VTT File Format

VTT stores all annotation data in a VTT file format. The format is simple and intuitive. This VTT format can be used to open and save annotated text files in VTT. In addition, this file format can be integrated with other NLP programs for writing out and reading in. There are several version VTT file formats since the first release in 2009. Please refer to the Versions of VTT file Formats

In general, there are four sections of VTT file formats

• Meta Data
  • meta data include default tags file and file (saving) history
  • can be omitted
  • automatically generated by VTT

• Text Content
  • the original not-tagged text in UTF-8
  • must have

• Tags Configuration
  • tags definition, each line represents a tag configuration
  • can be omitted (if it is pure text)
  • must have to associated markups information

• Markups Information
  • markup information, each line represents a markup information
  • can be omitted (if it is pure text)
  • all tag's information must defined in tags configuration