How to Add Captions in Descript

You film a great video. The hook is sharp. The content is solid. But you skip captions — and half your audience bounces in the first five seconds.

Here’s the reality: 85% of Facebook videos are watched without sound, and viewers who watch with captions are 80% more likely to finish the entire video. If your content doesn’t work on mute, it doesn’t work.

Descript makes adding captions one of the fastest, cleanest processes in any video editor — and this guide will show you exactly how to do it.

Why Captions Matter More Than You Think

Before diving into the how, let’s talk about the why — because the numbers are hard to ignore.

50% of people watch short-form videos without sound. That means if there’s no text on screen, you’re losing half your potential audience before they even give you a chance. Captions don’t just help people who can’t hear audio. They help anyone watching in a quiet office, a noisy subway, or with their phone face-up on a desk.

The data backs this up:

• Videos with captions receive 40% more views than those without
• Captions improve viewer comprehension by 52%
• Adding subtitles increases average watch time on Facebook by 12%
• 66% of viewers prefer watching video content with subtitles even when they can hear

Beyond accessibility, captions drive engagement. When text reinforces your spoken words, viewers process information faster, stay longer, and retain more. That’s not a nice-to-have. That’s the difference between content that converts and content that gets scrolled past.

What Is Descript and Why Use It for Captions?

Descript is an AI-powered video and podcast editor that transcribes your audio automatically and lets you edit video by editing text — like a document.

Its caption workflow is built directly into this transcription engine. That means instead of manually timing subtitles frame by frame, Descript reads your audio, creates a time-synced transcript, and converts it into styled captions in minutes.

For anyone creating videos at scale — social content, YouTube, product walkthroughs, course material — this saves hours per video.

How to Add Captions in Descript: Step by Step

Upload or Record Your Video

Open Descript and either start a new project or open an existing one.

• To upload: Click New Project → Import File → select your video or audio file
• To record: Click the record button in the top toolbar and capture directly inside Descript

Once your file is in the timeline, Descript will automatically begin transcribing the audio. For most videos, this takes one to three minutes depending on length.

Review and Clean Up the Transcript

Before turning your transcript into captions, spend a few minutes reviewing it. Descript’s AI transcription is highly accurate — typically 95%+ accuracy for clear audio — but proper nouns, brand names, and technical terms may need a quick fix.

Click on any word in the transcript panel on the left side to jump directly to that point in the timeline. Edit misspelled or incorrect words directly in the text — Descript will update the timing automatically.

Pro tip: Remove filler words (“um,” “uh,” “like”) in bulk. Go to Actions → Remove Filler Words and Descript will flag them across the entire transcript so you can delete them in one pass.

Add Captions to Your Video

Once your transcript is clean, here’s how to generate captions:

Step 1: Click on your video clip in the timeline to select it.

Step 2: In the top menu, go to Publish or navigate to the Captions panel. (In some Descript versions, this is under Edit → Captions.)

Step 3: Select Add Captions. Descript will automatically generate caption blocks based on your transcript — timing each line to match the audio perfectly.

Step 4: A captions layer will appear on your timeline, displayed as styled text overlaying your video in the preview window.

That’s it. Your captions are now live on the video.

Customize Caption Style and Appearance

Generic white subtitles blend into backgrounds and get ignored. Custom-styled captions that match your brand are more readable, more memorable, and look significantly more professional.

In the captions panel, you can adjust:

Font: Choose from Descript’s built-in font options or use a custom font. Bold, rounded fonts like Montserrat or Proxima Nova read well at caption size.

Font size: Standard caption size is 48–56pt for short-form video. For longer-form content, 36–44pt works well without overwhelming the frame.

Color: White with a dark drop shadow or outline works across almost every background. Yellow with a red or dark shadow (as referenced in high-performing viral video styles) creates high contrast and stands out.

Position: Drag caption blocks to sit at the bottom third, center, or wherever best suits your visual composition. Avoid placing captions over faces or key on-screen graphics.

Background highlight: Enabling a semi-transparent background box behind caption text dramatically improves readability on busy or bright footage.

Word-by-word highlighting: Descript supports karaoke-style highlighting where each word lights up as it’s spoken — a powerful retention tool for fast-moving content.

Edit Individual Caption Blocks

Sometimes the auto-generated caption breaks happen at awkward points mid-sentence. You can manually adjust:

• Split a caption: Click inside a word and press Return to create a new caption block
• Merge captions: Highlight two adjacent blocks and press Delete on the dividing line between them
• Adjust timing: Drag the edges of any caption block on the timeline left or right to fine-tune when it appears and disappears
• Edit text: Click any caption block directly to edit the displayed text without affecting the transcript

For social media content, aim for one to two lines maximum per caption block. Reading speed on mobile averages around 200–250 words per minute, so captions that flash too quickly or stack too many words at once will lose viewers.

Use Caption Templates (Recommended)

If you publish videos regularly, save yourself from restyling captions every time. Once you’ve set your caption style, save it as a template.

Go to the captions panel → click the Style dropdown → select Save Style as Template.

Name it something like “Social Captions v1” and it will be available for every future project. This is one of the most underused time-savers in Descript’s entire toolset.

Export Options for Captioned Videos

When you’re ready to publish, Descript gives you several export options depending on where your video is going.

Burned-in captions (hardcoded): The captions are permanently embedded into the video file. Best for platforms like Instagram, TikTok, LinkedIn, and YouTube Shorts where external subtitle files aren’t supported or displayed reliably.

To export with burned-in captions: Go to Publish → Export Video → check Include Captions → select Burned In.

SRT file (separate subtitle track): Exports a .srt file alongside your video. Upload this to YouTube, Vimeo, or any platform that supports external subtitle files. This lets viewers toggle captions on/off.

To export an SRT: Go to Publish → Export → Export Transcript as SRT.

VTT file: A web-compatible subtitle format used for embedding video on websites. Export follows the same process as SRT — select VTT from the transcript export menu.

For social video, always go burned-in. Research from Verizon Media found that 92% of mobile viewers watch video on mute at some point — relying on viewers to manually enable captions means most will never see them.

Advanced Caption Tips to Make Your Content Perform Better

Keep Lines Short and Punchy

Captions shouldn’t mirror your full spoken sentence. Break long thoughts into two-line maximum chunks. Each caption block should feel like a breath — quick, readable, gone before the viewer has time to skip.

Use Emphasis Words to Drive Retention

When you’re stressing a key point, bold or capitalize one word in the caption. Studies show that text emphasis increases reading comprehension by 29% and helps anchor viewer attention at the exact moment you want it.

Match Caption Timing to Your Pacing

Fast-talking presenters need tighter, shorter caption blocks. If you edit to a fast pacing rhythm — removing dead space, cutting breaths between sentences — make sure your captions keep up. Laggy captions that trail a second behind the spoken word break immersion.

Add Motion to Key Captions

Descript allows basic animation on caption text — fade in, pop, scale. For emphasis moments (a shocking stat, a big claim, a call to action), adding a subtle scale pop or fast fade creates the visual jolt that keeps eyes on the screen.

Use a Consistent Caption Style Across All Videos

Viewers who watch multiple pieces of your content will start to recognize your caption style as part of your brand identity. Consistency trains your audience to read faster and engage more deeply because the visual format becomes familiar.

Common Descript Caption Mistakes to Avoid

Not reviewing the transcript before generating captions. Errors in the transcript become errors on screen — visible to every viewer. Always do a quick pass before adding captions.

Using a font that’s too thin or too small. On mobile screens, captions under 36pt or using light-weight fonts are nearly unreadable. Bold, high-contrast text always wins.

Ignoring caption position on vertical video. For Reels, TikToks, and Shorts, the bottom 20% of the screen is often covered by the platform’s UI (like buttons, username, description). Captions placed too low will be hidden. Position them center or upper-center for vertical formats.

Exporting without checking the final render. Before publishing, always watch the exported video with sound off. If the captions work on mute, they work everywhere.

Skipping captions entirely for “professional” content. A common misconception is that captions feel informal or low-budget. In reality, viewers across all content categories expect captions — in fact, they make content feel more polished, not less.