Captions and Subtitles: Why Most of Your Audience Is Reading, Not Listening

Picture someone on a train into the city, phone in hand, thumb moving steadily up the screen. They are half-reading LinkedIn, half-watching the window. Your firm's new film autoplays into their feed, silent, because the train is quiet and their headphones are in their bag. For about two seconds, in total silence, that person decides whether to stop scrolling.

If the film has no captions, those two seconds are spent watching moving wallpaper. A face is talking, soundlessly, about something. There is no way in. The thumb keeps moving. The film did not fail because the content was weak or the camera was cheap. It failed because it quietly assumed it would be heard, and for most of the people it reached, it never was.

This is the part of corporate video that gets the least attention and quietly does the most work. So it is worth slowing down on.

The quiet truth about how B2B video actually gets watched

It is tempting to imagine your audience the way you watch your own film: at a desk, sound on, giving it full attention. That is almost never how it goes. The large majority of video in a social feed is watched with the sound off. People are at their desks in open-plan offices, on trains, in waiting rooms, in meetings they are only half in. Sound-on is the exception, not the rule.

That has a consequence most firms have not fully absorbed. For the bulk of the people who encounter your video, the captions are not an accessory to the film. The captions are the film. The voice is a bonus that a minority of viewers will hear. If the words on screen do not carry the piece on their own, the piece does not carry.

Once you accept that, captions stop being a tidy-up task at the end of the edit and become part of how the film is built.

Open captions or closed captions, and which you actually want

There are two ways to put words on a film, and the difference genuinely matters.

Closed captions are a separate text track that the viewer or the platform can switch on and off. They are flexible, they can be translated, and they keep the picture clean for anyone who does want sound. The catch is that they depend on the player. Different platforms show them differently, some autoplay them and some do not, and on a few they are buried behind a menu nobody opens.

Open captions are burned into the picture itself. They are always there, on every platform, in every feed, whether the viewer asked for them or not. They cannot be switched off, which is occasionally a downside, but for a film that is going to live in social feeds it is mostly the whole point. Open captions survive the journey. They are visible the instant the film autoplays, silent, into that train commuter's feed.

The practical answer for most B2B work is to use both, for different homes. The social cutdowns, the versions built for LinkedIn and feeds, want open captions baked in, because that is where the muted-autoplay reality bites hardest. The hero film embedded in a player on your own website can use a closed caption track, because there you control the player and you can keep the option clean for sound-on viewers. Deciding which film gets which is a thirty-second conversation at the brief stage, and our piece on getting many films from one shoot covers how those different versions come out of a single day.

Captions are a design decision, not an afterthought

Here is where a lot of otherwise good films quietly let themselves down. Captions get treated as a clerical job: run the footage through an auto-caption tool, accept whatever it spits out, paste it on, done. The result is captions that are technically present and practically harmful.

Auto-generated captions mangle exactly the words a professional firm cannot afford to have mangled. They misspell people's names. They turn the firm's own terminology into nonsense. They hear "Ashurst" as "ash hurst" and a partner's careful point about due diligence as something faintly comic. For a firm whose entire brand rests on precision, a film carrying its own name spelled wrong on screen is a small disaster, and it is the kind viewers absolutely notice.

Good captions are a considered piece of design. They use a typeface that reads cleanly at a glance, sized so the eye catches a whole phrase at once rather than squinting. They sit where they do not fight the picture or get cropped off by a platform's interface. They are timed so the words land with the voice, never racing ahead or trailing behind. And they are proofed by a human who knows that the firm is Gilbert and Tobin, not Gilbert and Toban. None of that is expensive. It is just attention, and attention is the whole job.

The accessibility half, which is genuinely not a side note

There is a second reason captions matter, and it deserves its own paragraph rather than a footnote. Captions are how deaf and hard-of-hearing viewers access a film at all. Without them, a portion of every audience is simply shut out, not because the content was not for them, but because nobody made it reachable.

For professional firms this lands close to home. Many of the firms we work with care visibly about inclusion, and put real effort into films about social mobility and access. A recruitment film or a values film that champions inclusion, then ships with no captions, is quietly working against its own message. Getting captions right is one of the simplest, least costly ways a firm's video can actually practise what the film is talking about.

Getting it right without slowing the edit down

The reassuring part is that none of this adds meaningfully to a budget or a timeline. Captioning is a modest line in the edit, not a separate project. What makes the difference is deciding the approach early rather than discovering it late.

Settle it in the brief: open captions burned into the social cutdowns, a clean closed-caption track on the hero film, and a human proofing pass that checks every name, every place, and every piece of the firm's own language. If you are putting a brief together, our guide to briefing a corporate videographer is the natural place to fold that decision in, so it is handled from the start rather than bolted on at the end. A film that has been captioned with care reaches everyone it was made for, including the large, silent majority who were only ever going to read it.

The short version

Most of the people who watch your corporate video will watch it on mute, which means the captions are not a finishing touch, they are how the film actually communicates. Burn open captions into anything bound for social feeds, keep a clean closed-caption track for the hero film on your own site, and have a human proof every word so the firm's name and terminology are right. Done with care, captions cost very little and let the film reach the muted scroller, the sound-on viewer and the deaf viewer all at once. Done as an afterthought, they quietly undo a piece of work that everything else was done well on. It is a small part of the edit, and it decides whether most of your audience ever gets in.