前言

一、NatCorder

Unity全平台录屏工具,工具的具体内容在其他博客里都能找到,但找了很多博客内容都差不多,用的时候还要自己去看一下源码,官方的demo在笔记本上都会录制摄像头看到的画面,很不任性,

二、使用步骤

1.引入库

我使用的是NatCorder1.5.1,unity2019版本.在官方三个demo场景Replaycam里面修改来的.最后的效果.添加了一个开始时录屏和结束录屏的按钮,一个录制时长的Text.

2.Ui

如果用到录制摄像头的功能,可以吧里面的预制UI隐藏掉或者删掉,同时添加一个开始和结束录屏的Button和显示录屏时长的Text,
录制视屏的脚本都在ReplayCam上面挂着,最后通过调用它上面的ReplayCam脚本里面的方法,录制.

3.ReplayCam官方脚本

官方脚本,大体上没动过,添加了一些自己理解的注释,和一个
internal Action replayAction;的委托方法,等会要在其他地方赋值,测试时发现录制完成后还要等点时长,可能是转码保存,如果不得他调用完录制完成方法就退出,视屏无法正常播放.

/*
*   NatCorder
*   Copyright (c) 2019 Yusuf Olokoba
*/namespace NatCorder.Examples
{#if UNITY_EDITORusing UnityEditor;
#endifusing UnityEngine;using UnityEngine.UI;using System.Collections;using Clocks;using Inputs;using System;public class ReplayCam : MonoBehaviour{/*** ReplayCam Example* -----------------* This example records the screen using a `CameraRecorder`.* When we want mic audio, we play the mic to an AudioSource and record the audio source using an `AudioRecorder`* -----------------* Note that UI canvases in Overlay mode cannot be recorded, so we use a different mode (this is a Unity issue)*/[Header("Recording")]public int videoWidth = 1280;public int videoHeight = 720;[Header("Microphone")]public bool recordMicrophone;public AudioSource microphoneSource;private MP4Recorder videoRecorder;private IClock recordingClock;private CameraInput cameraInput;private AudioInput audioInput;/// <summary>/// 接収录制完成是的委托方法/// </summary>internal Action replayAction;public void StartRecording(){SetWidthAndHight();// Start recordingrecordingClock = new RealtimeClock();videoRecorder = new MP4Recorder(videoWidth,videoHeight,30,recordMicrophone ? AudioSettings.outputSampleRate : 0,recordMicrophone ? (int)AudioSettings.speakerMode : 0,OnReplay);// Camera.main 设置录制那个摄像机的画面cameraInput = new CameraInput(videoRecorder, recordingClock, Camera.main);if (recordMicrophone){StartMicrophone();audioInput = new AudioInput(videoRecorder, recordingClock, microphoneSource, true);}}private void StartMicrophone(){#if !UNITY_WEBGL || UNITY_EDITOR // No `Microphone` API on WebGL :(// Create a microphone clipmicrophoneSource.clip = Microphone.Start(null, true, 60, 48000);while (Microphone.GetPosition(null) <= 0) ;// Play through audio sourcemicrophoneSource.timeSamples = Microphone.GetPosition(null);microphoneSource.loop = true;microphoneSource.Play();
#endif}public void StopRecording(){// Stop the recording inputsif (recordMicrophone){StopMicrophone();audioInput.Dispose();}cameraInput.Dispose();// Stop recordingvideoRecorder.Dispose();}private void StopMicrophone(){#if !UNITY_WEBGL || UNITY_EDITORMicrophone.End(null);microphoneSource.Stop();
#endif}/// <summary>/// 视频录制完成时调用,在下面上个平台上播放录制的视屏/// </summary>/// <param name="path"></param>private void OnReplay(string path){replayAction();Debug.Log("Saved recording to: " + path);// Playback the video
#if UNITY_EDITOREditorUtility.OpenWithDefaultApp(path);
#elif UNITY_IOSHandheld.PlayFullScreenMovie("file://" + path);
#elif UNITY_ANDROIDHandheld.PlayFullScreenMovie(path);
#endif}/// <summary>/// 设置录制大小/// </summary>private void SetWidthAndHight(){videoWidth = UnityEngine.Screen.width;videoHeight = UnityEngine.Screen.height;}}
}

4.UiCanvas

挂载在上图Canvas上,主要是通过这个脚本来调用ReplayCam脚本上的方法.完成录屏和一些界面提示,

using NatCorder.Examples;
using UnityEngine;
using UnityEngine.UI;
public class UiCanvas : MonoBehaviour
{private Text uiText;private Text btnText;public ReplayCam cam;private int timeNum;private RecordType recordType;void Awake(){uiText = transform.Find("Text").GetComponent<Text>();btnText = transform.Find("Button/Text").GetComponent<Text>();}// Start is called before the first frame updatevoid Start(){transform.Find("Button").GetComponent<Button>().onClick.AddListener(Btn);cam.replayAction += replayAction;}private void OnEnable(){recordType = RecordType.Null; SetRecordType();}private void Btn(){SetRecordType();}void SetRecordType(){switch (recordType){case RecordType.Null:recordType = RecordType.StartRecord;break;case RecordType.StartRecord:StartRectord();recordType = RecordType.StopRecord;break;case RecordType.StopRecord:StopRectord();recordType = RecordType.StartRecord;break;default:break;}btnText.text = recordType == RecordType.StopRecord ? "停止录屏" : "开始录屏";}// Update is called once per framevoid Update(){}/// <summary>/// 开始录屏,调用ReplayCam.StartRecording()方法/// </summary>public void StartRectord(){timeNum = 0;cam.StartRecording();//定时的方法TimerManager.instance.DoLoop(1000, SetTimeText);}/// <summary>/// 结束录屏,调用ReplayCam.StopRectord()方法/// </summary>public void StopRectord(){cam.StopRecording();TimerManager.instance.RemoveHandler(SetTimeText);uiText.text = "正在转译编码,缓存视屏";}/// <summary>/// 设置当前录屏时长/// </summary>public void SetTimeText(){timeNum++;uiText.text = "录屏时长:" + timeNum.ToString() + "秒";}/// <summary>/// sdk录屏,保存完成后调用这个方法/// </summary>private void replayAction(){uiText.text = "视屏保存完成,时长:" + timeNum.ToString() + "秒";}
}
public enum RecordType
{Null,StartRecord,StopRecord}

5.缓存路径

缓存路径的代码在MP4Recorder脚本那上面,我在Pc上开发,所以修改了子Pc端缓存的路径,在这个方法里也开始设置缓存视屏的名字.

  [Doc(@"MP4RecorderCtor")]public MP4Recorder (int videoWidth, int videoHeight, int videoFramerate, int audioSampleRate, int audioChannelCount, Action<string> recordingCallback, int videoBitrate = (int)(960 * 540 * 11.4f), int videoKeyframeInterval = 3) {videoWidth = videoWidth >> 1 << 1;videoHeight = videoHeight >> 1 << 1;var readbackFormat = TextureFormat.RGBA32;var recordingDirectory = Application.persistentDataPath;var recordingFilename = string.Format("recording_{0}.mp4", DateTime.Now.ToString("yyyy_MM_dd_HH_mm_ss_fff"));switch (Application.platform) {case RuntimePlatform.OSXEditor:recordingDirectory = Directory.GetCurrentDirectory();goto case RuntimePlatform.OSXPlayer;case RuntimePlatform.OSXPlayer:readbackFormat = TextureFormat.ARGB32;goto case RuntimePlatform.IPhonePlayer;case RuntimePlatform.WebGLPlayer:case RuntimePlatform.WindowsEditor:recordingDirectory = Directory.GetCurrentDirectory();goto case RuntimePlatform.IPhonePlayer;case RuntimePlatform.WindowsPlayer://在Win中视屏缓存路径在包体Exe程序所在目录recordingDirectory = Directory.GetCurrentDirectory();goto case RuntimePlatform.IPhonePlayer;case RuntimePlatform.IPhonePlayer: {var recordingPath = Path.Combine(recordingDirectory, recordingFilename);Debug.Log("下载路径:"+ recordingPath);var nativeRecorder = MediaRecorderBridge.CreateMP4Recorder(videoWidth, videoHeight, videoFramerate, videoBitrate, videoKeyframeInterval, audioSampleRate, audioChannelCount);this.internalRecorder = new MediaRecorderiOS(nativeRecorder, videoWidth, videoHeight, readbackFormat, recordingPath, recordingCallback);break;}case RuntimePlatform.Android: {var recordingPath = Path.Combine(recordingDirectory, recordingFilename);var nativeRecorder = new AndroidJavaObject(@"com.yusufolokoba.natcorder.MP4Recorder", videoWidth, videoHeight, videoFramerate, videoBitrate, videoKeyframeInterval, audioSampleRate, audioChannelCount);this.internalRecorder = new MediaRecorderAndroid(nativeRecorder, videoWidth, videoHeight, recordingPath, recordingCallback);break;}default:Debug.LogError("NatCorder Error: MP4Recorder is not supported on this platform");this.internalRecorder = null; // Self-destruct >:Dbreak;}}

总结

记录NatCorder在Pc端录制视屏的简单demo.
基于natcorder1.5.1版本写的,
找我拿也行,下载也行,下面的下在连接是1.7版本的
csdn下在地址
Gitee地址

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前言