After the History Channel stopped doing real history documentaries and started focussing pseudo-scientific studies (UFOs and the like) as well as pseudo documentaries (Pawn Stars) which they achieve great successes with, they also tried out (mini) series. The Drama series Vikings is one of them. The first series was immediately able to win the audience over.

In the USA the channel aired censored versions of the episodes which often used alternate scenes. Thus there is no nudity, and some of the violence during the battles was toned down. However, the latter scenes are already quite graphic and only slightly censored here and there. In France they decided to air the completely uncensored version of the series.

The US Blu-Ray is uncensored but also offers a few additions to the plot. Whether or not these scenes were cut out for time reasons (so that the episodes are roughly 43 minutes long) could not be found out. We also do not know whether or not the scenes were included in the French broadcast. Thus this might be extended material which was saved exclusively for the Blu-Ray release.

The seventh episode on the US Blu-ray is overall 2 seconds longer than the TV Version.

21:22
Extended shot of the pig's head. In the TV Version, there's a commercial break here.
3 sec

37:07
During the fight, the sword gets pulled out of the face.
2 sec

37:42
A hostile gets is throat slit by a shieldmaiden's sword. Only the Blu-ray Version reveals the gory details.
no difference

Blu-ray	TV

39:47
Another commercial breal in the TV-Version. That's why there's a short shot of the camp for continuity reasons.
TV + 3 sec