One EBU-STL text block holds 112 bytes of text. That is a hard ceiling, and accented letters use two of those bytes. The format stores accents as floating characters, so the accent byte comes first and the letter second. An A with an umlaut is C8h 41h.
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Fixing a caption error after delivery costs far more than catching it before. Closed Caption Converter includes an Automatic QC filter that flags problems before broadcast.
Content QC and Technical QC switch on separately, and custom style guides let you reuse the same limits on every file. Try it free for 7 days at closedcaptionconverter.com.
A caption that covers a lower third or burned-in text breaks caption quality rules. Our new guide explains where a caption should sit and what survives export. Default to bottom center, inside the safe area.
Convert once from the most expressive format and keep that file as your master. Read the full guide from Closed Caption Creator at closedcaptioncreator.com/blo….
Drop frame does not drop frames. It is a labelling rule for 29.97 fps video that skips two timecode numbers at the start of most minutes. The picture stays the same. Without it, non-drop timecode runs about 3.6 seconds short after one real hour.
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Every caption spec wants speakers identified. They disagree on how. Netflix uses square brackets and keeps the label on the same line as the dialogue. The DCMP Captioning Key uses parentheses and gives the label its own line. UK practice writes the name in capitals with a colon.
No single file satisfies both Netflix and DCMP, so choose the spec for each deliverable. In Closed Caption Creator, the Insert Speaker Name tool sets the prefix and suffix character, uppercase, and inline placement. Read the full comparison at closedcaptioncreator.com/blo….
Introducing Closed Caption Creator IFE: closedcaptioncreator.com/int… you're building a video platform and need to support complex closed captioning, and subtitle workflows check out our embedded subtitle editor.