Auto Caption

Burn synchronized, high-contrast subtitles into video clips with customizable typography and screen placement

Burn video subtitles

How Auto Caption works

Convert raw spoken video into captioned, platform-ready content in three quick adjustments.

Auto Caption workflow connecting a studio source video to the caption generator.

Upload source footage

Provide your video file under 400MB containing clear spoken dialogue and audible vocal audio.

Auto Caption configured with white Arial text, size 58, stroke width 4, centered at the bottom for 1.5 seconds.

Configure caption styling

Select font, text color, outline stroke width, alignment, and display refresh duration to match your visual branding.

Auto Caption result showing synchronized white subtitles over a studio waveform scene.

Export captioned video

Generate your finalized video with synchronized vector text burned directly into the output frames.

What Auto Caption is good at

Engineered for crisp typography, accurate speech synchronization, and versatile cross-platform styling.

Automated Speech Transcription

Extracts spoken speech from your video audio track and generates synchronized, frame-accurate subtitles without manual transcription timelines.

Customizable Typography and Strokes

Select from 32 distinct colors and 5 font families, complete with customizable stroke widths up to 10 pixels to prevent text from blending into bright or dynamic footage.

Precise Frame Alignment

Lock captions to nine distinct screen coordinates across horizontal and vertical axes to fit perfectly within mobile safe zones and avoid native interface overlays.

Adjustable Display Durations

Fine-tune caption display duration from 1.0 to 10.0 seconds to match the natural cadence of fast-paced shorts or long-form educational dialogue.

Made with Auto Caption

Explore captioned video compositions styled across diverse creative genres and aspect ratios.

Cinematic performance capture with high-contrast centered dialogue

Industrial design showcase with dynamic lower-third typography

Vertical creator recipe tutorial styled with bold punchy subtitles

Editorial lookbook interview framed with elegant serif captions

What people build with Auto Caption

Discover how creators, brands, and production pipelines automate video accessibility at scale.

Social Shorts and Reels

Burn bold, high-contrast captions into vertical reels and short-form videos so viewers immediately engage even when audio is muted.

Commercial Video Ads

Deliver polished, brand-aligned marketing videos with custom colorways and outline strokes that stay legible across diverse ad feeds.

Documentary and Narrative Storytelling

Pair mini-documentaries, masterclasses, and interviews with timeless serif typography and longer display intervals for relaxed reading.

Fashion Lookbooks and Interviews

Complement fashion films and lookbook interviews with minimalist typography that honors high-end art direction without visual clutter.

Programmatic Content Engines

Automate subtitle rendering for high-volume narration pipelines, explainer videos, and programmatic content engines without human intervention.

Auto Caption specs

Plans and credits

Inputs: Video
Output: video
Cost: 138 credits per run

Frequently Asked Questions

Auto Caption processes video files containing clear spoken audio with an upload file size limit of up to 400MB. For optimal transcription accuracy, ensure the vocal track is clean and mixed at least 10 to 15 dB louder than any background music or sound effects.

No, Auto Caption hardcodes burned-in vector subtitles directly into the output video frames. It produces a finished, rendered video file rather than sidecar caption formats like SRT or VTT.

You can choose between five distinct fonts (Standard, Arial, Garamond, Times New Roman, and Georgia), select from 32 text colors, scale font sizes from 1 to 148, and apply an outer stroke width from 1 to 10 pixels to maintain sharp legibility against busy backgrounds.

You can position subtitles across horizontal (left, center, right) and vertical (top, center, bottom) coordinates to fit platform-specific safe zones. Display durations can also be configured from 1 to 10 seconds to match either rapid-fire delivery or relaxed narrative pacing.

Auto Caption is billed as one flat amount per video run, so a long clip costs the same as a short one.