OpenHarmony三方组件：mp4parser

Handpc

发布于 2023-3-16 09:38

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简介

一个读取、写入操作音视频文件编辑的工具。

编译运行

1、通过IDE工具下载依赖SDK，Tools->SDK Manager->Openharmony SDK 把native选项勾上下载，API版本>=9

2、开发板选择RK3568，ROM下载地址. 选择开发板类型是rk3568，请使用最新的版本

3、项目中需要用到资源文件，例如mp4、mp3文件,自行下载素材添加到

entry\src\main\resources\base\media下面

4、项目中需要引用libohffmpeg.so，FFmpeg需要自行编译,要放到library模块 libs\armeabi-v7a和libs\arm64-v8a下面，参考FFmpeg源码链接. 另外FFmpeg的头文件需要拷贝到目录：mp4parser\src\main\cpp\include。关于FFmpeg编译，请参考：Openharmony编译构建指导. 编译脚本参考详见目录:doc/

下载安装

npm install @ohos/mp4parser --save

OpenHarmony npm环境配置等更多内容，请参考如何安装OpenHarmony npm包。

使用说明

视频合成

import {MP4Parser} from "@ohos/mp4parser";
  import {ICallBack} from "@ohos/mp4parser";

    /**
     * 视频合成
     */
  private videoMerge() {
    let getLocalDirPath = getContext(this).cacheDir+"/";
    let that = this;
    let filePathOne = getLocalDirPath + "qqq.mp4";
    let filePathTwo = getLocalDirPath + "www.mp4";
    let outMP4 = getLocalDirPath + "mergeout.mp4";
    var callBack: ICallBack = {
      callBackResult(code: number) {
        that.btnText = "视频合成点击执行"
        that.imageWidth = 0
        that.imageHeight = 0
        if (code == 0) {
          AlertDialog.show({ message: '执行成功' })
        }
        else {
          AlertDialog.show({ message: '执行失败' })
        }
      }
    }
    MP4Parser.videoMerge(filePathOne, filePathTwo, outMP4, callBack);
  }

视频裁剪

import {MP4Parser} from "@ohos/mp4parser";
import {ICallBack} from "@ohos/mp4parser";


  /**
   * 视频裁剪
   */
   private videoClip() {
    let getLocalDirPath = getContext(this).cacheDir+"/";
    let that=this;
    let sTime = "00:00:10";
    let eTime = "00:00:20";
    let sourceMP4 = getLocalDirPath+"qqq.mp4";
    let outMP4 = getLocalDirPath+"clipout.mp4";
    var callBack: ICallBack = {
      callBackResult(code: number) {
        that.btnText="视频裁剪点击执行"
        that.imageWidth=0
        that.imageHeight=0
        if (code == 0) {
          AlertDialog.show({ message: '执行成功' })
        }
        else {
          AlertDialog.show({ message: '执行失败' })
        }
      }
    }
    MP4Parser.videoClip(sTime, eTime, sourceMP4, outMP4, callBack);
  }

音频合成

import {MP4Parser} from "@ohos/mp4parser";
import {ICallBack} from "@ohos/mp4parser";


    /**
   * 音频合成
   */
   private audioMerge() {
    let getLocalDirPath = getContext(this).cacheDir+"/";
    let that = this;
    let filePathOne = getLocalDirPath + "a.mp3";
    let filePathTwo = getLocalDirPath + "b.mp3";
    let outPath = getLocalDirPath + "mergeout.mp3";
    var callBack: ICallBack = {
      callBackResult(code: number) {
        console.log("mp4parser-->audioMerge--->end");
        that.btnText = "音频合成点击执行"
        that.imageWidth = 0
        that.imageHeight = 0
        if (code == 0) {
          AlertDialog.show({ message: '执行成功' })
        }
        else {
          AlertDialog.show({ message: '执行失败' })
        }
      }
    }
    MP4Parser.audioMerge(filePathOne, filePathTwo, outPath, callBack);
  }

音频裁剪

import {MP4Parser} from "@ohos/mp4parser";
import {ICallBack} from "@ohos/mp4parser";


   /**
     * 音频裁剪
     */
   private audioClip() {
    let getLocalDirPath = getContext(this).cacheDir+"/";
    let that = this;
    let sTime = "00:00:00";
    let eTime = "00:00:10";
    let sourcePath = getLocalDirPath + "a.mp3";
    let outPath = getLocalDirPath + "clipout.mp3";
    var callBack: ICallBack = {
      callBackResult(code: number) {
        that.btnText = "音频裁剪点击执行"
        that.imageWidth = 0
        that.imageHeight = 0
        if (code == 0) {
          AlertDialog.show({ message: '执行成功' })
        }
        else {
          AlertDialog.show({ message: '执行失败' })
        }
      }
    }
    MP4Parser.audioClip(sTime, eTime, sourcePath, outPath, callBack);
  }

视频批量合成

import {MP4Parser} from "@ohos/mp4parser";
import {ICallBack} from "@ohos/mp4parser";

  /**
   * 视频批量合成
   */
   private videoMultMerge() {
    let that = this;
    let getLocalDirPath = getContext(this).cacheDir+"/";
    let filePath = getLocalDirPath + "mergeList.txt";
    let outMP4 = getLocalDirPath + "mergeout3.mp4";
    var callBack: ICallBack = {
      callBackResult(code: number) {
        that.btnText2 = "视频合成点击执行"
        that.imageWidth = 0
        that.imageHeight = 0
        if (code == 0) {
          AlertDialog.show({ message: '执行成功' })
        }
        else {
          AlertDialog.show({ message: '执行失败' })
        }
      }
    }
    MP4Parser.videoMultMerge(filePath, outMP4, callBack);
  }

音频批量合成

import {MP4Parser} from "@ohos/mp4parser";
import {ICallBack} from "@ohos/mp4parser";

  /**
   * 音频批量合成
   */
  private audioMultMerge() {
    let getLocalDirPath = getContext(this).cacheDir+"/";
    let that = this;
    let filePath = getLocalDirPath + "mergemp3List.txt";
    let outPath = getLocalDirPath + "mergeout3.mp3";
    var callBack: ICallBack = {
      callBackResult(code: number) {
        that.btnText2 = "音频合成点击执行"
        that.imageWidth = 0
        that.imageHeight = 0
        if (code == 0) {
          AlertDialog.show({ message: '执行成功' })
        }
        else {
          AlertDialog.show({ message: '执行失败' })
        }
      }
    }
    MP4Parser.audioMultMerge(filePath, outPath, callBack);
  }

接口说明

import {MP4Parser} from "@ohos/mp4parser";

视频合成MP4Parser.videoMerge()
视频裁剪MP4Parser.videoClip()
批量视频合成MP4Parser.videoMultMerge()
音频合成MP4Parser.audioMerge()
音频裁剪MP4Parser.audioClip()
音频批量合成MP4Parser.audioMultMerge()

兼容性

DevEco Studio 版本：DevEco Studio 3.1 Beta1及以上版本。
OpenHarmony SDK版本：API version 9 及以上版本。

目录结构

|---- mp4parser  
|     |---- entry  # 示例代码文件夹
|     |---- mp4parser  # mp4parser库文件夹
|           |---- MP4Parser.ets  # 对外接口
|     |---- README.MD  # 安装使用方法