
    
    func requestAccessForVideo() -> Void {
        let status = AVCaptureDevice.authorizationStatus(for: AVMediaType.video);
        switch status  {
        // 许可对话没有出现，发起授权许可
        case AVAuthorizationStatus.notDetermined:
            AVCaptureDevice.requestAccess(for: AVMediaType.video, completionHandler: { (granted) in
                if(granted){
                    DispatchQueue.main.async {
                        self.session.running = true
                    }
                }
            })
            break;
        // 已经开启授权，可继续
        case AVAuthorizationStatus.authorized:
            session.running = true;
            break;
        // 用户明确地拒绝授权，或者相机设备无法访问
        case AVAuthorizationStatus.denied: break
        case AVAuthorizationStatus.restricted:break;
        default:
            break;
        }
    }
    
    func requestAccessForAudio() -> Void {
        let status = AVCaptureDevice.authorizationStatus(for:AVMediaType.audio)
        switch status  {
        // 许可对话没有出现，发起授权许可
        case AVAuthorizationStatus.notDetermined:
            AVCaptureDevice.requestAccess(for: AVMediaType.audio, completionHandler: { (granted) in
                
            })
            break;
        // 已经开启授权，可继续
        case AVAuthorizationStatus.authorized:
            break;
        // 用户明确地拒绝授权，或者相机设备无法访问
        case AVAuthorizationStatus.denied: break
        case AVAuthorizationStatus.restricted:break;
        default:
            break;
        }
    }
    
    //MARK: - Callbacks
    
    // 回调
    func liveSession(_ session: LFLiveSession?, debugInfo: LFLiveDebug?) {
        print("debugInfo: \(debugInfo?.currentBandwidth)")
    }
    
    func liveSession(_ session: LFLiveSession?, errorCode: LFLiveSocketErrorCode) {
        print("errorCode: \(errorCode.rawValue)")
    }
    
    func liveSession(_ session: LFLiveSession?, liveStateDidChange state: LFLiveState) {
        print("liveStateDidChange: \(state.rawValue)")
        switch state {
        case LFLiveState.ready:
            stateLabel.text = "未连接"
            break;
        case LFLiveState.pending:
            stateLabel.text = "连接中"
            break;
        case LFLiveState.start:
            stateLabel.text = "已连接"
            break;
        case LFLiveState.error:
            stateLabel.text = "连接错误"
            break;
        case LFLiveState.stop:
            stateLabel.text = "未连接"
            break;
        default:
            break;
        }
    }
    
    //MARK: - Events
    
    // 开始直播
    @objc func didTappedStartLiveButton(_ button: UIButton) -> Void {
        startLiveButton.isSelected = !startLiveButton.isSelected;
        if (startLiveButton.isSelected) {
            startLiveButton.setTitle("结束直播", for: UIControl.State())
            let stream = LFLiveStreamInfo()
            stream.url = "rtmp://192.168.1.148:1935/rtmplive/room"
            session.startLive(stream)
        } else {
            startLiveButton.setTitle("开始直播", for: UIControl.State())
            session.stopLive()
        }
    }
    
    // 美颜
    @objc func didTappedBeautyButton(_ button: UIButton) -> Void {
        session.beautyFace = !session.beautyFace;
        beautyButton.isSelected = !session.beautyFace
    }
    
    // 摄像头
    @objc func didTappedCameraButton(_ button: UIButton) -> Void {
        let devicePositon = session.captureDevicePosition;
        session.captureDevicePosition = (devicePositon == AVCaptureDevice.Position.back) ? AVCaptureDevice.Position.front : AVCaptureDevice.Position.back;
    }
    
    // 关闭
    func didTappedCloseButton(_ button: UIButton) -> Void  {
        
    }
    
    //MARK: - Getters and Setters
    
    //  默认分辨率368 ＊ 640  音频：44.1 iphone6以上48  双声道  方向竖屏
    var session: LFLiveSession = {
        let audioConfiguration = LFLiveAudioConfiguration.defaultConfiguration(for: LFLiveAudioQuality.high)
        let videoConfiguration = LFLiveVideoConfiguration.defaultConfiguration(for: LFLiveVideoQuality.low3)
        let session = LFLiveSession(audioConfiguration: audioConfiguration, videoConfiguration: videoConfiguration)
        return session!
    }()
    
    // 视图
    var containerView: UIView = {
        let containerView = UIView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height))
        containerView.backgroundColor = UIColor.clear
        containerView.autoresizingMask = [UIView.AutoresizingMask.flexibleHeight, UIView.AutoresizingMask.flexibleHeight]
        return containerView
    }()
    
    // 状态Label
    var stateLabel: UILabel = {
        let stateLabel = UILabel(frame: CGRect(x: 20, y: 20, width: 80, height: 40))
        stateLabel.text = "未连接"
        stateLabel.textColor = UIColor.white
        stateLabel.font = UIFont.systemFont(ofSize: 14)
        return stateLabel
    }()
    
    // 关闭按钮
    var closeButton: UIButton = {
        let closeButton = UIButton(frame: CGRect(x: UIScreen.main.bounds.width - 10 - 44, y: 20, width: 44, height: 44))
        closeButton.setImage(UIImage(named: "close_preview"), for: UIControl.State())
        return closeButton
    }()
    
    // 摄像头
    var cameraButton: UIButton = {
        let cameraButton = UIButton(frame: CGRect(x: UIScreen.main.bounds.width - 54 * 2, y: 20, width: 44, height: 44))
        cameraButton.setImage(UIImage(named: "camra_preview"), for: UIControl.State())
        return cameraButton
    }()
    
    // 摄像头
    var beautyButton: UIButton = {
        let beautyButton = UIButton(frame: CGRect(x: UIScreen.main.bounds.width - 54 * 3, y: 20, width: 44, height: 44))
        beautyButton.setImage(UIImage(named: "camra_beauty"), for: UIControl.State.selected)
        beautyButton.setImage(UIImage(named: "camra_beauty_close"), for: UIControl.State())
        return beautyButton
    }()
    
    // 开始直播按钮
    var startLiveButton: UIButton = {
        let startLiveButton = UIButton(frame: CGRect(x: 30, y: UIScreen.main.bounds.height - 50, width: UIScreen.main.bounds.width - 10 - 44, height: 44))
        startLiveButton.layer.cornerRadius = 22
        startLiveButton.setTitleColor(UIColor.black, for:UIControl.State())
        startLiveButton.setTitle("开始直播", for: UIControl.State())
        startLiveButton.titleLabel!.font = UIFont.systemFont(ofSize: 14)
        startLiveButton.backgroundColor = UIColor(red: 50/255.0, green: 32/255.0, blue: 245/255.0, alpha: 1)//colorLiteralRed: 50, green: 32, blue: 245, alpha: 1
        return startLiveButton
    }()
}

直播系列一、创建本地rtmp服务器

飞羽

iOS

发布于：2019年11月8日

在网上搜索参考了大量文章，解决了N多Bug,终于实现了直播功能

nginx是非常优秀的开源服务器，用它来做hls或者rtmp流媒体服务器是非常不错的选择

1、安装Homebrow

（1）执行克隆命令,github的项目(https://github.com/denji/homebrew-nginx)

1	brew tap denji/nginx

注意brew tap homebrew/nginx报下面的错误,homebrew/nginx已经弃用. 报错：Error: homebrew/nginx was deprecated. This tap is now empty as all its formulae were migrated.

（2）执行安装命令:

1	brew install nginx-full --with-rtmp-module

（3）至此nginx和rtmp模块就安装好了，下面开始来配置nginx的rtmp模块
接下来看一下nginx安装在什么地方:

1	brew info nginx-full

打印信息

The default port has been set in /usr/local/etc/nginx/nginx.conf to 8080 so that
nginx can run without sudo.

nginx will load all files in /usr/local/etc/nginx/servers/.

- Tips -
Run port 80:
 $ sudo chown root:wheel /usr/local/opt/nginx-full/bin/nginx
 $ sudo chmod u+s /usr/local/opt/nginx-full/bin/nginx
Reload config:
 $ nginx -s reload
Reopen Logfile:
 $ nginx -s reopen
Stop process:
 $ nginx -s stop
Waiting on exit process
 $ nginx -s quit

To have launchd start denji/nginx/nginx-full now and restart at login:
  brew services start denji/nginx/nginx-full
Or, if you don't want/need a background service you can just run:
  nginx

nginx安装所在位置:

1	/usr/local/opt/nginx-full/bin/nginx

nginx配置文件所在位置:

1	/usr/local/etc/nginx/nginx.conf

（4）启动nginx,执行命令:

1	sudo nginx

2、测试nginx：

1	在浏览器中打开如下地址：http://localhost:8080入过

如果出现Welcome to nginx!,说明安装成功.

如果终端上提示：

1	nginx: [emerg] bind() to 0.0.0.0:8080 failed (48: Address already in use)

则表示8080端口被占用了, 查看端口PID

1	lsof -i tcp:8080

kill掉占用8080端口的PID

1	kill 9603（这里替换成占用8080端口的PID）

3、重新加载nginx的配置文件

（1）修改nginx.conf这个配置文件，配置rtmp
复制nginx配置文件所在位置:

1	vi /usr/local/etc/nginx/nginx.conf

（2）执行上面命令会直接编辑,或者直接前往当前文件用记事本打开.
滚动到最后面(最后一个}后面即可，不能在{}里面)，添加一下代码，进行配置，最后记得保存。

rtmp {  
  server {  
      listen 1935;  
    #直播流配置  
      application rtmplive {  
          live on;  
          #为 rtmp 引擎设置最大连接数。默认为 off  
          max_connections 1024;  
       }  
      application hls{  
          live on;  
          hls on;  
          hls_path /usr/local/var/www/hls;  
          hls_fragment 1s;  
      }  
   }  
}

（3）编辑完成之后,执行一下重新加载配置文件命令:

1	sudo nginx -s reload

需要输入开机密码 sudo不加的话会报错： nginx: [alert] could not open error log file: open() "/usr/local/var/log/nginx/error.log" failed (13: Permission denied)该命令执行后会出来一个弹框询问是否允许 nginx 加入到网络中，选择允许即可。

（4）重启nginx：

1	sudo /usr/local/opt/nginx-full/bin/nginx -s reload

PS：如果你之前不是按照我上面的方法按照的 nginx，在执行 sudo nginx -s reload 时报了如下错，建议你卸载 nginx后按照我上面的步骤重新安装nginx。
nginx: [emerg] unknown directive “rtmp” in /usr/local/etc/nginx/nginx.conf:119

nginx常用方法:

出现权限不足的错误提示时，命令前加上 sudo

重新加载配置文件:  nginx -s reload
重新加载日志:     nginx -s reopen 
停止 nginx:      nginx -s stop  
有序退出 nginx:   nginx -s quit

4、安装ffmepg工具

1	brew install ffmpeg

5、本地推流

(1)、搭建本地视频直播，比如电脑上面有很多电影，我们可以通过推流的形式实现实时直播：

A：在电脑上播放推流内容
安装一个支持rtmp协议的视频播放器，Mac下可以用VLC
下载VLC

本地下载一个视频文件路径为 /Users/iOS002/Desktop/loginmovie.mp4

执行以下命令:

1	ffmpeg -re -i /Users/iOS002/Desktop/loginmovie.mp4 -vcodec libx264 -acodec aac -strict -2 -f flv rtmp://localhost:1935/rtmplive/room

用vlc 然后打开 VLC 中的 file – Open Network, 直接输入代码中的 url:

1	rtmp://localhost:1935/rtmplive/room

即可以通过VLC来播放终端中实时推过来的 RTMP流。

B：通过手机观看电脑的推流

通过集成 ijkplayer 把地址换成推流的地址即可观看

播放端用的针对RTMP优化过的ijkplayer，ijkplayer是基于FFmpeg的跨平台播放器，这个开源项目已经被多个 App 使用，其中映客、美拍和斗鱼使用了 ijkplayer。

(2)、桌面录制或者分享

1	ffmpeg -f avfoundation -i "1" -vcodec libx264 -preset ultrafast -acodec libfaac -f flv rtmp://localhost:1935/rtmplive/room

(3)、桌面+麦克风

1	ffmpeg -f avfoundation -i "1:0" -vcodec libx264 -preset ultrafast -acodec libmp3lame -ar 44100 -ac 1 -f flv rtmp://localhost:1935/rtmplive/room

(4)、桌面+麦克风，并且还要摄像头拍摄到自己

ffmpeg -f avfoundation -framerate 30 -i "1:0" \-f avfoundation -framerate 30 -video_size 640x480 -i "0" \-c:v libx264 -preset ultrafast \-filter_complex 'overlay=main_w-overlay_w-10:main_h-overlay_h-10' -acodec libmp3lame -ar 44100 -ac 1 -f flv rtmp://localhost:2016/rtmplive/room

6、手机推流

可以用 LFLiveKit 集成到工程进行推流，LFLiveKit已经帮我们实现了视频采集、后台录制、美颜功能、支持h264、AAC编码，动态改变速率，RTMP传输等，我们开发的时候就很简单了只需把localhost:8080换成自己电脑的ip地址即可:

1	rtmp://10.0.0.17:1935/rtmplive/room

注意通过网络查看电脑的局域网 IP替换掉 localhost 即可。

A：通过VLC观看手机的推流

打开手机直播后，然后在电脑上打开VLC（同上），就能实现手机推流，在电脑上拉流播放了！！(注：手机需要和电脑连接同一网络！)

B：通过手机观看手机的推流（这也就是市面上的那些直播App的最终实现形式了）

通过集成 ijkplayer 把地址换成推流的地址即可观看。

PS：一个很隐蔽的报错：

如果你发现你的推流地址和拉流地址在电脑上都是好好的，但是通过手机实现的时候就是报错，那么估计就是因为Mac防火墙的问题。

ERROR: PILI_RTMP_Connect0, failed to connect socket. 60 (Operation timed out)
ERROR: WriteN, PILI_RTMP send error 9, Bad file descriptor, (140 bytes)
ERROR: PILI_RTMP_Connect0, failed to connect socket. 60 (Operation timed out)
ERROR: WriteN, PILI_RTMP send error 9, Bad file descriptor, (140 bytes)

关闭 Mac 的防火墙即可解决问题。

1	偏好设置->安全性与隐私->防火墙