They really would have to overhaul the SD playback in order to get this to work.In it’s current incarnation, Even locally there is no way to see previews of the recorded events. They have them for the cloud version but not the SD card version. I Don’t think that they have to scan the SD card, just do what they’re doing now and instead of the video, just have an image which is stored on the cloud, and then use that time stamp to search locally.