# mp4parser

**Repository Path**: wangyingjun02/mp4parser

## Basic Information

- **Project Name**: mp4parser
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 35
- **Created**: 2023-04-14
- **Last Updated**: 2024-06-18

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# mp4parser

## 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](http://ci.openharmony.cn/dailys/dailybuilds). 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](https://gitee.com/openharmony/third_party_ffmpeg). 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](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/subsystems/subsys-build-all.md). 编译脚本参考详见目录:doc/

## 下载安装
```shell
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](https://gitee.com/openharmony-tpc/docs/blob/master/OpenHarmony_npm_usage.md) 。

## 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";`

1. 视频合成
   `MP4Parser.videoMerge()`
2. 视频裁剪
   `MP4Parser.videoClip()`
3. 批量视频合成
   `MP4Parser.videoMultMerge()`
4. 音频合成
   `MP4Parser.audioMerge()`
5. 音频裁剪
   `MP4Parser.audioClip()`
6. 音频批量合成
   `MP4Parser.audioMultMerge()`

## 约束与限制
在下述版本验证通过：

- [DevEco Studio](https://developer.harmonyos.com/cn/develop/deveco-studio#download) 版本：DevEco Studio 3.1 Beta1版本。
- OpenHarmony SDK版本：API version 9 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                    
````

## 贡献代码
使用过程中发现任何问题都可以提 [Issue](https://gitee.com/openharmony-tpc/mp4parser/issues) 给我们，当然，我们也非常欢迎你给我们发 [PR](https://gitee.com/openharmony-tpc/mp4parser/pulls) 。

## 开源协议
本项目基于 [Apache License 2.0](https://gitee.com/openharmony-tpc/mp4parser/blob/master/LICENSE) ，请自由地享受和参与开源。