jsrt

A small SRT parser and editor in Java. SRT is a subtitle file format.

Download

https://github.com/fredyw/jsrt/releases

How to Build

jsrt uses Gradle build system and requires Java 8 to build.

Building jsrt JAR

gradle

The JAR will be created in dist directory.

Running jsrt-gui

java -jar dist/jsrt-gui-<version>.jar

Screenshot

Examples

in.srt

1
00:00:20,000 --> 00:00:24,400
Hello World. This is a long text.
Bye World. This is a short text.

2
00:00:24,600 --> 00:00:27,800
Foo Bar
Bar Foo

out1.srt

1
16:17:55,370 --> 16:17:55,370
Hello
World

2
16:17:55,370 --> 16:17:55,370
Bye
World

out2.srt

1
00:00:05,000 --> 00:00:07,000
Test

2
00:00:20,100 --> 00:00:24,500
Hello
World.
This is a
long text.
Bye World.
This is a
short
text.

3
00:00:24,600 --> 00:00:27,800
Foo Bar
Bar Foo

4
00:01:05,000 --> 00:01:07,000
Test

Main.java

package examples;

import java.io.File;
import java.util.Arrays;
import java.util.Date;

import org.fredy.jsrt.api.SRT;
import org.fredy.jsrt.api.SRTInfo;
import org.fredy.jsrt.api.SRTReader;
import org.fredy.jsrt.api.SRTTimeFormat;
import org.fredy.jsrt.api.SRTWriter;
import org.fredy.jsrt.editor.SRTEditor;

public class Main {
    private static void print(SRTInfo info) {
        for (SRT s : info) {
            System.out.println("Number: " + s.number);
            System.out.println("Start time: " + SRTTimeFormat.format(s.startTime));
            System.out.println("End time: " + SRTTimeFormat.format(s.endTime));
            System.out.println("Texts:");
            for (String line : s.text) {
                System.out.println("    " + line);
            }
            System.out.println();
        }
    }
    
    private static void testRead() {
        SRTInfo info = SRTReader.read(new File("in.srt"));
        print(info);
    }
    
    private static void testWrite() {
        SRTInfo info = new SRTInfo();
        Date d = new Date();
        info.add(new SRT(1, d, d, "Hello", "World"));
        info.add(new SRT(2, d, d, "Bye", "World"));
        
        File f = new File("out1.srt");
        f.deleteOnExit();
        SRTWriter.write(f, info);
    }
    
    private static void testEdit() {
        SRTInfo info = SRTReader.read(new File("in.srt"));
        SRTEditor.updateText(info, 1, 10);
        SRTEditor.updateTime(info, 1, SRTTimeFormat.Type.MILLISECOND, 100);
        SRTEditor.prependSubtitle(info, "00:00:05,000", "00:00:07,000",
            Arrays.asList("Test"));
        SRTEditor.appendSubtitle(info, "00:01:05,000", "00:01:07,000",
            Arrays.asList("Test"));
        
        print(info);
        
        // Write it back
        File f = new File("out2.srt");
        f.deleteOnExit();
        SRTWriter.write(f, info);
    }
    
    public static void main(String[] args) {
        testRead();
        testWrite();
        testEdit();
    }
}