how to get locator of dynamic ad insertion(DAI) point of seekbar of video playing in mobile

I want to test that dynamic ad insertion(DAI) has appeared on screen while playing the video on mobile. I am getting the complete locator of seekbar but I want to get the locator of DAI point in seekbar. Can you suggest me the way to get the locator or any testing tool to get the locator. Any help would be appreciated. Thanks in advance.