Blenders: diegetic crush vs identity of the jar

Vidu vs Seedance. A blender film looks like one product. It is two jobs. The crush — ice, fruit, the jar doing work — is diegetic sound timed to motion. The jar — lid, gasket, the logo — is identity. Vidu Q3 Image to Video is the sound-forward still-to-motion row. Seedance 2.5 Image to Video is the lock on the still you already approved. Averaging them in one generate is a great fizz on a jar that is not yours.

Crush is sound; the jar is a still

Watch a blender ad muted and half the craft disappears: the crack of ice, the grind, the lid click. That is diegetic sound, born with the picture. Vidu Q3 generates native audio with the scene. Write the mix in the prompt or you will get the mix it imagines.

The jar is a different contract. Pack colour, blade housing, the mark on the glass — if those drift, the crush was a commercial for a competitor. Seedance 2.5 I2V animates a locked still without stitching shorter clips into a second product. The still is the cheap place to lock the SKU.

If you find yourself prompting "our blender crushing ice, exact shade of the jar, logo facing camera," you do not have one model problem. You have two shots pretending to be one.

Vidu Q3 for the diegetic hit

Vidu Q3 I2V turns a static image into a clip. An image is required. Audio is on. Max output is 1080p (360p, 540p, 720p, and 1080p listed). Durations are only 5s, 10s, and 15s. Features named: image-to-video, motion generation, high fidelity. The catalog lists the row at 16 credits and marks it discounted. Discounted is not a reason to start at 15s on a wrong still.

Write a five-second crush and a mix note: ice crack, motor grind, no music, no speech unless you want a line. Name two or three sounds, not ten. 5s is the shortest legal clip on this ladder. If the motion fails in five seconds, you do not have a cheaper 3s retry here.

Crop the still to 9:16 or 16:9 before upload; this slug has no aspect-ratio list. If the face must speak a locked line, this remains image-to-video, not lipsync.

Seedance I2V for the labelled jar

Seedance 2.5 I2V animates a single still into a continuous clip at up to 720p, four seconds to thirty, native audio with the picture. First frame is the contract. A last frame is optional when the move has a destination — a turn that must land on the back of the jar, a push that must end on the mark.

Thirty seconds in one pass is how a hero orbit does not restyle the logo at second twenty-two. 720p is the ceiling. For a product-page loop of the actual unit, that is the job. Prompt camera and light only.

Do not confuse I2V with reference-to-video. A single pack shot needs the frame you signed off, moving.

Split the film

A practical blender slate:

1. Lock one still of the real jar. If you would not print it, stop.
2. Seedance I2V for the identity pass — orbit, light, a hold that is still your SKU.
3. Vidu Q3 I2V for the 5s crush, sound written into the prompt, 1080p when you will post it.
4. Stitch. Caption after. Native audio is not a subtitle file.

Do not name-swap the rows because both say image-to-video. Q3 is 5 / 10 / 15, 1080p, audio on. Seedance 2.5 I2V is 4–30s, 720p. The numbers are the model.

FAQ

Can Vidu Q3 be my only blender model if the sound is the ad?

Yes, if the still is already the real jar and the shot fits 5, 10, or 15 seconds. A moodboard still will animate a jar that is not yours, with excellent foley. Lock the still first.

Why not run the crush on Seedance for the longer take?

Seedance owns the lock and the long single pass. The crush is a short satisfaction beat whose point is diegetic sound. Use Q3's 5s for that beat. Use Seedance for the labelled orbit.

Does Vidu Q3 output 4K or a spoken recipe?

Max listed output is 1080p. Audio is native-on — a mix you should specify, not lipsync to a script you never attached. For 4K or a locked spoken line, change rows after the still is approved.

Do I need a last frame on Seedance for a jar turn?

Only when the landing still is approved and must match — back of pack, a mark, a colourway. A single hero still with a camera move is the usual job. Adding a last frame is control, not a default.