playbackend 1 means On Video Completion or when Terminated by User
Playback runs until the ad completes or the viewer stops it, even if the player scrolls out of view.
When to send it
Send 1 when only completion or a deliberate user action, such as closing, skipping, or navigating away, ends the ad. Scrolling the player out of view does not stop it. CTV players, full-screen interstitials, and dedicated video pages fit this mode, because their player never leaves the screen.
Buyers read 1 as a placement where completion depends on the creative and the viewer, not on scrolling. On a scrolling web page, though, it can mean the ad keeps playing unseen, which hurts viewability, so buyers read it together with Video.plcmt and Video.pos. It is confused with 3, where playback also continues, but in a floating unit that stays visible.
Example
{
"imp": [
{
"video": {
"playbackend": 1
}
}
]
}Fields that carry it
Other values in playback cessation modes
| Value | Name |
|---|---|
2 | On Leaving Viewport or when Terminated by User |
3 | On Leaving Viewport Continues as a Floating/Slider Unit |
The playback cessation modes list page explains the whole list and its common mistakes.