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FeaturedHow to Generate AI Videos with NVIDIA Cosmos in ComfyUI

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MimicPC
01/27/2025
ComfyUI
Discover how to create stunning AI videos using NVIDIA Cosmos ComfyUI text-to-video and image-to-video workflows for prompt-driven visuals now.

AI-generated video is rapidly becoming a mainstream trend in digital media, offering creators and businesses new avenues for dynamic storytelling and marketing. At the forefront of this innovation is the powerful NVIDIA Cosmos—a key player in the cosmos ai sphere—now featuring 7B and 14B diffusion model support for both text-to-video (T2V) and image-to-video (I2V) projects. Even better, ComfyUI has officially updated to integrate these new diffusion models, bringing streamlined video generation workflows to a wide audience. Additionally, MimicPC now provides ready-to-use NVIDIA Cosmos text-to-video and image-to-video workflow, enabling anyone to easily harness these advanced tools.

nvidia cosmos text to video workflow

Apply NVIDIA Cosmos Text2Video Workflow Now!

nvidia cosmos image to video workflow

Apply NVIDIA Cosmos Image2Video Workflow Now!


Understanding NVIDIA Cosmos

NVIDIA Cosmos stands as a developer-first platform tailor-made for building advanced Physical AI systems. It provides an extensive ecosystem of pre-trained diffusion and autoregressive models, all accessible under the NVIDIA Open Model License—allowing free commercial use.

Key Features

Pre-Trained Diffusion Models

  • Offers diffusion-based “world foundation models” (7B, 14B) for Text2World and Video2World generation.
  • Users can generate visual simulations based on text prompts or video prompts, opening up a range of AI-driven creative and research applications.

Pre-Trained Autoregressive Models

  • Includes autoregressive world foundation models (4B up to 13B parameters) for advanced Video2World generation.
  • These models can combine video prompts with optional text prompts to produce even more nuanced future visual worlds.

Video Tokenizers

  • Efficiently tokenizes videos into continuous (latent vectors) or discrete (integer) tokens.
  • Streamlines data handling for AI-based video processing and generation tasks.

Post-Training Scripts via NeMo Framework

  • Enables developers to further refine (post-train) the pre-trained diffusion or autoregressive models for specialized Physical AI setups.
  • Offers a straightforward path to customizing world foundation models for unique project requirements.

Pre-Training Scripts for Custom Models

  • Provides scripts (Diffusion, Autoregressive, Tokenizer) through the NeMo Framework to build entirely new world foundation models from scratch.
  • Ideal for teams needing domain-specific or proprietary AI solutions.

Open Model License for Commercial Use

  • NVIDIA Cosmos’ pre-trained models are distributed under an open license, allowing free commercial use.
  • Lowers barriers for startups, researchers, and enterprises aiming to deploy AI-driven visual generation in production environments.

These robust features make NVIDIA Cosmos a versatile and powerful platform for developers, researchers, and businesses looking to harness cutting-edge AI capabilities in video generation scenarios.


Why Choose NVIDIA Cosmos for AI Video Generation

When it comes to state-of-the-art AI video models, NVIDIA Cosmos stands out for its remarkable balance of performance, flexibility, and quality. Below are some key reasons why it’s becoming the go-to choice for developers, artists, and researchers looking to generate AI-based videos—particularly when integrated with ComfyUI for text-to-video and image-to-video workflows.

1. Top-Tier Model Options (7B and 14B)

NVIDIA Cosmos provides two primary diffusion-based model sizes—7B and 14B—that offer exceptional video generation quality.

  • 7B: Ideal for most users, especially those with GPUs around 24GB of VRAM. With ComfyUI’s automatic weight offloading, even 12GB GPUs can handle the 7B model.
  • 14B: Suited for high-end systems, delivering more detailed and nuanced results for advanced projects.

2. Superb Video Quality and Guaranteed Motion

Cosmos excels at producing coherent, dynamic sequences:

  • Built-in Movement: The model inherently introduces motion to the generated videos, ensuring lively outcomes even across extended sequences (e.g., 121 frames).
  • Image-to-Video with Prompt Control: By behaving similarly to an inpainting model, Cosmos supports prompts that guide each frame. You can generate from the first or last frame, or smoothly interpolate between two images.

3. Efficient Video VAE

One of the strong points of NVIDIA Cosmos is its highly memory-efficient VAE, which allows:

  • Larger Resolution Processing: Encode and decode up to 1280×704 resolution for 121 frames on a 12GB GPU—without complex tiling methods.
  • Quality Preservation: Despite its efficiency, Cosmos maintains high-quality outputs, making it suitable for both creative and commercial applications.

4. Negative Prompt Support

Non-distilled diffusion models like NVIDIA Cosmos respond well to negative prompts, offering better fine-grained control and easier training than some alternative models. This advantage is crucial for those who need to nudge the model away from unwanted visual artifacts or refine specific scene elements.

5. Seamless Integration with ComfyUI

  • New Sampler (res_multistep): This specialized sampler, originally used by NVIDIA in their Cosmos workflow, is now a part of ComfyUI and works with any supported model. It also shows promising results on other video models.
  • Automatic Weight Offloading: For users with less VRAM, ComfyUI’s offloading functionality makes it feasible to run large Cosmos models without constantly hitting memory limits.

6. Suited for Longer, Detailed Prompts

Cosmos typically needs more extensive prompt descriptions to fully realize intricate scenes—great news if you’re aiming for nuanced, story-driven sequences. This robust prompt sensitivity helps creators articulate precise outcomes, from subtle motion paths to complex visual themes.

By combining high-fidelity video generation with an efficient VAE and the flexibility to work on moderate GPU setups, NVIDIA Cosmos is quickly becoming a leading option for anyone looking to create next-level AI image-to-video content. Whether you’re developing cutting-edge advertisements, experimenting with new media formats, or just digging into Reddit best AI image-to-video threads, Cosmos delivers the quality and control today’s AI practitioners demand.


Step-by-Step Guide: Generating Video from a Text Prompt with NVIDIA Cosmos

1. Apply the MimicPC Ready-to-Use Workflow

Head to MimicPC’s NVIDIA Cosmos text2video Workflow and apply the available ComfyUI text-to-video workflow setup. This ready-to-use configuration streamlines the process, so you don’t have to manually install or integrate multiple tools. Please remember to choose large-pro and higher hardware for the workflow.

nvidia cosmos ai comfyui text to video workflow

2. Input Your Positive and Negative Prompts

  • Positive Prompt: Describe what you want to see in the video. For example: “An immersive travel video capturing the raw beauty of a misty mountain range at sunrise. The opening wide-angle shot reveals towering peaks emerging from low-lying clouds. As the camera glides forward, layers of pine forest gradually come into view, partially veiled by drifting fog. Soft orange and pink hues from the early sun illuminate the mountaintops, creating a gentle contrast against the cool blues of the valley below. Crisp wind gusts rustle through the pines, their swaying branches adding a dynamic element to the scene. The final shot transitions to a breathtaking aerial perspective, revealing a winding river that mirrors the morning light in its surface.
  • Negative Prompt: List any elements you want to exclude. For instance: “The video captures a series of frames showing ugly scenes, static with no motion, motion blur, over-saturation, shaky footage, low resolution, grainy texture, pixelated images, poorly lit areas, underexposed and overexposed scenes, poor color balance, washed out colors, choppy sequences, jerky movements, low frame rate, artifacting, color banding, unnatural transitions, outdated special effects, fake elements, unconvincing visuals, poorly edited content, jump cuts, visual noise, and flickering. Overall, the video is of poor quality.

3. Click “Queue” to Generate the AI Video

After entering your prompts, simply click “Queue”. NVIDIA Cosmos will process your prompts, leveraging its diffusion models to create a short AI-generated video sequence.

nvidia cosmos ai text to video workflow

4. Save Your Video

Once the workflow is completed:

  • Right-click on the generated video preview to save it directly.
  • Alternatively, check the output folder in the workflow interface to download your newly created video.

nvidia cosmos comfyui text to video workflow

nvidia cosmos ai comfyui text to video workflowWith just a few clicks, you can quickly convert a simple text description into a dynamic AI-generated video—showcasing the power and convenience of the NVIDIA Cosmos workflow.


How to Make an Image into a Moving Video Using NVIDIA Cosmos

1. Apply the MimicPC Ready-to-Use Workflow

Head to MimicPC’s NVIDIA Cosmos image2video Workflow and click "Operate". For optimal performance and faster processing, remember to choose Larger-Pro or higher-tier hardware, ensuring you have enough GPU capacity to handle video generation.

how to make an image into a moving video

2. Upload Your Source Image and Input Prompts

  • Upload Your Image: In the workflow interface, add the static image you’d like to animate.
  • Add Prompts: Provide a positive prompt describing the motion or style you want and optionally a negative prompt to exclude elements or effects you don’t want. For example "Time slows as the ethereal Samoyed glides through the sunset-kissed meadow: its cloud-like fur catches every shade of dusk, from honey gold to soft rose. Each paw step creates ripples in the grass like waves in an emerald sea, while scattered light particles dance around its form like fireflies. The dog's movements are ballet-like - floating more than running - as it weaves through the golden hour light beams. Its eyes sparkle with joy, matching the twinkle of the first evening stars appearing above. The sunset continues to paint the scene, casting long, artistic shadows that stretch and dance alongside this snow-white creature in its moment of pure freedom and grace."

reddit best ai image to video generator

3. Download the Generated Video

Once your image and prompts are set:

  • Click the “Queue” button to start the process.
  • NVIDIA Cosmos will create a short video that adds motion based on your specified style and animations.
  • Download the resulting file either by right-clicking on the rendered preview to save locally or by accessing the output folder in the workflow interface.

ai image to video generator

how to make an image into moving videoThis streamlined approach to how to transform static images into moving videos capitalizes on NVIDIA Cosmos’ advanced diffusion models and MimicPC’s user-friendly workflow—unlocking creative possibilities for designers, marketers, and enthusiasts alike.


Conclusion

NVIDIA Cosmos has quickly emerged as one of the most versatile platforms for AI-driven video creation. With powerful diffusion and autoregressive models, seamless integration into ComfyUI, and open licenses for commercial use, it empowers creators and researchers to tackle everything from text-based prompts to turn static images into dynamic videos. Whether you’re exploring next-gen content creation, marketing campaigns, or advanced research projects, Cosmos delivers robust support for a variety of workflows—making it a standout AI video generator in an ever-growing ecosystem.

Of course, Cosmos is only one piece of the puzzle. Models like HunyuanVideo, LTX-Video, and others also offer unique approaches to AI-driven video technologies. Depending on your specific needs—speed, quality, fine-tuning, or cost—experimenting with different solutions can help you find the perfect setup for your video creation objectives. All of these can be found on MimicPC workflow templates page, which offers tons of ready-to-use video generation workflows for every requirement.

Ready to take your AI-driven video generation to new heights? Try MimicPC’s ready-to-use NVIDIA Cosmos text-to-video workflow and image-to-video workflow now. Experience cutting-edge models, a user-friendly interface, and efficient processing—no complicated setup required. Start exploring your creative possibilities with dynamic videos today!

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