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package ConvertUtil
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import (
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"dsSupport/Utils/FileUtil"
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"dsSupport/Utils/ShellUtil"
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"fmt"
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"os"
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"path"
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"path/filepath"
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"strings"
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)
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//运行的目录
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var runDir string
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// ffmpeg 的命令行位置
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var ffmpeg string
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func init() {
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runDir, _ = os.Getwd()
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ffmpeg=runDir + `\ffmpeg\ffmpeg.exe`
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}
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/**
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功能：对指定的视频文件进行切片
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作者：黄海
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时间：2020-07-08
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*/
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func Cut(source string) {
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//1、源视频文件
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sourcePath := runDir + "/Source/" + source[0:2] + "/" + source
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//2、获取文件后缀
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extension := path.Ext(source)
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//3、输出的文件通配名称
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workingPath := runDir + `/Working/` + source[0:2] + "/"
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if !FileUtil.Exists(workingPath) {
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os.Mkdir(workingPath, os.ModePerm)
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}
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workingPath = workingPath + source[0:36] + "/"
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if !FileUtil.Exists(workingPath) {
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os.Mkdir(workingPath, os.ModePerm)
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}
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targetPath := workingPath + source[0:36] + `_%03d` + extension
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//尝试删除已存在的视频
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var i = 0
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for {
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var f = workingPath + source[0:36] + "_" + fmt.Sprintf("%03d", i) + extension
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if FileUtil.Exists(f) {
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os.Remove(f)
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} else {
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break
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}
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i++
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}
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//4、切片
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cmdLine := ffmpeg + ` -fflags +genpts -i ` + sourcePath + ` -acodec copy -vcodec copy -f segment -segment_time 300 -reset_timestamps 1 -map 0:0 -map 0:1 ` + targetPath
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ShellUtil.ExecCommand(cmdLine)
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}
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/**
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功能：将指定的视频文件，在切片后，获取都生成了哪些切片
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作者：黄海
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时间：2020-07-08
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*/
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func GetAllCutChild(source string) []string {
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filepathNames, err := filepath.Glob(filepath.Join(runDir+`/Working/`+source[0:2]+"/"+source[0:36]+"/", "*"))
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if err!=nil{
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fmt.Println(err.Error())
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}
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return filepathNames
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}
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/**
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功能：将视频转为H264格式的MP4
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作者: 黄海
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时间：2020-07-08
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*/
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func ConvertToH264Mp4(childMovie string) {
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extension := path.Ext(childMovie)
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childMovieMp4 := strings.Replace(childMovie, extension, ".mp4", -1)
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//如果存在则删除之
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if FileUtil.Exists(childMovieMp4) {
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os.Remove(childMovieMp4)
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}
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cmdLine := ffmpeg + ` -i ` + childMovie + ` -c:v libx264 -strict -2 ` + childMovieMp4
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ShellUtil.ExecCommand(cmdLine)
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}
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/**
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功能：生成索引的文本文件
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作者：黄海
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时间：2020-07-08
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*/
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func GenerateIndexTxt(source string,childMovie []string)string{
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content:=make([]string,0)
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for i := range childMovie {
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extension := path.Ext(childMovie[i])
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content= append(content, `file '`+strings.Replace(childMovie[i],extension,".mp4",-1)+`'`)
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}
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//文件位置
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indexName:=runDir+`/Working/`+source[0:2]+"/"+source[0:36]+"/"+source[0:36]+".txt"
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FileUtil.WriteLines(content,indexName)
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return indexName
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}
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/**
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功能：合并视频
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作者：黄海
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时间：2020-07-08
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*/
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func Merge(source string,indexName string){
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Target := runDir + `/Target/` + source[0:2] + "/"
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if !FileUtil.Exists(Target) {
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os.Mkdir(Target, os.ModePerm)
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}
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Target = Target + source[0:36] + "/"
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if !FileUtil.Exists(Target) {
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os.Mkdir(Target, os.ModePerm)
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}
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cmdLine:=ffmpeg+` -f concat -i `+indexName+` -c copy `+Target+"/"+source[0:36]+".mp4"
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ShellUtil.ExecCommand(cmdLine)
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}
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/**
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功能：清除垃圾
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作者：黄海
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时间：2020-07-08
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*/
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func ClearRubbish(source string){
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var deletePath=[]string{"Working","Target"}
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for i := range deletePath {
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//删除目录
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os.RemoveAll(runDir+`/`+deletePath[i]+`/`+source[0:2]+"/"+source[0:36])
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}
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}
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