What an AI video generator does
An AI video generator creates video from a description instead of footage you shot. Some generators synthesise every frame with a video model; others assemble a video from AI-written scripts, AI images, AI voices and motion graphics. Each approach has its place.
ReelFrames focuses on what works for social media: fast, editable, on-brand short-form videos. It combines several kinds of AI — language models, image models, voice models and image-to-video models — and puts the result in a timeline editor so nothing is locked in.
Ways to generate video with the AI video generator
From a prompt
Type what the video is about and the AI writes the scenes, picks or generates images, narrates them and adds captions and music. This is ReelFrames' text to video mode, made in the Slideshow Maker.
From a product brief
Describe a product and the AI writes hooks, bodies and CTAs for UGC-style ads, with AI avatars presenting. See the UGC ad generator.
From your clips
Upload footage and the Bulk Video Maker generates every combination of your scenes.
From a description of a person
Generate realistic presenters and animate them into video with a motion prompt — see the AI talking avatar generator.
Combining modes in one AI video generator
An avatar can open a video, your clips can fill the middle, and AI-written captions can run throughout — all in one project and one render.
AI video generator example workflow
- Generate three AI avatars for your target customers
- Write hooks and CTAs from your product brief
- Add your product clips as the body
- Render every combination and post the best performers
Choose your AI video generator models
AI models improve every few months, and different models suit different styles. ReelFrames doesn't lock you into one.
- Text: any language model available through OpenRouter.
- Images: OpenRouter, OpenAI, fal.ai or Replicate models.
- Voice: OpenAI and ElevenLabs voices.
- Image to video: Replicate models such as Kling and Seedance for avatars.
Bring your own keys
Add your own provider keys in Settings → AI keys and requests run on your account, at the provider's price. You keep control of spending and get access to the models your account has.
Why an editable AI video generator matters
One-shot AI video is great for a demo and frustrating for real work: if one detail is wrong you regenerate the whole thing and hope. ReelFrames generates a project, not a flat file.
- Change one slide with an instruction, without touching the rest.
- Swap any image, line of text, voice or track by hand.
- Apply your brand kit's font, colours, logo and end card.
- Render as many times as you like — rendering never costs credits.
Posting what you generate
Generated videos land in your Library, ready to download or post to TikTok, Instagram Reels, YouTube Shorts, Facebook and LinkedIn. Set up a campaign and the AI video generator keeps producing and posting new videos on a schedule.
Choosing an AI video generator for your business
The right AI video generator depends on what you post, how often, and how much control you need. Before you choose, be clear about the job.
Questions to ask about any AI video generator
- Does it make the format I need — vertical short-form, ads, explainers?
- Can I edit the result, or only regenerate it?
- Can I choose or change the AI models?
- Does it handle captions, voice and music, or do I need other tools?
- Can it post to my platforms and run on a schedule?
- Do I keep ownership of what it makes?
Where ReelFrames fits best
ReelFrames is built for people and teams who publish short-form video often — creators, brands, agencies — and want a single tool from idea to posted, with the freedom to pick their AI models.
AI video generator cost control
Bring your own provider keys so AI requests are billed by the provider at their price, and remember rendering is free — re-render as often as you like while you polish.
AI video generator use cases
Content creators using the AI video generator
Faceless pages, educational channels and niche accounts generating a video a day. See the faceless video generator guide.
Brands and e-commerce
Product showcases, offers and UGC-style ads. See the product video creator.
Agencies
Many clients, each with its own brand kit, business profile, accounts and campaigns, with team members as editors or viewers.
Developers and automation fans
Queue prompts over the API, react to webhooks and let AI agents drive the app over MCP — see the video automation API.