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Interactive Media Ads (IMA) SDK for iOS.
The IMA SDK must be able to tell when ads are visible to users so that it can
send the correct signals back to the ad server. IMA uses
Active View reporting
to measure the viewability of ads. This guide explains how Active View
reporting works with IMA, as well as how to verify that the SDK is able to
correctly capture viewability signals.
The publisher passes the IMAAdDisplayContainer to the
IMAAdsRequest
constructor.
Active View receives measurements on the view.
Verifying that the SDK can measure ad viewability
To check whether that the SDK is able to capture viewability signals, look for
network requests sent to https://pagead2.googlesyndication.com/pcs/activeview
and check for the mtos parameter. For more information, see
Monitor Active View measurement.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThe IMA SDK uses Active View reporting to measure ad viewability, ensuring ads are visible to users before sending signals to the ad server.\u003c/p\u003e\n"],["\u003cp\u003ePublishers initialize the process by linking their ad display container and ad request, enabling Active View to measure the view.\u003c/p\u003e\n"],["\u003cp\u003eViewability can be verified by monitoring HTTP requests for \u003ccode\u003eactive_view_vide_measurable_impression\u003c/code\u003e and the \u003ccode\u003emtos\u003c/code\u003e parameter.\u003c/p\u003e\n"],["\u003cp\u003eCustom video display implementations may require layout adjustments to ensure accurate viewability metrics, with support available through the IMA support forum.\u003c/p\u003e\n"]]],[],null,["The IMA SDK must be able to tell when ads are visible to users so that it can\nsend the correct signals back to the ad server. IMA uses\n[Active View reporting](//support.google.com/admanager/answer/3154105)\nto measure the viewability of ads. This guide explains how Active View\nreporting works with IMA, as well as how to verify that the SDK is able to\ncorrectly capture viewability signals.\n\nHow Active View reporting works with the IMA SDK\n\n1. The publisher initializes the\n [`IMAAdDisplayContainer`](/interactive-media-ads/docs/sdks/ios/client-side/reference/Classes/IMAAdDisplayContainer)\n with a view.\n\n2. The publisher passes the `IMAAdDisplayContainer` to the\n [`IMAAdsRequest`](/interactive-media-ads/docs/sdks/ios/client-side/reference/Classes/IMAAdsRequest)\n constructor.\n\n3. Active View receives measurements on the view.\n\nVerifying that the SDK can measure ad viewability\n\nTo check whether that the SDK is able to capture viewability signals, look for\nnetwork requests sent to `https://pagead2.googlesyndication.com/pcs/activeview`\nand check for the `mtos` parameter. For more information, see\n[Monitor Active View measurement](//support.google.com/admanager/answer/6123557).\n| **Note:** If you use your own video display and maintain full control over playback, you might need to modify your layout to ensure that the necessary metrics are being correctly returned. For additional assitance, reach out to us on the [IMA support forum](//groups.google.com/g/ima-sdk)."]]