Create Your First Video
The full loop, from first brief to a downloaded file.
The core loop
- Create a project, or open the one onboarding made for you.
- Send a clear creative brief in the chat.
- Wait for the build — the preview panel appears as soon as the agent starts.
- Play the preview and send narrow follow-ups.
- Export when it looks right.
Most first videos take one build and two or three follow-ups.
Write a brief that lands
The agent works best when your first message answers four things: format, duration, look, and ending. Everything else it will infer or ask about.
Create a 30-second launch teaser for an electric bike in 16:9.
Style: bold kinetic typography, warm orange highlights, fast transitions.
Ending: final 3 seconds lock on the logo and URL.If the brief is thin on a first build, fluos may pause and ask a couple of clarifying questions rather than guessing. Answer them and it continues.
Not sure what you want yet?
Switch the composer to Plan and talk it through first. Plan mode is read-only — it produces a written plan you approve before anything is built, and it never spends a build. See Plan Mode.
Attach what you have
Drag files onto the chat, or use Add content in the composer.
| Type | Formats | Size limit |
|---|---|---|
| Images | PNG, JPG, GIF, WebP, SVG | 10 MB |
| Documents | 10 MB | |
| Spreadsheets | CSV, XLS, XLSX, XLSM | 50 MB |
| Video | MP4, WebM, QuickTime, M4V | 1 GB stored (up to 5 GB accepted and compressed on the way in) |
A few things worth knowing:
- SVG logos are first-class. fluos inlines the vector markup so individual paths can animate. Always prefer the SVG over a flattened PNG. See Brand Kit and Logos.
- Uploads default to reference, not embed. A screenshot or mood board tells the agent what to make things look like. If you want the actual file on screen, say so: "show this photo full-bleed in scene 2".
- Spreadsheets become charts. Attach a CSV and ask for an animated bar race or line chart.
- Anything you upload lands in the Library and can be reused in other projects in the same workspace.
You can also paste a URL. fluos fetches the page and uses it as context — handy for "make a teaser in the style of this landing page".
Watch the build
The preview panel opens as soon as the build starts and shows a status chip:
- Booting — an isolated sandbox is starting up.
- Live — the composition is running; you can scrub and play it.
- Updating — a follow-up build is being applied in the background.
Behind the scenes the agent writes the composition, generates any narration or music, validates its own output, and repairs motion problems before showing you the result. That is why a build takes longer than a chat reply.
Iterate in small steps
Follow-ups work best when each one changes a single thing.
Slow the logo reveal — it should settle by 2s and hold.Scene 3 text is too small. Bump it and keep it inside the safe margins.Swap the background to a deep navy gradient, keep everything else.Broad rewrites ("make it better", "redo it") usually cost you a good version. If you do lose one, version history has every successful build.
Questions are free
Asking fluos a question — "what aspect ratios can you do?", "why did scene 2 feel slow?" — gets a conversational answer and does not consume a build. Only messages that actually commission video work count.
Export
Press Download, pick a format and quality, and start the export. MP4 keeps audio; GIF is a silent loop. Full detail in Preview and Exports.
Next steps
Patterns that consistently produce good first builds.
Playback controls, formats, and limits.
Lock your logo, palette, and type.
Turn one master into 9:16 and 1:1.