java上傳視頻截圖

1，到CSDN下載：　ffmpeg和mencoder命令使用的總結(超級全面)

2，兩個程序：

package national;
import java.util.ArrayList;
import java.util.List;
public class VideoProcess {
public static boolean processTransToImg2(String oldfilepath,String newfilename,String 

newimg){
       System.out.println(oldfilepath+"->"+newfilename+"-

>"+newimg);
       List<String> commendF = new ArrayList<String>();
       List<String> commendI=new java.util.ArrayList<String>();
       commendF.add("F://mencoder//summer//mencoder");
       commendF.add(oldfilepath);
       commendF.add("-o");
       commendF.add(newfilename);
       commendF.add("-of");
       commendF.add("lavf");
       commendF.add("-oac");
       commendF.add("mp3lame");
       commendF.add("-lameopts");
       commendF.add("abr:br=32:vol=1");
       commendF.add("-srate");
       commendF.add("22050");
       commendF.add("-ovc");
       commendF.add("lavc");
       commendF.add("-lavcopts");
        commendF.add

("vcodec=flv:vbitrate=480:mbd=2:v4mv:turbo:vb_strategy=1:last_pred=2:trell");
       commendF.add("-vf");
       commendF.add("scale=400:226");
       commendI.add("F://mencoder//summer//ffmpeg.exe");
       commendI.add("-i");
       commendI.add(oldfilepath);
       commendI.add("-y");
       commendI.add("-f");
       commendI.add("image2");
       commendI.add("-ss");
       commendI.add("8");
       commendI.add("-t");
       commendI.add("0.001");
       commendI.add("-s");
       commendI.add("100x100");
       commendI.add(newimg);
       try {
           ProcessClass.exec(commendF);
           ProcessClass.exec(commendI);
           return true;
       } catch (Exception e) {
           e.printStackTrace();
           return false;
       }
    }
    public static void main(String[] args){
       String oldfilepath = "f://shanghaitan.rm";
       String newfilename = "f://shanghaitan.flv";
       String newimg = "f://shanghaitan.jpg";
       System.out.println("--------------");
       processTransToImg2(oldfilepath,newfilename,newimg);
       System.out.println("over");
    }
 }
---------------------
package national;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class ProcessClass{
  public List<String> commendList = new ArrayList<String>();
  public ProcessClass(List<String> commendList){
      this.commendList = commendList;
  }
  //同步使只能有一個進程執行該方法（實現格式轉換進程完成後執行截圖進程操作）
  public static synchronized Process exec(List<String> commendlist){
      StringBuffer strBuf = new StringBuffer();
      for(Iterator iter =commendlist.iterator();iter.hasNext(); ){
         String Strtemp = (String)iter.next();
         strBuf.append(Strtemp);
         strBuf.append(" ");
      }
      try {
       return Runtime.getRuntime().exec(strBuf.toString());
    } catch (IOException e) {
       e.printStackTrace();
       return null;
    }
  }
}