[null,null,["最后更新时间 (UTC):2025-02-28。"],[[["The IMA SDK uses Active View reporting to measure ad viewability and send signals to the ad server."],["Publishers designate a container element for Active View to measure, ensuring it's viewable when requesting ads."],["Verifying viewability involves checking for specific parameters in HTTP requests, indicating successful measurement."],["Custom video display setups might need layout adjustments for accurate viewability metrics, with support available via the IMA forum."]]],[]]