ReelMafia guide
How to Add Captions to YouTube Shorts
Good captions are accurate, readable on a phone, and synchronized with speech—not merely present on the screen.
Updated
Start with an accurate transcript
Automatic speech recognition can create a first transcript, but names, acronyms, technical terms, and overlapping speech deserve a manual check. Replay the video while reading the captions and correct anything that changes the meaning.
Keep the wording faithful to the speaker. Do not silently rewrite a quote into a stronger claim just to make a subtitle more compelling.
Make the captions easy to read
Short lines are easier to scan than a dense block of text. Break captions at natural phrases and keep each screen to a manageable amount of text. Use enough contrast against the footage, and keep important words away from edges and platform controls.
Animated or highlighted styles can draw attention, but motion should not make reading harder. Check the clip at its actual playback size rather than judging it only on a desktop editing screen.
- Review spelling, speaker names, and punctuation.
- Check synchronization at normal playback speed.
- Confirm that captions stay within safe margins.
- Watch once with sound off to test readability.
Review the final export
After exporting, watch the complete file. Rendering can expose timing, crop, or text-placement issues that were easy to miss while editing. If a caption style is changed or another language is used, review that version as carefully as the original.
ReelMafia's described feature set includes automatic and restylable captions for short clips. Its AI caption generator and AI Shorts Generator pages explain the related product workflows.