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CueNorm Public Validator

BBC

BBC Subtitles English (UK), EBU-STL

BBC linear-broadcast subtitle delivery profile, EBU-STL teletext

Validate a file with this profile bbc-subtitle-en-gb-ebustl@1.2.5
Format
ebustl
Destination
BBC
Language
en-GB
Specification
reviewed
Interoperability
unverified
Last checked
2026-09-30

Validation rules

RuleSeverityParametersApplies when
MAX_TELETEXT_CELLS_PER_ROW warning max=40 always
MAX_TTI_BLOCKS_PER_SUBTITLE info max=1 always
STL_HEADER_VALUES error fields=codePage diskFormatCode displayStandardCode characterCodeTable languageCode maxRows always
MAX_CHARACTERS_PER_LINE warning max=37 always
MAX_LINES warning max=2 always
ALLOWED_TEXT_COLORS error colors=#ffffff #ffff00 #00ffff #00ff00 always
REQUIRED_METADATA error fields=originalProgrammeTitle subtitleListReference publisher editorsName always
ALLOWED_CHARACTERS error characters=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 !)(,.?:-><&@#%+*=/£$¢¥©®¼½¾™'" always

Always checked

Whatever the profile's rules: how the file is read (file reading, FILE_FORMAT_MISMATCH, NO_SUBTITLES_READ), the timing of a delivery (NON_POSITIVE_DURATION, SUBTITLES_OUT_OF_ORDER, SUBTITLE_OVERLAP) and the language of the subtitles (SOURCE_LANGUAGE_MISMATCH).

Sources

  1. BBC

    official

    BBC Subtitle Guidelines, 1.2.5 (March 2026)

    Retrieved 2026-09-30 Open source document

This is a CueNorm profile based on published specifications. It is not endorsed by BBC.

Resolved profile hash, recorded in every report and deliverable:

92e1bff531cbe60c30defd91beb4c5ba136d3b48dc3c9a3c4d138a6ef6c268d0