视频编辑

基于ffmpeg的视频编辑应用

AndroVid专业视频编辑 http://apk.gfan.com/Product/App274154.html
Magisto视频编辑 http://sj.zol.com.cn/magisto/
Video Edit+ http://www.appchina.com/app/com.w6soft.videoedit/
视频编辑器乐七视频秀 http://apk.hiapk.com/appinfo/com.xvideostudio.videoeditor

Vitamio Recorder 2.0 (VCamera)

功能介绍

VitamioRecorder帮助开发者实现 Android 平台上的短视频应用开发。提供视频录制、后滤镜、炫酷 MV 主题、后期强大的 FFMPEG 命令行支持,可实现水印、音量控制等诸多功能。

代码下载

https://www.vitamio.org/docs/news/2014/0911/36.html

bug: 不能挨个删除，只能删除最后一个

fix, 在MediaObject.java的removePart()方法中增加如下代码
```
 	if (part == mCurrentPart) {
 		mCurrentPart = null;
 	}
```

源码分析

主要流程概述
1. 调用camera实现分段拍摄，存成n.ts
2. 调用ffmpeg，将多段ts合并为一个mp4文件
3. 调用ffmpeg，将上一步的mp4文件加滤镜效果
详细流程图
native接口实际传的参数

//app启动初始化 //UtilityAdapter.FFmpegInit(Object, String) line: not available [native method] [local variables unavailable]
versionName=1.0&versionCode=1&sdkVersion=1.2.0&android=4.0.3&device=HTC T328w

//UtilityAdapter.FilterParserAction(String, int) line: not available [native method] [local variables unavailable]
"", PARSERACTION_FREE

//UtilityAdapter.FilterParserAction(String, int) line: not available [native method] [local variables unavailable]
"", PARSERACTION_INIT

//UtilityAdapter.RenderInputSettings(int, int, int, int) line: not available [native method] [local variables unavailable]
640, 480, 0, UtilityAdapter.FLIPTYPE_NORMAL

//UtilityAdapter.RenderOutputSettings(int, int, int, int) line: not available [native method] [local variables unavailable]
480, 480, mFrameRate, UtilityAdapter.OUTPUTFORMAT_YUV | UtilityAdapter.OUTPUTFORMAT_MASK_MP4 /| UtilityAdapter.OUTPUTFORMAT_MASK_HARDWARE_ACC/

//点击开始分段拍摄 //UtilityAdapter.FilterParserAction(String, int) line: not available [native method] [local variables unavailable]
cmd, UtilityAdapter.PARSERACTION_START cmd=filename = "/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418006696882/0.ts";

UtilityAdapter.RenderDataYuv(data);

//点下一步开始合并分段视频 //UtilityAdapter.FFmpegRun(String, String) line: not available [native method] [local variables unavailable]
"", cmd cmd=ffmpeg -d stdout -loglevel verbose -i "/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418006696882/0.ts" -vcodec copy -acodec copy -absf aac_adtstoasc -f mp4 -movflags faststart "/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418006696882/1418006696882.mp4"

UtilityAdapter.registerNativeListener(UtilityAdapter$OnNativeListener) line: 294

//加载主题 //UtilityAdapter.SaveData(saveFile.toString(), pixels, UtilityAdapter.OUTPUTFORMAT_MASK_ZIP) saveFile.toString()=/data/data/com.yixia.camera.demo/cache/Theme/theme_author.bmp

//预览 //UtilityAdapter.FilterParserInit(getSetting(false), mSurfaceHolder.getSurface()); getSetting(false)=filterpath=/data/data/com.yixia.camera.demo/cache/Theme/Empty; commonpath=/data/data/com.yixia.camera.demo/cache/Theme/Common; length=230.90; inputva=/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418006696882/1418006696882.mp4; sourceauthor=-f rawvideo -r 15 -s 182x30 -pix_fmt rgba -i "zip:/data/data/com.yixia.camera.demo/cache/Theme/theme_author.bmp"; authorsizew=182; authorsizeh=30; bitrate=1500; randomfactor=1418007231;

UtilityAdapter.ndkAudioWrite(short[], int) line: 239
NativeStart.run() line: not available [native method]

UtilityAdapter.ndkNotify(int, int) line: 284
NativeStart.run() line: not available [native method]

int progress = UtilityAdapter.FilterParserInfo(UtilityAdapter.FILTERINFO_PROGRESS);

//设置主题滤镜时参数 //UtilityAdapter.FilterParserInit(getSetting(false), mSurfaceHolder.getSurface()); //getSetting(false)= filterpath=/data/data/com.yixia.camera.demo/cache/Theme/MusicVideoAssets/Love; commonpath=/data/data/com.yixia.camera.demo/cache/Theme/Common; length=32.82; inputva=/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418008201601/1418008201601.mp4; sourceauthor=-f rawvideo -r 15 -s 182x30 -pix_fmt rgba -i "zip:/data/data/com.yixia.camera.demo/cache/Theme/theme_author.bmp"; authorsizew=182; authorsizeh=30; bitrate=1500; randomfactor=1418008270;

filterpath=/data/data/com.yixia.camera.demo/cache/Theme/MusicVideoAssets/Love; commonpath=/data/data/com.yixia.camera.demo/cache/Theme/Common; length=32.82; inputva=/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418008201601/1418008201601.mp4; sourceauthor=-f rawvideo -r 15 -s 182x30 -pix_fmt rgba -i "zip:/data/data/com.yixia.camera.demo/cache/Theme/theme_author.bmp"; authorsizew=182; authorsizeh=30; bitrate=1500; randomfactor=1418008270;

filterpath=/data/data/com.yixia.camera.demo/cache/Theme/MusicVideoAssets/Love; commonpath=/data/data/com.yixia.camera.demo/cache/Theme/Common; filter=-i "/data/data/com.yixia.camera.demo/cache/Theme/FilterAssets/1974/1974.bmp"; length=32.82; inputva=/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418008201601/1418008201601.mp4; sourceauthor=-f rawvideo -r 15 -s 182x30 -pix_fmt rgba -i "zip:/data/data/com.yixia.camera.demo/cache/Theme/theme_author.bmp"; authorsizew=182; authorsizeh=30; bitrate=1500; randomfactor=1418008270;

filterpath=/data/data/com.yixia.camera.demo/cache/Theme/MusicVideoAssets/Dreamworld; commonpath=/data/data/com.yixia.camera.demo/cache/Theme/Common; sourcemusic=-i "/data/data/com.yixia.camera.demo/cache/Theme/MusicVideoAssets/Dreamworld/Lover.mp3"; length=32.82; inputva=/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418008201601/1418008201601.mp4; sourceauthor=-f rawvideo -r 15 -s 182x30 -pix_fmt rgba -i "zip:/data/data/com.yixia.camera.demo/cache/Theme/theme_author.bmp"; authorsizew=182; authorsizeh=30; bitrate=1500; randomfactor=1418008270;

//下一步保存时，startEncoding //UtilityAdapter.FilterParserInit(getSetting(true), null); //getSetting(true)=

filterpath=/data/data/com.yixia.camera.demo/cache/Theme/MusicVideoAssets/Dreamworld; commonpath=/data/data/com.yixia.camera.demo/cache/Theme/Common; sourcemusic=-i "/data/data/com.yixia.camera.demo/cache/Theme/MusicVideoAssets/Dreamworld/Lover.mp3"; length=32.82; inputva=/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418008201601/1418008201601.mp4; sourceauthor=-f rawvideo -r 15 -s 182x30 -pix_fmt rgba -i "zip:/data/data/com.yixia.camera.demo/cache/Theme/theme_author.bmp"; authorsizew=182; authorsizeh=30; bitrate=1500; randomfactor=1418008270; outputv="/mnt/emmc/DCIM/100MEDIA/VCameraDemo/1418008201601.mp4";



### Vitamio Recorder 2.0 的一些notes
* 目前版本仅仅支持支持ARMV7 CPU， 我们要用于手机端的话，如何适配别的cpu??
* 拍摄视频没有时间限制的话， 长视频的转码时间将难以接受。且app有概率崩溃。
* 拍长视频的话，文件大小也是个问题，上传服务器的时间将很长。


### related
* [[camera]]

Just build something.

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