Automatically add captions to your video with AI.
Cubix transcribes the speech in your footage, syncs captions to the words, applies a readable style, and keeps the text, timing, and look editable before export.
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Source video
Cubix Auto Captions
- Transcribing speech
- Syncing words
- Building caption blocks
- Applying style
Captioned video
THE MISTAKE
MOST CREATORS MAKE
- Text editable
- Timing editable
- Style editable
What is an AI caption generator?
An AI caption generator uses speech recognition to turn spoken audio into synchronized on-screen text. Cubix generates captions across your footage, aligns them with the speech, organizes the text into readable caption blocks, and leaves the result editable before export.
Good captions are more than a transcript.
Getting the words right is only the first step. Captions also need timing, readable line breaks, and clear emphasis so they follow the speaker instead of feeling pasted over the video.
Speech
“The mistake most creators make…”
Transcript
THE MISTAKE MOST CREATORS MAKE
Word timing
THE·MISTAKE·MOST·CREATORS·MAKE
Readable caption
THEMISTAKE
MOSTCREATORSMAKE
What Cubix Auto Captions does
- 01
Transcribes spoken audio
Converts speech across your footage into editable caption text.
- 02
Syncs captions to speech
Aligns caption timing with the words being spoken.
- 03
Builds readable caption blocks
Groups the text so captions stay easy to follow on screen.
- 04
Highlights active words
Use word highlighting or karaoke-style emphasis when the selected caption treatment supports it.
- 05
Applies a caption style
Start with a clean caption treatment, then adjust how it looks.
- 06
Keeps captions editable
Correct words, adjust timing, change the styling, or download an SRT before export.
How to add captions to a video with AI
- 1
Add your video
Upload your footage or paste a supported video link, including YouTube.
- 2
Generate captions
Cubix transcribes the spoken audio and creates synchronized caption text across the footage.
- 3
Review and customize
Correct words, adjust timing and line breaks, and choose how the captions should look.
- 4
Export your video
Export the finished video with your captions burned in, or download the caption text as an SRT file.
Generate the captions. Then make them yours.
The AI handles transcription and timing. You can change the words, caption flow, highlighting, and caption look without starting over.
Style
The starting caption treatment.
Flow
How words appear on screen.
Highlight
How the active word is marked.
Where automatic captions fit
Podcasts & interviews
Turn spoken conversations into captioned video.
Tutorials & course videos
Make explanations easier to follow with synchronized text.
Product demos & screen recordings
Keep narration visible while viewers follow what is happening on screen.
Make spoken video easier to follow without sound
Captions make spoken content available visually, including for viewers who are deaf or hard of hearing or who cannot listen with sound. Accessibility requirements vary by context, so review the final captions and use the appropriate caption or subtitle format for where the video will be published.
AI generates the first pass. You review the words.
Automatic captions are a starting point, not a locked render. Review the text and change anything before you publish.
Cubix handles
- Speech transcription
- Word timing
- Caption block creation
- Initial caption styling
- Highlight timing
You control
- Names and technical terms
- Text corrections
- Line breaks
- Timing
- Highlight behavior
- Caption style
- Final export
AI caption generator FAQs
An AI caption generator uses speech recognition to transcribe spoken audio and turn it into synchronized text for a video. The generated captions can then be reviewed, styled, and edited before publishing.
Yes. Cubix can transcribe the speech in your footage and create synchronized, editable captions across the video.
Automatic captioning analyzes the spoken audio, converts the speech into text, and aligns that text with the corresponding moments in the video. You can then review the transcript, timing, and styling.
Yes. Generated captions remain editable, so you can correct words and adjust supported timing, styling, highlighting, and layout controls before export.
Cubix stores word-level timing so caption highlighting can follow the spoken words more closely. The generated timing can still be reviewed and adjusted before export.
Yes. Cubix supports caption treatments that can emphasize the active word as the speaker talks, including supported color and karaoke-style highlighting options.
Yes. You can adjust supported caption styling controls after generation. For deeper visual customization, presets, and caption treatments, see Cubix Caption Styles.
Yes. Cubix can export caption text in SRT format in addition to using captions directly in the video. You can also upload an SRT file if you already have one.
The terms are often used interchangeably online. Captions generally represent spoken dialogue and may also include relevant audio information, while subtitles often refer to text used to represent or translate dialogue. The exact terminology varies by platform.
Yes. Cubix captions can be used on creator videos and short-form edits prepared for platforms such as YouTube, Instagram Reels, YouTube Shorts, and TikTok.
Cubix can generate captions across longer footage as well as shorter clips, subject to the media and usage limits of your plan.
Auto Captions creates and synchronizes the caption text from your video’s speech. Caption Styles focuses on how those captions look, including their visual treatment and supported styling options.
Looking for fonts, presets, and caption treatments? Explore Caption Styles
Your video already has the words. Let Cubix caption them.
Generate synchronized captions, review the text, choose the look, and export when it feels right.
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