How to style video captions for readable Reels

Well-designed captions help viewers read speech while following the picture. Tiny lettering, long lines and constant flashes have the opposite effect. Check the text first, then choose a style that suits the recording’s pace and supports its meaning.

1. Check the text before choosing an animation

Upload a talking video and wait for speech processing. Check the transcript in the editor, especially names, numbers, titles and technical terms. Click a word to jump to that moment. Use the original recording to correct errors rather than guessing: an effect will not fix a misrecognized phrase.

If you already have an SRT file, you can import it. In the clip editor, imported subtitle timestamps refer to the original recording. After editing, check that the text still matches the speech, especially around cuts.

Guide to SRT files and timestamps

2. Try six caption styles

In the open catalogue on the right, select Captions and click a card. The style appears immediately on the current video in the center of the screen. On a phone, the catalogue sits below the player. You can compare styles and undo changes without running the AI editor again.

• Editorial — understated styling for explanations and interviews.
• Marker — clear word highlighting when you need a noticeable emphasis.
• One word — brief, sequential accents; check whether your speech is comfortable to read at that pace.
• Outline — a style to compare for readability over light and dark areas of the frame.
• Reading line — styling for a complete phrase when viewers need to follow the whole idea.
• Classic — restrained styling for a story that does not need constantly changing accents.

Thumbnails demonstrate the animation, but make your final choice on your own video. Watch a complete sentence and a cut between scenes. For fast speech, an effect you like in a short example may feel too busy.

See all styles in the effects catalogue

3. Adjust the size and color for your footage

Caption size and color are adjusted in the same panel. Start with a size you can read on a phone without zooming. Check the longest word and sentence: line breaks should not cover a face or an important action. Avoid filling the entire vertical frame with text.

Check contrast across different scenes, not just the opening frame. Light clothing, a window or changing light may make your chosen color hard to see. Compare styles at those moments and choose one that stays readable throughout the video.

4. Check captions before exporting

• Watch the video muted: is the meaning still clear?
• Turn on the sound: do the words match the speech?
• Check names, numbers, negatives and sentence endings.
• Make sure the text does not cover faces or important details.
• Open the finished MP4 on your phone and check the beginning, cuts and ending.

If a clip contains sped-up or slowed-down speech, some caption effects may be unavailable. The catalogue explains this limitation. Cards and transitions are separate groups; they do not replace caption text. A transition needs a cut between scenes, and a card style changes an existing graphic insert.

5. Download an MP4 or a separate SRT file

In an exported MP4, the styling becomes part of the image, so it appears during normal playback. SRT stores text and timestamps, but not colors, fonts or animation. A downloaded SRT file will therefore not look like the styled preview until you set its appearance in another player or editor.

Trying a style, correcting text and exporting an existing clip again do not require another AI editing run. A new automatic edit is charged separately. For the complete process from footage to finished video, read the guide to making Reels with AI.

How to make a Reel from your videos