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Glossary · Generation Modes

What Is Text-to-Video in ComfyUI?

By Earngenix Team ·

⚡ Quick Answer

Text-to-video generates a short clip directly from a written prompt, with no starting image involved. It's the video equivalent of text-to-image, but the model outputs a whole sequence of frames instead of a single picture — using a video-capable model like Wan, LTX, or HunyuanVideo instead of a normal image checkpoint.

Because it has to keep dozens of frames consistent with each other, text-to-video needs noticeably more VRAM and generation time than an equivalent single image.

Where You'll See It

A text-to-video workflow loads a dedicated video diffusion model instead of an image checkpoint, and includes a node setting the clip's frame count or length. Like text-to-image, there's no Load Image node anywhere upstream of the sampler.

Quick Example

Prompt "a cat walking through tall grass, cinematic lighting" into a Wan2.2 text-to-video workflow, and it generates several seconds of footage matching that description — no reference photo of a cat or a field required.

Prompting alone gives fairly loose control over exact motion. For more precise control over how things move, look at motion-transfer or motion-strength settings on specific video models rather than relying only on wording.

Frequently Asked Questions

It depends on the model and your VRAM, but most consumer setups comfortably produce clips in the 2–6 second range. Going longer means holding more frames in memory at once, which scales VRAM use fast.

Yes, significantly more. An image model holds one frame in memory; a video model holds dozens of frames at once, so VRAM requirements are typically several times higher for a comparable resolution.

Only loosely through wording in the prompt by default. For precise control over movement, motion-transfer or motion-strength controls on specific video models give you a more direct handle than prompting alone.

See It In Action

Ready to generate your first clip?

Our LTX-2 guide walks through a complete text-to-video setup.

Published: 2026-09-17 · Last updated: 2026-09-17

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