I meant April 21st and 22nd , 2016. Sorry
I've been going back over the discovery documents and there were a few videos listed. I do recall AC saying in her opening statement that the Wagners took both their murder truck and Chris Sr's truck over to Kenny's property that night. She mentioned both vehicles were caught on video. They also mentioned Kenny having a trail cam they retrieved.
Perhaps the earlier video DeWine mentioned was the one alluded to at one of the two locations along the back road between UHR and Kenneth's place on Left Fork. That was a church & cemetery and a house on the corner of UHR and 722. Just a guess.