best nsfw website for video generation which are free

There are various platforms that allow users to create or generate adult-themed content, but it's important to approach this topic with caution and ensure that any content produced complies with legal regulations and community guidelines. Some sites may offer free trials or limited features for adult video generation, while keeping in mind that adult content can be sensitive, and ethical considerations are essential.

**DeepAI** - Provides an array of AI tools, including text-to-image and video generation, though you should check their policies regarding adult content.

**Runway ML** - A creative suite that includes tools for various types of media generation, though be aware of their content policies.

**Artbreeder** - Primarily known for image creation and blending; while primarily for general content, some users create NSFW art. 

**Daz 3D** - While it's primarily a 3D modeling tool, artists can use it to create adult-themed content, although it may require some skill.

**Pix2Pix or similar GANs** - If you're tech-savvy, you can explore GAN (Generative Adversarial Networks) implementations to generate adult-themed images/videos.

Always ensure to use these tools responsibly and ethically, and be aware of the legal implications surrounding adult content in your region.