28-second vertical ad from four 7 s Omni clips: $5.35 with the render

Four 7-second Gemini Omni Flash 1.1 clips at 1080p cost 4 x 7 x $0.1875 = $5.25 on Sume, and a Timeline render of the 28-second cut adds $0.10, because render is $0.10 per output minute with a one-minute minimum. The finished 9:16 ad is $5.35, with native audio from each clip. At 720p the same plan is 4 x 7 x $0.125 = $3.50 plus $0.10, or $3.60.

Cost lines

Omni accepts 3 to 10 seconds per job, so a 28-second spot needs several jobs. Splitting into four equal 7-second shots keeps each under the ceiling and leaves room to cut.

Keeping the shots consistent

Four independent generations will drift. Use the first frame of each clip, or pass the same reference images, with tokens such as <IMAGE_REF_0> in each prompt, so the product and the person look alike across cuts. Omni accepts up to 10 reference images per request.

Because audio is always on and cannot be disabled, each clip arrives with its own soundtrack. In the timeline you can lay one audio spine under the whole ad and let the clip audio fall away; read the Timeline docs for how the audio mode is set.

• Omni ratio for this ad: 9:16, set per clip.
• Render price: $0.10 per output minute, rounded up, minimum 1 minute, maximum 30 minutes.
• A timeline holds 1 to 200 video slots, so four slots is well within the limit.

What to check before you pay

Draft all four shots at 360p first: 4 x 7 x $0.0375 = $1.05. If the pacing works, rerun at 1080p. The draft plus final is $1.05 + $5.35 = $6.40.

Why 7 seconds, not 10

Three 10-second clips would give 30 seconds for 3 x 10 x $0.1875 = $5.625 at 1080p, plus the same $0.10 render. Four 7-second clips give a tighter 28 seconds for $5.25, and four cuts instead of three keeps a short-form ad moving. Neither length is wrong; choose by the number of shots your story needs.

All figures use default options and no extras; check usage.cost on the first job.