I have the same issue.
16.11.18 07.00.43 <--> 16.11.18 07.06.52 jdlog://5159564433151/

I guess nicovideo website changed the way of storing and streaming videos since last couple of weeks. I used to be able to snooper the original video link but now I can't. They now use m3u8 format to stream the videos.