EBU Tech 3350

EBU-TT Part 1 - Subtitle format definition

This is the specification of an XML based archiving and interchange format for EBU-TT subtitles. This version 1.1 provides alignment with EBU-TT-D and adds metadata to support usage requirements expressed by the UK's Digital Production Partnership.

Open file (pdf, 1.5 MB)

Version 1.1 of EBU Tech 3350 (EBU-TT Part 1) is the first update since the version 1.0 publication in July 2012. The main requirements that have been resolved by this revision are:

  • Alignment with the specification EBU Tech 3380 (EBU-TT-D) that was published in January 2014 for the distribution of subtitles over IP based networks, so that EBU-TT-D documents are now EBU-TT Part 1 conformant;
  • Integration of errata for issues identified in Version 1.0;
  • Definition of new metadata, including support for usage requirements submitted by the Digital Production Partnership (DPP).

detailed changelog is available here.


The following translations of this document are available. Please note the translations may not be based on the latest version; see the year mentioned in brackets. These translations are courtesy of the translaters and hosted by the EBU 'as is'. The official and definitive version is the EBU English version.

Russian version of EBU Tech 3350 [2012] - Special thanks to EBU Member RTR.