AI app for marketing · no coding needed
Styled caption and subtitle production studio
Produce styled, on-brand captions and subtitles for many videos in one owned workflow.
Made for: Social media teams and video editors producing short-form video at volume
What it does for you
The problem
Caption styling, transcription, resizing and posting are split across several rented tools, so each video passes through repeated manual steps and inconsistent branding.
What it gives you
Reviewed, platform-ready captioned videos with descriptions and hashtags
What you give it
Raw videoaudiobrand style rulesplatform specs
Build your own version of FastCut, Vsub and more
One app with what these 8 AI tools do, yours to keep and change: FastCut, Vsub, Submagic, Viroll, ByteCap, Wrpup, VEED Captions App, CapUp.
Everything these tools do, in one app
- Automatic caption generation Automatically creates captions from video audio, saving time on manual transcription.Found in FastCut, Vsub, Submagic and 5 more
- High accuracy Generates captions with high accuracy, such as 98.5% or 99%.Found in Vsub, Viroll, ByteCap
- Emoji integration Adds relevant or animated emojis to captions to increase engagement.Found in FastCut, Vsub, Submagic and 3 more
- Keyword highlighting Automatically emphasizes important words in captions to draw viewer attention.Found in Vsub, Submagic, Viroll and 1 more
- Trendy templates Provides a variety of stylish templates to match different video aesthetics.Found in Vsub, Submagic, Viroll and 1 more
- Multi-language support Generates captions in multiple languages to reach a wider audience.Found in Submagic, ByteCap, Wrpup and 1 more
- Caption customization Allows personalization of captions with fonts, colors, effects, and other styling options.Found in ByteCap, CapUp
- Auto descriptions and hashtags Automatically generates video descriptions and relevant hashtags for social media posts.Found in Submagic
- Video recording Records videos directly within the app, such as in 4K resolution.Found in VEED Captions App
- Caption animations Adds animated effects to captions to boost viewer engagement.Found in VEED Captions App
- Audio editing tools Provides tools to record and edit clear audio to enhance sound quality.Found in VEED Captions App
- Bulk caption generation Generates multiple captions at once for efficient content planning.Found in CapUp
- Social media integrations Connects with popular social media management tools for streamlined posting.Found in CapUp
- Caption style inspiration Offers caption styles inspired by popular content creators.Found in FastCut
- Faceless video creation Automates the creation of videos without showing a person on camera.Found in Viroll
- AI video creation Generates videos using AI, including dynamic images and motion images.Found in ByteCap
- AI audio generation Creates lifelike AI-generated audio for videos.Found in ByteCap
- Cover image generation Instantly generates AI-powered cover images for videos.Found in ByteCap
- Multi-format caption download Allows downloading captions in various file formats like .SRT, .VTT, .ASS, and .TXT.Found in ByteCap
- Video resizing Quickly resizes videos to fit different social media platforms.Found in ByteCap
- Intelligent highlight extraction Automatically extracts key moments from long videos to create short highlights.Found in Wrpup
- Visual enhancements Adds professional B-rolls footage and dynamic transitions to maintain viewer attention.Found in Wrpup
How it works, step by step
- Transcribe video audio into timed captions
- Apply saved brand style rules to captions
- Add emojis and keyword highlights to captions
- Offer caption templates and creator-style presets
- Generate captions in multiple languages
- Customize fonts, colors and caption effects
- Animate captions and transitions
- Generate descriptions and hashtags per platform
- Extract highlight clips from long videos
- Resize videos for each social platform
- Generate cover images for videos
- Record or edit audio before captioning
- Generate AI voiceover and faceless video segments
- Export captions as SRT, VTT, ASS and TXT
- Batch-generate captions for a video queue
- Compare the reviewed result with the recorded baseline and value assumptions
- Capture corrections and named-owner approval before publishing
- Export a versioned set of reviewed, platform-ready captioned videos with source references and unresolved questions
Build it yourself with your AI system
Build this app yourself, no coding needed
Start with a quick version you can try in a few minutes. Like it? Then build the full app by copying and pasting our step-by-step instructions: everything is prepared for you.
Sign in to see how to build it yourself
Build a quick version to try, or get the full app pack for Styled caption and subtitle production studio with the step-by-step building instructions. You don't need any technical skills: you copy, paste and answer a few questions. Both are included in the membership.
4 Have it built for you days to a few weeks
Rather not do it yourself, or want it fully tailored to your data, your way of working and your brand? Nexibeo builds Styled caption and subtitle production studio with you.
What's in the app pack
Included in the Complete AI Training membership.
- The building instructions your AI follows, step by step
- The questions your AI will ask you about your business before it starts
- A clickable demo you can open in your browser, to see how it should work
- A detailed blueprint of the screens, the information it keeps and the checks it runs
Become a member to get the app packAlready a member? Sign in
The files, for the technically curious
- START-HERE.mdHow to build it with your own AI (read first)3 KB
- README.mdOverview and links4 KB
- questions.mdQuestions to answer before you build2 KB
- prompt-cloudflare.mdThe full build prompt, hosted on Cloudflare26 KB
- prompt-vps.mdThe same build on your own server (Docker)26 KB
- spec.jsonData model, API, AI pipeline, acceptance criteria12 KB
- demo/index.htmlThe working demo on sample data193 KB
Questions
Do I need to know how to code?
No. You copy and paste the prompts on this page into ChatGPT or Claude, and the AI does the building. When it asks you something, you answer in your own words.
What does it cost?
The quick version, the app pack and the step-by-step instructions are for members: you pay the membership price, not a price per app (see the plans). Building the full app uses your own ChatGPT or Claude subscription. Putting it online is often cheap or no cost at the start, and your AI tells you before anything costs money.
How long does it take?
The quick version: about two minutes. The real app: an afternoon for a first version you can use, longer if you want every feature.
Can I change it to fit my business?
Yes. Tell your AI what to change in plain words, like “add a column for the price” or “use our logo and colours”. Or have Nexibeo build and customise it for you.
More detailsHow the AI works, safeguards and what to build first
Produce styled, on-brand captions and subtitles for many videos in one owned workflow. For social media teams and video editors producing short-form video at volume, convert raw video, audio, brand style rules and platform specs into reviewed, platform-ready captioned videos with descriptions and hashtags. The benefit is a testable hypothesis, measured through approved captioned videos per editor hour and corrections after publishing; do not assume that AI output alone produces business value.
Confirm the buyer's problem and scope, collect raw video, audio, brand style rules and platform specs, then follow this sequence: 1. Transcribe video audio into timed captions. 2. Apply saved brand style rules to captions. 3. Add emojis and keyword highlights to captions. 4. Offer caption templates and creator-style presets. 5. Generate captions in multiple languages. 6. Customize fonts, colors and caption effects. 7. Animate captions and transitions. 8. Generate descriptions and hashtags per platform. 9. Extract highlight clips from long videos. 10. Resize videos for each social platform. 11. Generate cover images for videos. 12. Record or edit audio before captioning. 13. Generate AI voiceover and faceless video segments. 14. Export captions as SRT, VTT, ASS and TXT. 15. Batch-generate captions for a video queue. Resolve uncertain cases with qualified reviewers, approve reviewed, platform-ready captioned videos, and measure approved captioned videos per editor hour and corrections after publishing against a documented baseline.
How the AI works
Use AI to interpret permitted inputs, suggest structured mappings and generate candidate outputs for the stated task modules. Use deterministic code for timing arithmetic, schema validation, hard constraints and reproducible tests. Review source-linked explanations and uncertainty before accepting results. One approved caption style set and platform spec list; final brand, legal and publishing checks remain editorial. A model suggestion is never a verified fact, professional decision or authorization to act.
Safeguards
Preserve brand voice, source attribution, caption accuracy and usage permissions. Brand owners approve substantive changes and publishing scope. One approved caption style set and platform spec list; final brand, legal and publishing checks remain editorial. Keep all consequential actions under authorized human control and do not fabricate missing inputs, permissions, professional judgments or market evidence.
What to build first
Pilot scope: One approved caption style set and platform spec list; final brand, legal and publishing checks remain editorial. Implement one approved input format, a bounded representative case set and the first two task modules: transcribe video audio into timed captions; apply saved brand style rules to captions. Support the remaining modules with operator review: add emojis and keyword highlights to captions; offer caption templates and creator-style presets; generate captions in multiple languages; customize fonts, colors and caption effects; animate captions and transitions; generate descriptions and hashtags per platform; extract highlight clips from long videos; resize videos for each social platform; generate cover images for videos; record or edit audio before captioning; generate AI voiceover and faceless video segments; export captions as SRT, VTT, ASS and TXT; batch-generate captions for a video queue. Include source references, corrections, basic organization access, approval states, export and value measurement. Use managed operator assistance for unresolved exceptions. The cost estimate covers this narrow prototype, not unrestricted multi-tenant scale, complex production integrations, specialist certification or physical operations.
What it can connect to
Client-owned video libraries, authorized audio and permitted brand assets. Cloud asset storage, video editing import/export and social publishing destinations. Start with file exchange and validate destination specifications before promising direct publishing. Start with authorized file exchange. Validate current provider access, usage rights and schema behavior before promising a connector.
The screens in detail
Primary screens: Brand and style setup, Caption editing and preview, Batch queue and delivery. Use a thumbnail gallery for video projects, a large central preview player with caption overlay, and a right-hand panel for style, language, platform specs and comments. Let users compare caption versions side by side. Display draft, changes requested and approved states. Provide a client preview link with comments anchored to the relevant caption or timecode. Make the task-specific outcome reviewed, platform-ready captioned videos visible beside its evidence, review state and value baseline.
