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Guides
What Is a VTT File? The WebVTT Format, an Example, and What Browsers Actually Show
A VTT (WebVTT) file is the subtitle format of web video. The exact format, a real example, and what Chrome and Safari did with 17 features and 18 broken files.
Guides
Subtitles Out of Sync? The 4 Causes and How to Fix Each One
Out-of-sync subtitles are an offset, a frame-rate drift, a cut, or bad line timing. How to tell which in two minutes, the fix for each, and what we measured in AI subtitles.
Guides
Can ChatGPT Transcribe Audio? We Retested After the October Update
Paid ChatGPT plans can now transcribe uploaded audio; the free plan still can't. We retested free ChatGPT and a transcription app on the same scored MP3.
Guides
Transcript Examples: Timestamps, Speaker Labels and Formatting, From a Real AI Transcript
Real transcript examples from one two-speaker recording, with raw AI output, speaker labels, timestamps, timecodes and a video transcript, plus what to fix.
Guides
What Is an SRT File? The Format, an Example, and the Mistakes That Break It
An SRT file is a plain-text subtitle file of numbered, timed cues. The exact format, a real example, and what we found feeding 16 broken SRTs to ffmpeg.
Guides
Subtitle Reading Speed (CPS): The Limits, and Why AI Subtitles Break Them
CPS limits from Netflix and the BBC, how to convert words per minute to CPS, and a test showing most too-fast AI subtitles are a timing problem, not text.