# AI video guides

AI Video Gen has 8 guides on AI video generation tools: text-to-video, image-to-video, AI avatars and presenters, AI video editing and repurposing, short-form clip makers, AI animation, and AI dubbing and lip sync, grouped by country.

## General

- [AI avatars and presenter video — consent and practical limits](https://aivideogen.fyi/guides/ai-avatars-and-consent.md): AI avatar tools turn a script into a presenter video. They suit training, explainers and spokespeople, but likeness rights, consent checks and plan limits decide whether they fit your project.
- [Commercial use and copyright rules for AI video](https://aivideogen.fyi/guides/commercial-use-and-copyright-for-ai-video.md): Two separate questions decide whether you can publish AI video: what the tool's terms allow, and what copyright law says about AI-generated output. US Copyright Office guidance and vendor terms, checked 2026-11-13.
- [How to choose an AI video generator](https://aivideogen.fyi/guides/how-to-choose-an-ai-video-generator.md): Compare AI video tools on the six things that decide your result before you compare price: input type, clip length, resolution, watermark rules, commercial-use terms and total monthly cost.
- [How to write prompts that produce usable AI video](https://aivideogen.fyi/guides/how-to-write-video-prompts.md): A video prompt has four jobs — subject, action, camera and style. Write them in that order, keep one idea per clip and iterate on the weakest element instead of rewriting everything.
- [How to make a 30-second product ad with AI](https://aivideogen.fyi/guides/make-a-30-second-product-ad-with-ai.md): A repeatable workflow for a short product ad — script the beats, generate or animate the shots, then assemble, caption and check the rights before you publish.
- [Text-to-video vs image-to-video](https://aivideogen.fyi/guides/text-to-video-vs-image-to-video.md): Text-to-video builds a clip from a written prompt. Image-to-video animates a still you supply. The right choice depends on the material you have and how much control you need.
- [Watermarks and free plans compared](https://aivideogen.fyi/guides/watermarks-and-free-plans-compared.md): Every AI video tool gates something on its free plan — a watermark, a clip limit, no commercial license or one-time credits. What the free tiers of five major tools actually give you, checked 2026-11-13.
- [What AI video tools cost](https://aivideogen.fyi/guides/what-ai-video-tools-cost.md): AI video tools bill in four ways — free tiers, monthly subscriptions, credit systems and usage pricing. Real plan prices fetched from vendor pages on 2026-11-13, with the limits that change the real cost.