With the new “Asset Settings”, you can define different formats for each custom image needed for display in SBs and/or SDs. They can be accessed from the small menu to the right of each image's details, either on the “Assets” page or in the Creative sections when creating or updating campaigns. An integrated cropping tool lets you define a section of the image for each format. When a custom image is used in a Creative, these settings are automatically applied. If a custom image is selected that does not have the settings required for the selected campaign type, you will be automatically prompted to make these settings.
Now that multiple image formats are supported, you can easily create SD Creatives with custom images or add them later.