The Subtitling & Dubbing Standards Cheat Sheet
SDH, closed captions, EBU-TT, and the ADA/FCC rules that decide whether a delivery gets accepted or rejected — one reference, no jargon.
Written for Content Ops leads, QA managers, and anyone who has ever had a subtitle file bounce back from delivery review. The short version: six specs quietly decide whether a file passes QC — line length, reading speed, file format, and three overlapping compliance regimes. This sheet puts every one of them on a single page.
Echo9 is broadcast-quality AI dubbing.
Free PDF — delivered straight to your inbox
What's Inside
The Formatting Numbers That Matter
Line length, reading speed, and timing — the numbers streamers actually enforce.
SDH vs. Closed Captions
Same audio, different rulebook.
The File Format Matrix
EBU-TT, IMSC, SRT, VTT, SCC, TTML, and when to use each.
ADA, FCC, and EAA
The three regimes that get enforced, not filed away.
The Pre-Delivery QC Checklist
18 checkpoints, plus the most common rejection reasons.
A generic, industry-wide compliance reference — not a pitch for anything proprietary. Keep it next to your delivery spec and use it to brief new QA hires in five minutes instead of a week.
Related: QA Engine Checklist, Subbing
Every compliance spec that gets a delivery rejected, on one page.
Enter your email and we'll send the full PDF straight away.
We'll never share your email. Unsubscribe anytime.