Jan 1, 2027 is a Friday: five fitness promo clips for $3.15

New Year's Day 2027 falls on a Friday, so the first Monday sign-up push is January 4. A gym, studio or app has three days of attention before it, and five 5-second vertical clips cover them for $3.15 on Sume: Wan 3.0 lists $0.10 per second at 720p, Sume bills list x 1.25, so $0.125 per second and 5 seconds is $0.625, which a job rounds up to $0.63. Five jobs are $3.15.

The point of five rather than one is the offer. A resolution shopper responds to a different line each day: trial week, day pass, a friend discount, the class timetable and the last-chance Monday.

The five-day line-up

Each clip has the same scene and a different caption. Generate the scenes, not the words.

Submit and wait

Use the /v1/videos shape. Wan 3.0 accepts 2 to 30 seconds at 480p, 720p and 1080p, with audio. Pass callback_url for a webhook so a long batch does not need polling.

curl -X POST https://api.sume.com/v1/videos \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "wan-3.0",
    "prompt": "Sunrise light across an empty fitness studio floor, mats and dumbbells in a row, slow tracking shot, quiet room tone",
    "duration": 5,
    "resolution": "720p",
    "aspect_ratio": "9:16",
    "callback_url": "https://hooks.example.com/sume/video"
  }'

Keep the claim honest

A resolution ad is easy to over-promise. Do not show body results, before-and-after bodies or a weight number unless you can prove them; use the studio, the equipment and the class itself. The offer lives in the caption so you can change it without a re-render.

If the offer changes after you render, re-burn the caption with the video-captions job on the same clip, which is a smaller job than regenerating the scene.

• Friday Jan 1 is a public holiday in many places; confirm opening hours before you write the caption.
• Three days of posts, a Monday reminder and a Tuesday last call is a normal rhythm.
• Cap the batch in your own budget at the five-clip total plus one re-roll each.