Drop the lecture recording or paste its link, correct your subject's terms on the transcript, and download an SRT or VTT to attach in your lecture-capture system or LMS. A three-hour seminar goes in as one file.
How it works
Download the lecture from your lecture-capture system or Zoom, or take the file from the classroom recorder. The audio alone gives the same captions and uploads faster.
Technical vocabulary, the names of researchers and formulas read aloud are where errors cluster. Correct them on the transcript; the caption file carries the change.
Download .srt or .vtt and upload it in the caption settings of the recording in your lecture-capture system, LMS or video host.
A lecture is not a course video
A produced online course is short lessons recorded at a desk with a good microphone; that case is on subtitles for online courses. A lecture recording is an hour or more in a room, with the lecturer moving away from the microphone and students asking questions from their seats.
Where the caption file goes
For a course folder in Google Drive, import the folder from the Library and export it back to Drive with a TXT and an SRT for every finished lecture: lecture recordings from Google Drive. For notes and chapters from the same class, see transcribe a lecture and the education use case.
Accessibility
Public colleges and universities in the United States are state or local government bodies, so the Title II web rule applies to them: WCAG 2.1 Level AA, captions on recorded video included, by a date set by population. The dates and sources are on captions for ADA compliance.
The standard means captions a person has checked. An unreviewed automatic track from any tool is a first draft. Reviewed captions serve students who are deaf or hard of hearing first, and also students revising before an exam, studying in their second language, or watching in a library without headphones.
Before you rely on it
Each cue holds at most two lines of about 42 characters and stays on screen for one to seven seconds, breaking at the end of a sentence or clause where it can. The words are exactly the transcript's; only the breaks are chosen for the screen.
Cue times are taken from the recording itself, so the file lines up with the video or audio you uploaded. If you trim the start of the video afterwards, shift the cues by the same amount in your editor.
On public test recordings, about 7 words in 100 differed from the reference for clean English read speech, between 4 and 9 in 100 for Spanish, Portuguese, Russian, French and German, and about 21 in 100 for Hindi. Noisy rooms, music and crosstalk do worse. Method and every number: the benchmark.
Open the transcript, correct a misheard name or number on its line, and the SRT and VTT you download carry the correction with the timing unchanged.
You get the subtitle file. Fonts, colours, position and captions drawn into the picture are done in your video editor or player, which reads this file.
Up to 10 hours or 5 GB per recording. The box on this page takes files up to 500 MB; larger ones continue on the upload page. 99+ languages, detected automatically.
Pricing
The preview is free. When the full transcript needs a pack, one-time packs are $6 for 500 minutes, $8 for 1,000 minutes, $12 for 2,000 minutes, $24 for 5,000 minutes. Credits never expire, which comes to about $0.29 to $0.72 per hour of audio. A 13-week course with two 75-minute lectures a week is 1,950 minutes, which fits the $12 pack of 2,000 minutes.
| Recording | $6 or $8 pack | $12 pack | $24 pack |
|---|---|---|---|
| One 75-minute lecture | $0.60 | $0.45 | $0.36 |
| A 3-hour seminar | $1.44 | $1.08 | $0.86 |
| 13 weeks of two 75-minute lectures | $15.60 | $11.70 | $9.36 |
Figures are the share of a pack each recording uses. A button opens secure checkout for that pack. Every export format is included; full details on the pricing page.
FAQ
Upload the recording or its audio here, correct the transcript, download SRT or VTT, then upload the file in the caption settings of the recording in your lecture-capture system, LMS or video host.
Canvas takes SRT or WebVTT caption files for uploaded video, one file per language. Both download from the same transcript here.
Only as well as the microphone heard them. Questions asked from the seats are often faint on a lectern or ceiling microphone and can come back incomplete. Repeating each question before answering it fixes that.
Use whichever needs fewer corrections. Built-in captions are not switched on everywhere and do not cover recordings made outside the system, and on a lecture full of specialist terms it is worth comparing one class both ways.
Yes, in the language spoken: 99+ languages are detected automatically. The captions are in that language; they are not translated.
Usage is per minute of audio. Two 75-minute lectures a week for 13 weeks is 1,950 minutes, which fits the $12 pack of 2,000 minutes; credits never expire.
Every page in this set uses the same upload box and the same export. All subtitle pages
Free preview. SRT and VTT per class; packs from $6, credits never expire.