Video ad end card images: Mintegral, Liftoff, Unity and Axon sizes

App-install networks want a still at the end of the video, and each sizes it differently. Mintegral uses its main image of 1200 by 627 or 628 as the endcard. Liftoff lists a portrait image at 1080 by 1920 in PNG, JPG or GIF up to 1 MB. AppLovin Axon lists a portrait page image of at least 270 by 480 up to 10 MB. Unity requires an end card but documents it elsewhere.

Sizes compared

Liftoff's page describes its portrait image as a separate asset from video, though it mentions an end card for videos, so confirm with Liftoff that this is the end card size you need.

Making the still

The Images API publishes the parameters each model accepts as capability descriptors in the catalog, including aspect_ratio and n (1 to 4 on the example in the docs). Ask the catalog for the ratios a model offers, request 9:16 for the portrait ones, then check the size in the result.

Mintegral's 1200 by 627 is about 1.91:1, not a standard preset. If your model does not list that ratio, generate a close one and crop to the exact pixels.

Limits

Sume's docs do not state a file-size cap for image output, so Liftoff's 1 MB cap is a check you run on the file. A PNG at 1080 by 1920 can exceed it, and the choice between PNG, JPG and GIF is Liftoff's list, not a Sume setting.

The Mintegral page I read gave no format or file-size limit for the endcard, so use its asset spec page directly.