Welcome to ttml-validator’s documentation!

ttml-validator is a Python project for validating TTML files. It currently validates two profiles, EBU-TT-D and IMSC Text conforming to the BBC Subtitle Guidelines, and DAPT.

Contents:

• Usage
  • Setup
  • Running the validator script
  • Validating many files and collating the results
• Testing
  • Running the tests
  • Unit tests
  • Test coverage
• How ttml-validator works internally
  • Desired characteristics of the validator
  • Validation algorithm
  • Supported profiles of TTML
• Dependencies
  • Encoding checks: charset-normalizer
  • XML Schema checks: xmlschema and XSDs
  • Registries
  • External test suites
  • Development dependencies
• Pre-parse Checks
  • Character encoding issues
  • XML structure issues
• XML (post-parsing) Checks
• Validation Logging
• Development
  • Contribution requirements
  • Code of conduct
  • Code hygiene
• src package
  • Subpackages
  • Submodules
  • src.styleAttribs module
  • src.timeExpression module
  • src.ttmlValidator module
  • src.validationCollater module
  • src.xmlUtils module
  • Module contents

Indices and tables

• Index

• Module Index

• Search Page