linearity 1 means Linear
Linear: the ad takes over the player for its duration, as in pre-, mid-, post-roll, and outstream video.
When to send it
Send 1 when the player expects a linear ad, a video or audio creative that occupies the player while it runs. Pre-roll, mid-roll, post-roll, and outstream units all take linear creative. In the bid, the markup should be a VAST document whose creative is a Linear element.
Buyers use 1 to choose video creative rather than overlay assets. It is confused with Video.plcmt 1 (Instream): an outstream player wants linear creative too, so linearity 1 says nothing about whether there is content around the ad. OpenRTB 2.0 to 2.5 labeled it Linear / In-Stream, which encouraged exactly that mix-up.
Example
{
"imp": [
{
"video": {
"linearity": 1
}
}
]
}Fields that carry it
Other values in linearity modes
| Value | Name |
|---|---|
2 | Non-Linear (i.e., Overlay) |
The linearity modes list page explains the whole list and its common mistakes.