Hat tip to Adept2u for the too little noticed diary that broke the video down by frames.
This is trouble.
This is pulled from TEPCO's own cam and recorded today.
Much of the focus of recent discussion about Fukushima has been on the growing problem of highly radioactive waste water from the jury rigged cooling efforts and whether a French designed reprocessing plant can be completed in time to avoid spillage of these wastes into the Pacific. Atmospheric discharges haven't been in evidence recently and are a whole other kettle of dangerous fish.
Something very dangerous is happening.
Here is a link to the video.