Speaker IDs and Non-Speech in Captions
A style guide for speaker labels, bracketed sound, italics for off-screen speech, and music cues that auto-captions drop and d/Deaf viewers actually need.
8 min read
Captions run early after the first two minutes
Segment timestamps and 30-second window rounding accumulate. Use VAD-first segmentation, forced alignment, and a frame-rate check before you generate cues.
8 min read
Variable frame rate breaks caption timing
Phone footage and screen recordings often carry variable frame rate. Detect VFR, transcode to a constant rate, then caption so cues stop drifting.
9 min read
The Transcript as a Content Asset
Every talking-head video already contains its own transcript. What it's actually raw material for, and why the text file outlasts the burned-in caption.
7 min read
Transcription Language Coverage vs Dubbing Language Coverage
Transcription covers 165 language codes. Dubbing covers 25. Six TTS engines each cover a different subset. Here is the real coverage picture, snapshot dated.
7 min read
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