plcmt 2 means Accompanying Content
Pre-, mid-, or post-roll in a player that sits among text or images and starts when scrolled into view.
When to send it
Send 2 when the ad plays with streaming video content, but the player sits before, between, or after paragraphs of text or other page content rather than being the reason for the visit. Playback starts only once the player enters the viewport, and the player may float or stick as the reader scrolls past.
Much of the inventory once sold as old Video.placement 1 belongs here, which is why buyers treat 2 as its own tier, priced below 1. Signals that usually travel with it are Video.playbackmethod 6 (starts in view, sound off) and Video.playbackend 2 or 3. It is confused with 1 when the article player has sound on, which alone does not make it instream if the video is not the focus, and with 4 when the player carries no content video at all.
Example
{
"imp": [
{
"video": {
"plcmt": 2
}
}
]
}Fields that carry it
Other values in plcmt subtypes (video)
| Value | Name |
|---|---|
1 | Instream |
3 | Interstitial |
4 | No Content/Standalone |
5 | Pause |
6 | Screensaver |
7 | Overlay |
8 | Squeezeback |
9 | In-scene |
The plcmt subtypes (video) list page explains the whole list and its common mistakes.