Captions and Transcripts for Course Videos

Two related but different things

Captions are text shown on screen in time with the video, usually at the bottom. A transcript is the full text of what is said, presented separately, often on the page below the video or as a downloadable document. They draw on the same words, but they serve slightly different purposes.

Captions help while someone is watching. A transcript helps when someone wants to skim, search, copy a passage, or read instead of watching at all. Offering both is a small amount of extra work for a large gain in usefulness.

Who benefits

The most obvious group is learners who are deaf or hard of hearing, for whom captions may be the only way to follow a lesson. But the benefit is much wider than that. People commonly use captions because:

• They are in a noisy place, or in a quiet one where sound is not an option.
• The speaker has an accent or speaks quickly, or the learner is working in a second language.
• The subject has unfamiliar terms, and seeing them spelled out makes them easier to learn.
• They simply understand written text better than speech, or want to read at their own speed.
• Their audio equipment is poor or their connection is unreliable.

Because of this, captions are better thought of as part of ordinary good design, not as a special feature for a small group. The same reasoning appears in the broader subject of web accessibility, where changes made for some users end up helping nearly everyone.

What good captions include

A caption file is only helpful if it is accurate and easy to read. Things to aim for:

• Accurate words. Automatically generated captions are a useful starting draft, but they often get names, technical terms and homophones wrong. Read through and correct them before publishing.
• Sensible timing. Each line should appear when the words are spoken and stay long enough to read comfortably.
• Short lines. One or two lines at a time, broken at natural pauses rather than in the middle of a phrase.
• Speaker labels when more than one person talks and it is not obvious who is speaking.
• Meaningful sounds. If a sound matters to the lesson, such as an alert tone or a bell, a short note in brackets lets a learner who cannot hear it know it happened.
• Consistent spelling of terms, names and abbreviations throughout the course.

Punctuation helps too. Without it, captions become a stream of words that is tiring to read.

What a good transcript adds

A transcript can go beyond the spoken words. If a lesson involves a screen demonstration, a diagram or a chart, a brief description in square brackets of what is being shown lets someone who cannot see the screen follow along. For example, “[The chart shows two lines, one rising and one flat.]” tells the reader what the visual contributes.

Transcripts are also easy to search. A learner who half-remembers a term can scan for it much faster than scrubbing through a video. If you are thinking about learning analytics later, a transcript can also show where a lesson is long or repetitive.

Some creators lightly tidy a transcript, removing repeated filler words, as long as the meaning is unchanged. Captions, by contrast, usually stay close to what was said.

Producing them without a large budget

You do not need a complicated process. A workable approach is:

1. Write a script or outline before recording. A script makes both recording and captioning easier, since the words already exist as text. (Good habits for recording clear lesson videos help here.)
2. Generate a draft caption file with any automatic speech tool, or type your script into a caption format.
3. Proofread it while watching the video, fixing errors and timing.
4. Check that the captions do not cover important parts of the screen, such as labels or code.
5. Save the final text as a transcript as well.

Be careful about privacy and rights if you use a third-party service to process recordings, especially when learners speak on them. Read how the service handles your files before uploading. Questions like these connect to wider personal data good practice.

Common mistakes

• Publishing automatic captions without reading them.
• Using captions that flash by too quickly to read.
• Forgetting to update captions when the video is re-recorded or edited.
• Leaving out the transcript for audio-only lessons.
• Writing captions that paraphrase heavily, so the text no longer matches what is said.

Treat it as part of the lesson

Captions and transcripts are easiest when planned from the beginning rather than added at the end of a project. Build time for them into your production schedule, and revisit them whenever you update a lesson. Learners will rarely praise good captions, but they are quick to notice their absence.