Holiday clip for a marketplace video slot: what to check before upload
Amazon, Shopify, Etsy and TikTok Shop each set their own video rules. Sume gives you ratio, length and size controls; read each platform's current page.

Amazon, Shopify, Etsy and TikTok Shop each publish their own video rules and change them. This post does not quote those numbers. It lists what Sume lets you control, so you can match the current rule from each platform's own page.
What you control
The Sume side of the checklist.
| Property | How to set it |
|---|---|
| Length | Pick duration on POST /v1/videos, or trim for $0.02 |
| Ratio | Timeline fit: cover, contain, stretch or blur |
| Resolution | 480p, 720p or 1080p on Seedance 2.5 |
| Check a file | Video inspect probe is free |
Before upload
Run the probe on the finished file and compare duration, size and ratio with the platform's page for that day.
Content rules
Marketplaces have separate rules on claims, price text and AI disclosure. Read those too.
- Do not show a price that will change
- Do not show an unavailable feature
- Disclose generated people where required
Not verified here
The marketplace limits themselves were not checked for this post.
Sources
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Written by Sume