From Section 5.3 in OpenRTB 2.5 Spec
| Value | Description |
|---|---|
| 1 | Audio Ad (Auto-Play) |
| 2 | Audio Ad (User Initiated) |
| 3 | Expandable (Automatic) |
| 4 | Expandable (User Initiated-Click) |
| 5 | Expandable (User Initiated-Rollover) |
| 6 | In-Banner Video Ad (Auto-Play) |
| 7 | In-Banner Video Ad (User Initiated) |
| 8 | Pop (e.g., Over, Under, or Upon Exit) |
| 9 | Provocative or Suggestive Imagery |
| 10 | Shaky, Flashing, Flickering, Extreme Animation, Smileys |
| 11 | Surveys |
| 12 | Text Only |
| 13 | User Interactive (e.g., Embedded Games) |
| 14 | Windows Dialog or Alert Style |
| 15 | Has Audio On/Off Button |
| 16 | Ad Provides Skip Button (e.g. VPAID-rendered skip button on pre-roll video) |
| 17 | Adobe Flash |
