java 实现视频转换通用工具类：视频截图-Ffmpeg（四）

java 实现视频转换通用工具类：视频相互转换-总方法及Mencoder（二）

1. /** 
2.        *  ffmpeg 截图，自定义命令行 
3.        * @param srcVideoPath 源文件 
4.        * @param shellLine 自定义shell命令行 
5.        * @param tarImagePath 目标文件 
6.        * @return 
7.        */  
8.        public static boolean processFfmpegImage(String srcVideoPath,String shellLine,String tarImagePath) {     
9.          if (!checkfile(srcVideoPath)) {    
10.             logger.error("【" + srcVideoPath + "】  不存在 !");  
11.                 return false;    
12.             }    
13.            List<String> commend = new java.util.ArrayList<String>();    
14.   
15.            commend.add(ffmpegPath);    
16.   
17.            commend.add("-i");    
18.   
19.            commend.add(srcVideoPath);    
20.              
21.            commend.add(shellLine);   
22.   
23.            commend.add(tarImagePath);    
24.   
25.            try {    
26.                ProcessBuilder builder = new ProcessBuilder();   
27.                builder.command(commend);   
28.                Process process = builder.start();   
29.                InputStream is = process.getErrorStream();   
30.                InputStreamReader inputStreamReader = new InputStreamReader(is);   
31.                BufferedReader inputBufferedReader = new BufferedReader(   
32.                    inputStreamReader);   
33.                String line = null;   
34.                StringBuilder stringBuilder = new StringBuilder();   
35.               while ((line = inputBufferedReader.readLine()) != null) {   
36.                  stringBuilder.append(line);   
37.                }   
38.                inputBufferedReader.close();   
39.                inputBufferedReader = null;   
40.                inputStreamReader.close();   
41.                inputStreamReader = null;   
42.                is.close();   
43.                is = null;   
44.                if (!checkfile(tarImagePath)) {    
45.                    logger.info(tarImagePath + " is not exit! processFfmpegImage 转换不成功 !");  
46.                    return false;    
47.                }    
48.                return true;    
49.            } catch (Exception e) {  
50.                logger.error("【" + srcVideoPath + "】  processFfmpegImage 转换不成功 !");  
51.                return false;   
52.            }  
53.        }    

1. /** 
2.       * ffmpeg 截图，并指定图片的大小 
3.       * @param srcVideoPath 
4.       * @param tarImagePath 截取后图片路径 
5.       * @param width 截图的宽 
6.       * @param hight 截图的高 
7.       * @param offsetValue 表示相对于文件开始处的时间偏移值 可以是分秒 
8.       * @param vframes 表示截图的桢数 
9.       *  
10.       * @return 
11.       */  
12.       public static boolean processFfmpegImage(String srcVideoPath,String tarImagePath,int width,int hight,float offsetValue,float vframes) {    
13.          if (!checkfile(srcVideoPath)) {    
14.               logger.error("【" + srcVideoPath + "】  不存在 !");  
15.                return false;    
16.            }    
17.           List<String> commend = new java.util.ArrayList<String>();    
18.   
19.           commend.add(ffmpegPath);    
20.   
21.           commend.add("-i");    
22.   
23.           commend.add(srcVideoPath);    
24.             
25.           commend.add("-y");    
26.   
27.           commend.add("-f");   
28.             
29.           commend.add("image2");    
30.             
31.           commend.add("-ss");    
32.             
33.           commend.add(offsetValue+"");  //在视频的某个插入时间截图，例子为5秒后  
34.             
35.           commend.add("-vframes");    
36.             
37.           commend.add(vframes + "");  //截图的桢数  
38.             
39.           commend.add("-s");    
40.             
41.           commend.add(width + "x" +hight); //截图的的大小  
42.   
43.           commend.add(tarImagePath);    
44.   
45.           try {    
46.               ProcessBuilder builder = new ProcessBuilder();   
47.               builder.command(commend);   
48.               Process process = builder.start();   
49.               doWaitFor(process);    
50.               process.destroy();   
51.               if (!checkfile(tarImagePath)) {    
52.                   logger.info(tarImagePath + " is not exit!  processFfmpegImage 转换不成功 !");    
53.                   return false;    
54.               }    
55.               return true;    
56.           } catch (Exception e) {  
57.               logger.error("【" + srcVideoPath + "】 processFfmpegImage  转换不成功 !");  
58.               return false;   
59.           }  
60.       }