Creative subtypes (audio and video) value 4 means VAST 1.0 Wrapper
VAST 1.0 Wrapper: a VAST 1.0 response that redirects to another VAST document.
When to send it
Send 4 when the player follows VAST 1.0 wrapper responses, which point to another ad server instead of containing the creative. The wrapper values exist so a seller can accept inline documents of a version and still refuse redirects of that version.
Very little VAST 1.0 traffic remains, so 4 rarely decides whether a buyer is eligible. It is confused with 1 (VAST 1.0 inline). A list that contains a wrapper value without its inline value is unusual and worth checking.
Example
{
"imp": [
{
"audio": {
"protocols": [
4
]
}
}
]
}Fields that carry it
Other values in creative subtypes (audio and video)
| Value | Name |
|---|---|
1 | VAST 1.0 |
2 | VAST 2.0 |
3 | VAST 3.0 |
5 | VAST 2.0 Wrapper |
6 | VAST 3.0 Wrapper |
7 | VAST 4.0 |
8 | VAST 4.0 Wrapper |
9 | DAAST 1.0 |
10 | DAAST 1.0 Wrapper |
11 | VAST 4.1 |
12 | VAST 4.1 Wrapper |
13 | VAST 4.2 |
14 | VAST 4.2 Wrapper |
15 | VAST 4.3 |
16 | VAST 4.3 Wrapper |
The creative subtypes (audio and video) list page explains the whole list and its common mistakes.