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Subtitle library

fr.noop.subtitle provides parsers and writers for different subtitle formats:

  • vtt
  • srt
  • sami (smi)
  • stl ebu
  • ttml

VTT

Advanced features

  • voices (v tag)
  • styles
  • classes

Parser

Supported advanced features:

  • voices
  • styles
  • classes

Usage:

import fr.noop.subtitle.vtt.*;
...
VttParser parser = new VttParser("utf-8");
VttObject subtitle = parser.parse(new FileInputStream("/tmp/read/test.vtt"));

Writer

No advanced features implemented.

Usage:

import fr.noop.subtitle.vtt.*;
...
VttObject subtitle;
...
VttWriter writer = new VttWriter("utf-8");
writer.write(subtitle, new FileOutputStream("/tmp/write/test.vtt"));

SRT

Parser

Usage:

import fr.noop.subtitle.srt.*;
...
SrtParser parser = new SrtParser("utf-8");
SrtObject subtitle = parser.parse(new FileInputStream("/tmp/read/test.srt"));

Writer

Usage:

import fr.noop.subtitle.srt.*;
...
SrtObject subtitle;
...
SrtWriter writer = new SrtWriter("utf-8");
writer.write(subtitle, new FileOutputStream("/tmp/write/test.srt"));

SAMI

Parser

Usage:

import fr.noop.subtitle.sami.*;
...
SamiParser parser = new SamiParser("utf-8");
SamiObject subtitle = parser.parse(new FileInputStream("/tmp/read/test.smi"));

Writer

Usage:

import fr.noop.subtitle.sami.*;
...
SamiObject subtitle;
...
SamiWriter writer = new SamiWriter("utf-8");
writer.write(subtitle, new FileOutputStream("/tmp/write/test.smi"));

STL

The implemented STL format is the binary version of STL EBU.
Currently only the reader is provided.

All the specifications described in this document
https://tech.ebu.ch/docs/tech/tech3264.pdf
have been implemented, so you can get data from GSI and TTI blocks.

Advanced features

  • styles
  • positioning

Parser

Usage:

import fr.noop.subtitle.stl.*;
...
StlParser parser = new StlParser();
StlObject subtitle = parser.parse(new FileInputStream("/tmp/read/test.stl"));

TTML

Currently only the writer is provided.

Advanced features

  • styles
  • regions

Parser

Usage:

import fr.noop.subtitle.ttml.*;
import fr.noop.subtitle.model.*;
...
SubtitleObject subtitle;
...
TtmlWriter writer = new TtmlWriter();
writer.write(subtitle, new FileOutputStream("/tmp/write/test.ttml"));

Jar package

To create an executable jar using maven, run the following in the directory
where pom.xml is (Note: Maven must already be installed):

mvn package

This will create the executable jar under target/subtitle-.*.jar

Convert from command line

Usage:

java -jar subtitle-*.jar -i input-file -o output-file

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