Tunnel bow-thruster props spin in Flux 3 T2V at 9cr with native wash (5–20s)

A tunnel bow-thruster propeller writes wash into Flux 3 text-to-video at 9cr, 5–20s, native audio; keep the tunnel ID you stock, and do not Omni a yacht-broker hull tour.

A bow-thruster clip that books is this tunnel: the ID you stock, the grille, the propeller family a yard will match. The sound that belongs is wash — water through the tunnel, a prop bite. A constructed broker walking the topsides is a different file. Do not glue those jobs into one generate.

Keep the tunnel ID you stock

Procurement is matching a tunnel: inside diameter, grille, blade count, the length a hull isometric already shows. Ask for “a luxury yacht bow thruster in crystal water” and the model will invent a cousin tunnel: a prettier grille, a five-blade where you sell four, an ID that breathes. That is a different SKU.

Write the hardware you actually ship. Tunnel ID in the prompt as a constraint, not as atmosphere. Four-blade bronze in a round tunnel, grille in frame, camera locked on the mouth, wash exiting, no deck, no broker. Stop. Re-describing “300 mm tunnel, 10 kW, proportional joystick” restages the unit and invites lettered ratings.

Tunnel ID is a claim. A 250 mm mouth that finishes as 400 is a different install. Four blades becoming five is a different prop. A take that grows a stern housing or melts the grille into a surface-drive is scrap.

Manufacturers is the plant page — chips, docks, a line you already film. This leftover is one tunnel mouth. Do not invent an opened gearbox as a last frame.

This slug is text-to-video. No still required. If the grille or exact ID must match a catalog photo, you are on an image-to-video row, not this leftover. A serial on a spec sheet always needs overlay, never a generate.

Flux 3 writes wash at 9cr, 5–20s, native audio

Flux 3 Text to Video is Black Forest Labs’ frontier video model — video with native audio directly from a text prompt, at up to 1080p, 5–20 seconds, across eight aspect ratios. Category is text-to-video. audio is true. Nine credits is the catalog figure. No still required. Open it from the AI video generator. Generate a video from text is the named agent job for the same door.

Durations run 5s through 20s, every second. Start at 5s, 6s, or 7s. A 20-second native-audio miss is a long miss with a band you did not pick. Quality settings: 720p and 1080p. Do not prompt 4K and expect a 4K enum that is not here. Aspect includes 21:9, 16:9, 1:1, and 9:16. Pick the ratio the listing will ship.

Because audio is native, write the wash: water through the tunnel, prop bite, no music, no broker VO. A silent prompt still gets a soundtrack you did not choose. The sound-into-the-prompt argument for this slug is Flux 3 Text to Video: write the sound into the prompt. This page only spends it on tunnel wash.

Prompt the prop, not a marina

The prompt is travel, not a yacht novel. Prop spins in the tunnel; wash exits the mouth; camera locked; no deck furniture, no crew, no new grille. If you re-describe the hull, Flux 3 will argue with a thruster it invented.

Do not:

• Prompt “sunset marina, 60-foot motoryacht, broker on the bow.”
• Ask the model to letter kW or tunnel ID into the casting.
• Keep a take where four blades became five, or a tunnel became a surface drive.
• Write a joystick rating into the generate and treat the glyphs as a datasheet.

If a power or ID string must appear, burn it after picture lock. Overlay is a later pass, not a Flux typesetting job.

Native wash is diegetic: water, prop, tunnel. It is not a yacht broker. If you describe a person, you can still get a person. Hold the mouth. Prompt wash. Keep lips out of frame. Inspect the midpoint — extra blades, a fattened tunnel, a hull that walks into a broker tour. If the middle is wrong, reroll. Stitching four marina clips around the bow is how the ID breathes.

Do not Omni a yacht-broker hull tour

Gemini Omni Video is the live multi-input Omni in the catalog: text-to-video, image-to-video, and reference-to-video. 4 / 6 / 8 / 10 seconds. Qualities 720p, 1080p, 4K. 9 credits on the listed rate. Quota: images + videos×2 + character_ids ≤ 7. audio is empty on the brief — do not claim a soundtrack. That row is built to ingest a pile of references and invent a scene.

A multi-shot yacht Omni is not this tunnel. Seven stills of a hull you almost have will still decide a cousin grille and a walking extra in deck shoes. Character IDs make the extra worse. 4K of the wrong mouth is still the wrong mouth.

Do not prompt a yacht walkthrough. Do not spend the seven-slot quota on a salesperson character ID. Do not lipsync a generated face holding “your” thruster.

Flux 3 leftover is native wash, no broker. Overlay kW or ID after lock if they must sit on the file. If a human must speak, that human is on payroll and on a different take. Manufacturers can still film the real shop. This SKU page cannot borrow a hull tour as a generate. Pause on the mouth. If the freeze-frame would not pass the isometric, throw it out.

FAQ

What happens if I do not mention wash in the Flux 3 prompt?

You still get a soundtrack. audio is true. Native audio from a text prompt is the catalog description. Specify wash, a quiet tunnel, or silence. A mute brief is how a frontier model scores a marina for you.

Can I generate 4 seconds of prop spin?

Not on this ladder. Flux 3 text-to-video durations start at 5s and go to 20s. The shortest test is five seconds. Kling-style 3s / 4s rows are a different family. Stretching a 5s Flux take in an editor is a later decision.

Why not Gemini Omni Video if I have several hull stills?

Because Omni will restage a tour. Quota and 4K do not pin the tunnel ID. audio is empty on that brief — you will not get the wash this leftover is for. This page is prop spin on Flux 3 T2V: 5–20s, 9 credits, native audio, tunnel ID held, no broker.

Do I need a photo of our actual tunnel?

Only if the grille and ID have to be ours. Then you are on image-to-video, not this text-to-video slug. A generic wash plate does not need the factory photo. Either way, throw any take that morphs the ID, and do not Omni a yacht-broker hull tour to “prove” the install.