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What is Multi-Media?

A native Ad Unit has one image or video area by default. This area is called media. With Add Media, a unit can have up to three media items: advertisers register one creative with a file sized for each media item, and your app tells the media items apart by ID and places each one wherever you want. Use it when a single ad needs images or videos of different sizes. For example, you can place a landscape main image and a square thumbnail together in one ad.

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Prerequisites

  • The unit format must be Native, with a size other than No Image/Video selected in Media Size.
  • To add media to an existing unit, the unit must not have received ad requests and must not belong to an Ad Product.
  • The unit must not be connected to Backfill Ads. Native units with two or more media items don’t support Backfill Ads, so use a native unit with a single media item for placements that need Backfill Ads.

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Add Media

1

Select Native Format

On the Ad Unit creation screen, select Native as the unit format, then select the size of the first media item in Media Size.
2

Add Media

Click Add Media. Click it again if you need another media item (up to three).
3

Enter Media Details

Enter a Label and Size for each media item, and change the ID of Media 2 and 3 if needed. See Media Fields for each field.
4

Save Unit

When you finish, save the unit.

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Media Fields

All three fields are required.

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ID Rules

  • Use only lowercase letters, numbers, and _.
  • An ID can’t be the same as the ID of another media item or a native additional field.
  • headline and body are reserved for the default fields, so you can’t use them.
  • After you save the unit, you can’t change its IDs.
Your app finds media items by ID. Finalize the IDs before you start developing the app.
Saved IDs appear in Media Size on the Ad Unit detail screen. Click an ID to copy it.

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Edit and Delete Media

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Ad Products and Creative Sets

When you create an Ad Product, multi-media units are grouped into one Creative Set only if, in addition to the other set criteria, every media item has the same size and ID.

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Creative Registration by Advertisers

Advertisers register one creative with a file for each media item and can submit only after every media item has a file. For detailed steps, see Registering Creatives.

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Next Steps

Creating Ad Units

Create your own Ad Unit.