Every channel has its own requirements: dimensions, ratios, main image background, video formats. Amazon and Walmart, for example, require perfect white on the product's first image.

Looking them up and applying them by hand takes time, and one mistake often means an asset rejected at upload.

Use case templates already have those constraints built in. You pick your destination channel and start from a compliant setup.

You then continue in the Omi studio as usual. To generate several assets at once, use the Batch render function.