Boxing Day 2026 sale video: six regional versions from one clip

Boxing Day 2026 is Saturday 26 December, and the same sale has different names and rules in different countries. Generate one 5-second product clip, then burn six regional lines on it with six caption jobs. The clip is $0.625 and the captions are $1.20, so about $1.83 on Sume.

The country list is from Wikipedia's Boxing Day article, read 2026-10-03: a public holiday in most of Australia (not South Australia), a statutory holiday in Ontario and a federal holiday in Canada for federally regulated workplaces, a statutory holiday in New Zealand, a bank holiday in the UK, a general holiday in Hong Kong (statutory since 2024) and, in South Africa, the Day of Goodwill since 1994. The article also says Black Friday has reduced Boxing Day's retail prominence since the 2010s, especially in Canada and the UK, and that stores historically opened very early with large discounts.

Why regional versions are worth six jobs

A shop that sells in several countries will find that 'Boxing Day sale' is the wrong words for South Africa and an odd one for customers outside the Commonwealth. A caption job costs $0.20, so a correct local line is cheap compared with explaining a mismatch in the comments.

The cost line

Generate the clip with wan-3.0 through POST /v1/videos at 720p and 5 seconds: $0.10 per second list, x 1.25, so $0.625. Six caption jobs add $1.20. Total $1.825. If you already have a clip from Black Friday, skip the generation and use Video trim ($0.02) to cut the best 5 seconds; then the six versions cost $1.22.

import os, sys, uuid, requests

def main():
    key = os.environ.get("SUME_API_KEY", "")
    if not key:
        sys.exit("Set SUME_API_KEY first")
    body = {
        "video_url": "https://media.sume.com/artifacts/YOUR_ARTIFACT/clean.mp4",
        "style": "slam",
        "cues": [
            {"text": "Day of Goodwill sale", "start": 0.0, "end": 3.0},
            {"text": "Ends Sunday", "start": 3.0, "end": 5.0},
        ],
    }
    resp = requests.post(
        "https://api.sume.com/v1/video-captions",
        json=body,
        timeout=60,
        headers={"Authorization": "Bearer " + key,
                 "Idempotency-Key": str(uuid.uuid4())},
    )
    print(resp.status_code, resp.json())

if __name__ == "__main__":
    main()

Timing

Boxing Day falls on a Saturday this year, so the weekend and the holiday coincide. Stores that open early would want the clip posted the evening of Christmas Day or the morning of the 26th; prepare and approve all six versions by 18 December.

What Sume does and does not do

• Does: make the clip and the six captioned versions.
• Does not: set prices, currency or shipping cut-offs. Put real, region-specific numbers in the cue text yourself.
• Does not: check local advertising rules for sales claims.