SonaFactEvidence from audio
SonaFactEvidence from audio

Convert timestamps: time, seconds, frames

Type a time from subtitles or a transcript, a timecode, or a number of seconds or frames. You get all the other forms at once.

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For example 00:01:02,500 · 1:02 · 00:01:02:12 · 62.5

Have the recording too? SonaFact turns it into a transcript with speakers and timestamps — 3 transcripts a day for free, up to 30 minutes each.

Transcribe a recording for free

How to do it

  1. Type or paste a time, a timecode or a number.
  2. Choose the frame rate of your video and, for a plain number, whether it means seconds, milliseconds or frames.
  3. Read the time in SRT and VTT form, in seconds, in frames and as a timecode.

Questions

Are my files uploaded anywhere?
Your text stays in your browser. Nothing is uploaded and you don't need an account.
What is drop-frame timecode?
At 29.97 and 59.94 fps there are slightly fewer frames per second than the timecode counts. Drop-frame timecode skips frame numbers 00 and 01 (00 to 03 at 59.94) at the start of every minute except every tenth, so it stays in step with the clock. It is written with a semicolon: 00:01:00;02.
Why do SRT and VTT times look different?
Only the separator before the milliseconds differs: SRT uses a comma (00:01:02,500) and WebVTT a dot (00:01:02.500).
How are frames rounded?
To the nearest whole frame. Rates such as 23.976 and 29.97 are counted exactly — 24000/1001 and 30000/1001 frames per second — not rounded.

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