[null,null,["最后更新时间 (UTC):2025-03-07。"],[[["The IMA SDK uses Active View reporting to measure ad viewability, ensuring ads are visible to users before sending signals to the ad server."],["Publishers initialize the process by linking their ad display container and ad request, enabling Active View to measure the view."],["Viewability can be verified by monitoring HTTP requests for `active_view_vide_measurable_impression` and the `mtos` parameter."],["Custom video display implementations may require layout adjustments to ensure accurate viewability metrics, with support available through the IMA support forum."]]],[]]