ffmpeg+avs实现视频格式转换，截图，加水印的全过程

import java.io.File;

import java.util.List;
public class CodeConven {

    private static String OldPath;
    private static String NewPath;
    private static String ImgPath;

 public static boolean process() {
  int type = checkContentType();
  boolean status = false;
  if (type == 0) {
      status = processFLV(OldPath);// 直接将文件转为flv文件
      ffmpegTransImage(OldPath);
  } 
  return status;
    }
    private static int checkContentType() {
  String type = OldPath.substring(OldPath.lastIndexOf(".") + 1,
   OldPath.length()).toLowerCase();

  if (type.equals("avi")) {
      return 0;
  } else if (type.equals("mpg")) {
      return 0;
  } else if (type.equals("wmv")) {
      return 0;
  } else if (type.equals("3gp")) {
      return 0;
  } else if (type.equals("mov")) {
      return 0;
  } else if (type.equals("mp4")) {
      return 0;
  } else if (type.equals("asf")) {
      return 0;
  } else if (type.equals("asx")) {
      return 0;
  }else if (type.equals("flv")) {
      return 0;
  }
  else if (type.equals("wmv9")) {
      return 0;
  } else if (type.equals("rm")) {
      return 0;
  } else if (type.equals("rmvb")) {
      return 0;
  }
  return 9;
    }

    private static boolean checkfile(String OldPath) {
  File file = new File(OldPath);
  if (!file.isFile()) {
      return false;
  }
  return true;
    }

 

    // ffmpeg能解析的格式：（asx，asf，mpg，wmv，3gp，mp4，mov，avi，flv，rmvb,rm等--*其他的格式没有试过了）
    private static boolean processFLV(String oldfilepath) {

  if (!checkfile(OldPath)) {
      System.out.println(oldfilepath + " is not file");
      return false;
  }
  System.out.println("过来了没");
  List<String> commend = new java.util.ArrayList<String>();
  commend.add("F:\\ffmpeg\\ffmpeg");
  commend.add("-i");
  commend.add("F:\\avs\\AviSynth 2.5\\Examples\\1.avs"); //avs存放路径
  commend.add("-ab");
  commend.add("64");
  commend.add("-acodec");
  commend.add("libmp3lame");
  commend.add("-ac");
  commend.add("2");
  commend.add("-ar");
  commend.add("22050");
  commend.add("-r");
  commend.add("24");
  commend.add("-y");
  commend.add(NewPath);
  try {
   ProcessBuilder builder = new ProcessBuilder();
      builder.command(commend);
      builder.start();
      return true;
  } catch (Exception e) {
      e.printStackTrace();
      return false;
  }
    }
   
    public static boolean ffmpegTransImage(String imgPath) {  
        List<String> commend = new java.util.ArrayList<String>();   
        commend.add("F:\\ffmpeg\\ffmpeg.exe");  
        commend.add("-i");
        commend.add(imgPath);
        commend.add("-y");
        commend.add("-f");  
        commend.add("image2");  
        commend.add("-ss");  
        commend.add("38");  
        commend.add("-t");  
        commend.add("1");  
        commend.add("-s"); 
        commend.add("320x240");  
        commend.add(ImgPath);
        System.out.print("到底截图了没.............");
        try {  
            ProcessBuilder builder = new ProcessBuilder();  
            builder.command(commend);  
            builder.start();
            System.out.println("截完没？");
            return true;  
        } catch (Exception e){  
            e.printStackTrace();  
            return false;  
        }  
    }   
   
    public String getImgPath() {
  return ImgPath;
 }

 public void setImgPath(String imgPath) {
  ImgPath = imgPath;
 }

 public String getOldPath() {
 return OldPath;
    }

    public void setOldPath(String oldPath) {
 OldPath = oldPath;
    }

    public String getNewPath() {
 return NewPath;
    }

    public void setNewPath(String newPath) {
 NewPath = newPath;
    }
   
}

 

 

//avs的写法

LoadPlugin("C:/WINDOWS/system32/vsfilter.dll")
Video0 = DirectShowSource("D:/avi/6.avi",fps=23.976,convertfps=true)
Video0 = ConvertToRGB(Video0)
Video1 = Trim(Video0,1,122)
Logo_1 = ImageReader("F:/ffmpeg/logobai.png").ConvertToRGB32
Logo_2 = ImageReader("F:/ffmpeg/logohei.png").ConvertToRGB32
Logo_3 = Logo_1.mask(Logo_2)
Video0 = Trim(Video0,0,0).Layer(Logo_3,"add",255,0,0)
Video0 = ConvertToYV12(Video0)
return Video0

 

//avs第二种写法

LoadPlugin("C:/WINDOWS/system32/vsfilter.dll")
video = DirectShowSource("D:/avi/6.avi")
logo = ImageSource("F:/ffmpeg/logobai.png")
logomask = ImageSource("F:/ffmpeg/logohei.png")
overlay(video,logo,mask=logomask,opacity=0.8)