java上传视频截图

1，到CSDN下载：　ffmpeg和mencoder命令使用的总结(超级全面)

2，两个程序：

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 ldfilepath = "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;  }  //同步使只能有一个进程执行该方法（实现格式转换进程完成后执行截图进程操作）  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;    }  }}

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