Difficulty recording live streams.

[vlc recordist]

Used to be able to open a stream like the live streams for VirtualRailfan and simply click the record button. Now, all I get is audio, the video will not record. I can record the video on full screen desktop but I still have to (try and) sync the audio and video. Pain in the axx. Anyone have any ideas? I'm on Win10 using Firefox. Any help would be greatly appreciated.