一个修改电影字幕时间偏移的小程序
今天晚上看电影的时候在射手网上下载了一个字幕文件，看了一会儿就发觉字幕有点跟不上电影，差了两三秒钟吧，我想这应该是大家都遇到过的问题。怎么办呢，既然咱是程序员，那就动动手，发挥一下，于是花了20分钟写了这么个小程序，很简陋，但是记录下来，一方面为了做个记录，另一方面也为了能够帮到别人，如果你也有同样的需求，希望能节省一点你的时间吧
附上jar文件，使用方法 java -jar SrtTimelineChanger 字幕文件路径 调节的时间（以毫秒计算） 如： java -jar SrtTimelineChanger 1.srt -3000
只适用于.srt文件，或是时间方式为 HH:MM:SS,nnn ---> HH:MM:SS,nnn的字幕文件，编码为gbk
代码如下：
1 /* 2 * Copyright 2013 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.yueang.tools; 18 19 import java.io.BufferedReader; 20 import java.io.BufferedWriter; 21 import java.io.File; 22 import java.io.FileInputStream; 23 import java.io.FileNotFoundException; 24 import java.io.FileOutputStream; 25 import java.io.IOException; 26 import java.io.InputStreamReader; 27 import java.io.OutputStreamWriter; 28 import java.io.UnsupportedEncodingException; 29 30 public class SrtTimelineChanger { 31 32 public static void main(String[] args) { 33 34 if (args.length != 2) { 35 System.out.print("params wrong"); 36 return; 37 } 38 39 String filePath = args[0]; 40 int timeShift = Integer.parseInt(args[1]); 41 42 SrtTimelineChanger changer = new SrtTimelineChanger(); 43 try { 44 changer.change(filePath, timeShift); 45 } catch (UnsupportedEncodingException e) { 46 // TODO Auto-generated catch block 47 e.printStackTrace(); 48 } catch (FileNotFoundException e) { 49 // TODO Auto-generated catch block 50 e.printStackTrace(); 51 } catch (IOException e) { 52 // TODO Auto-generated catch block 53 e.printStackTrace(); 54 } 55 56 System.out.print("Exit"); 57 } 58 59 private void change(String filePath, int timeShift) throws IOException { 60 File file = new File(filePath); 61 62 StringBuilder sb = new StringBuilder(); 63 BufferedReader reader = new BufferedReader(new InputStreamReader( 64 new FileInputStream(file), "gbk")); 65 String line = reader.readLine(); 66 while (line != null) { 67 sb.append(changeLine(line, timeShift)); 68 sb.append("\r\n"); 69 line = reader.readLine(); 70 } 71 72 reader.close(); 73 File outFile = new File(filePath + ".out"); 74 if (outFile.exists()) { 75 outFile.delete(); 76 } 77 outFile.createNewFile(); 78 BufferedWriter writer = new BufferedWriter(new OutputStreamWriter( 79 new FileOutputStream(outFile), "gbk")); 80 writer.write(sb.toString()); 81 writer.flush(); 82 writer.close(); 83 } 84 85 private Object changeLine(String line, int timeShift) { 86 if (line.matches("^\\d\\d:\\d\\d:\\d\\d,\\d\\d\\d.*\\d\\d:\\d\\d:\\d\\d,\\d\\d\\d$")) { 87 int start = calculate(line.substring(0, 12)); 88 int end = calculate(line.substring(17, 29)); 89 90 StringBuilder sb = new StringBuilder(); 91 sb.append(expand(start + timeShift)); 92 sb.append(" --> "); 93 sb.append(expand(end + timeShift)); 94 95 System.out.println(line); 96 System.out.println(sb.toString()); 97 98 return sb.toString(); 99 } 100 101 return line; 102 } 103 104 private String expand(long l) { 105 int hour = (int) (l / 3600000); 106 int min = (int) ((l - hour * 3600000) / 60000); 107 int sec = (int) ((l - hour * 3600000 - min * 60000) / 1000); 108 int mili = (int) (l - hour * 3600000 - min * 60000 - sec * 1000); 109 110 return String.format("%02d:%02d:%02d,%03d", hour, min, sec, mili); 111 } 112 113 private int calculate(String time) { 114 int hour = Integer.parseInt(time.substring(0, 2)); 115 int min = Integer.parseInt(time.substring(3, 5)); 116 int sec = Integer.parseInt(time.substring(6, 8)); 117 int mili = Integer.parseInt(time.substring(9, 12)); 118 119 return mili + sec * 1000 + min * 60000 + hour * 3600000; 120 } 121 }
