Gemini Omni 1.1 Flash Text to Video with Sound, up to 4K

Last verified: November 1, 2026

Gemini Omni 1.1 Flash turns a written prompt into high-quality, high-resolution video with its own audio track, and its output goes up to 4K. Put the whole shot into the Prompt box: who is in frame, what happens, how the camera moves and what the viewer hears. Then pick 4K under Resolution once a take is worth keeping. That makes Gemini Omni 1.1 Flash text-to-video a practical way to make short social clips, ad moments and story beats that need to look sharp and sound finished without a separate audio pass.

Gemini Omni 1.1 Flash is designed for high-speed video generation. The settings here only cover clip length, resolution and frame shape. Everything else (subject, action, camera, lighting, sound) has to be in the words you write. Write the prompt as a shot brief, not a keyword list, and change one thing per run so you can see what each change does to the clip.

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Capability Snapshot

Gemini Omni 1.1 Flash Specs at a Glance

What you enter, what you can set and what you get back from each run.

Input

A text prompt of up to 20,000 characters

Video Duration

4, 6, 8 or 10 seconds

Resolution

360P, 720P, 1080P or 4K

Aspect Ratio

9:16, 16:9

Output

1 video per run

Tips for Better Results with Gemini Omni 1.1 Flash

Drafting at Low Resolution Before the Final Render

Run early versions at the lowest Resolution option, and switch to the top one only for the take you plan to publish. Google reports that its lowest resolution generates up to 60% faster than its standard resolution, so drafts are the place to settle framing, pacing and sound cues. Once a draft looks right, leave the prompt and the other settings as they are and change only Resolution for the final run.

Keeping Each Short Clip to a Single Scene

Google's video best practices recommend clear, specific prompts and keeping short videos to a single scene. A clip lasts only a few seconds, so give it one location, one main action and one mood. A prompt that jumps from a kitchen to a rooftop to a beach tries to fit three scenes into too little time. If your idea needs several places, write each one as its own prompt and run them separately.

Reusing One Character Description Across Clips

When the same person or mascot appears in several clips, Google advises pasting the full, unchanged character description into every prompt and only editing the parts about the new action or setting. Keep a master description (face, hair, clothing, voice) in a note, paste it at the top of the Prompt box each time, and write the new scene below it. The prompt box has plenty of room for a detailed description plus the scene, so don't shorten it from one clip to the next.

How to Make a Video from Text with Gemini Omni 1.1 Flash

Four steps from a written scene to a downloaded clip.

1

Describe the shot in the "Prompt" box

Type your scene into "Prompt". It takes up to 20,000 characters, which is plenty for a full shot brief covering subject, action, setting, camera, lighting and sound. If you only have a rough idea, click "Enhance Prompt" under the box to get fuller versions. Your prompt only changes if you pick one of the suggestions, so it's safe to try.

2

Set "Video Duration", "Resolution" and "Aspect Ratio"

"Video Duration" offers 4, 6, 8 or 10 seconds and starts at 4, so raise it whenever the action needs time to play out. "Resolution" offers 360P, 720P (the default), 1080P and 4K. Use 360P while you test the wording and save 4K for the take you'll publish. "Aspect Ratio" defaults to 9:16, which suits Shorts, Reels and TikTok. Switch to 16:9 for YouTube, websites and presentations.

3

Start the run with "Generate"

Click "Generate" once your prompt and settings are ready. Each run returns one video, so if you want a second take to compare, generate again.

4

Download the finished video

Watch the clip with sound on before you download it. The audio track is part of the result, so check it as closely as the picture. If something is off, fix the prompt and generate again before you move to a higher resolution.

Generating a New Clip vs Editing Existing Footage

Which Gemini Omni 1.1 Flash workflow to open depends on what you already have.

Starting material Every run here starts from a written prompt alone, so you can make a clip before any footage exists. The Edit Video workflow starts from footage you already have plus written instructions, since the model is designed for editing as well as generation. Choose text-to-video when the scene only exists as an idea, and Edit Video when you have footage you want to keep and adjust.
Revising a take you mostly like A revised prompt here starts a new run that returns a new video, which suits reworking the whole shot. Editing changes an existing clip through written, conversational instructions, so the take you already like is where the change starts. Regenerate here when the composition or action needs rethinking, and move the clip to Edit Video when it's close and you'd rather change it than start over.
Start with text-to-video when you're creating a scene from scratch. When a clip, generated or filmed, is close but needs a change, editing it is the more direct route.

Common Gemini Omni 1.1 Flash Video Problems and Fixes

What usually goes wrong with text-to-video runs, and what to change before you generate again.

Fast or complicated action comes out jumbled

Google's model card lists complex motion as one of the areas that's still hard for the model. The usual cause is a prompt that packs several moving subjects or quick choreography into a few seconds. Cut the action down to one subject making one clear movement, describe its pace in plain words (slowly lifts, walks steadily), and choose a longer Video Duration if the movement needs time. Then generate again. If the motion still breaks, split the action across two clips.

Words on signs or labels come out misspelled

The model card also says that rendering perfectly accurate text is still a challenge, so lettering in the scene can come out wrong even when your prompt spells it correctly. Keep on-screen wording to a word or two, cut down the number of signs in frame, and regenerate. For titles, prices or anything that has to be exact, leave the text out of the prompt and add it afterwards in your editor.

There's music in my clip that I never asked for

By default the model tries to give a video a fitting audio track, so if your prompt says nothing about sound, it picks the sound itself. Describe the soundtrack you want, for example only rain on a window and distant traffic with no music. If you do want music, name it exactly. Then generate again.

The clip ends before the action finishes

The form starts on its shortest Video Duration, which is too short for an action with several beats. Raise Video Duration to fit what you describe, or cut the prompt down to the one moment you need, and run it again.

My idea needs more than one clip

Each run returns a single video, and no clip can be longer than the longest Video Duration option. A story with several scenes, or more seconds than that, has to be built from separate runs. Write one prompt per shot, generate them one at a time with the same Aspect Ratio so they cut together, and join the downloads in your video editor.

Frequently Asked Questions

Can Gemini Omni 1.1 Flash make animated or stylized videos, or only realistic footage?

It isn't limited to realism. The model card describes it as able to generate high-quality, high-resolution videos in a wide range of visual styles. Name the style at the start of your prompt (stop-motion clay, watercolor animation, grainy VHS home video) and describe the materials and lighting that go with it, so the look holds for the whole clip.

What makes one generation cost more than another?

The credit cost of a run is calculated from the options you choose and appears above the Generate button once you're signed in. It changes with Video Duration and Resolution, so check the figure again after you change either one. Clicking Enhance Prompt doesn't use credits.

What if I want to change part of a clip instead of making a new one?

This form makes new clips from text: change the prompt and generate again when you want a different take. If you already have footage, generated here or filmed, and you only want to change part of it, take it to the Edit Video page for Gemini Omni 1.1 Flash instead.

Is the 4K option native 4K or upscaled?

It's upscaled. Google describes the model's 4K output as upscaling and pitches it as the way to give final projects a polished, professional look. Choose 4K for the version you deliver, and judge the shot itself (motion, framing, sound) at whatever resolution you drafted in.

How do I write dialogue so a character actually speaks the line?

Put the line after a colon and leave out the quotation marks. Google's video best practices show the speaker followed by a colon and the words as the recommended form, and mark the same line in quotation marks as not recommended. For example: An old sailor says: Hold the line steady. Describe the voice you want (calm, gravelly, whispered) before the colon.

References

Sources and citations used to support the content provided above.

Updated: 2026-11-01 13:38:27 3 Sources

deepmind.google

Source Link
https://deepmind.google/models/model-cards/gemini-omni-flash/

blog.google

Source Link
https://blog.google/innovation-and-ai/technology/developers-tools/build-with-gemini-omni-1-1-flash/

ai.google.dev

Source Link
https://ai.google.dev/gemini-api/docs/omni