Walmart Media Library video: 100 MB limit and 200-character title

To add a product video in Walmart's Media Library, the file must be 100 MB or less and the title can be at most 200 characters; Walmart says processing takes under 60 seconds (read 2026-10-02). A Sume clip is a downloadable media file, so check its byte size before upload and keep a short title in your sheet.

What the Media Library page says

These are the rules on Walmart's Media Library guide (read 2026-10-02). The guide does not give a video format or resolution list on that page, so do not assume one; Walmart points to a separate technical-requirements document for the full spec.

What Sume gives you

A finished Sume video job returns a media URL; you download the file and measure it. The docs do not state a file size per clip, and a 1080p clip is bigger than a 720p clip of the same length, so there is no number to quote. Measure the file you got.

Shorter clips and a lower resolution both keep files smaller. The catalogue lists supported resolutions and durations per model, so read those before you pick a tier (Video API).

A pre-upload checklist

If a clip is too large, trim it to the part that sells the item with video trim, or re-render it at a lower resolution, rather than compressing it by hand.

• File is 100 MB or less on disk, not an estimate.
• Title is under 200 characters; keep it to the product name and the angle shown.
• The clip shows the product the buyer receives. Walmart's AI line is about accuracy, which is also the point of its AI content rule.
• The product is not in a restricted category.
• You have the right to every element in the clip, including music and any person shown.

Sizing a batch of videos

If you make many clips, set the size check as a hard gate in the pipeline: measure bytes, compare with 100 MB, and route anything over to a trim or a lower-resolution re-render. Do the same for the title length when titles come from a sheet, because a long product name plus a variant string can pass 200 characters without anyone noticing.

Video jobs take longer than images, so use async or webhook mode and poll or receive the result rather than holding a request open (Jobs and results).

Limits of this post

Sume has no Walmart upload integration in its docs, so you add the file in Seller Center yourself. This post covers the size and title rules the Media Library page states, not Walmart Connect ad video, which has its own length rules.