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 ninth episode on the US Blu-ray is overall 73 seconds longer than the TV Version.

10:46
The interior shot of Jarl Borg's big hall with Rollo in the background starts earlier for continuity reasons (there was a commercial break in the TV Version).
TV +4.5 sec

12:35
Jarl Borg about his brother he had burned when he poisoned his wife: "He laughed while he was burning."
3.5 sec

12:39
Same as above, due to continuity reasons.
2.5 sec

13:58
Shot of Aslaug from a further distance plus she's naked. The other one is closer but only shows her head.
BD: 4.5 sec | TV: 4 sec

Blu-ray	TV

14:05
Same here.
BD: 3.5 sec | TV: 4.5 sec

Blu-ray	TV

14:12
And here.
BD: 3.5 sec | TV: 2.5 sec

Blu-ray	TV

14:22
And here.
BD: 2.5 sec | TV: 2 sec

Blu-ray	TV

24:40
Floki's conversation with King Horik is quite different. In the Blu-ray Version, Horik flatters Floki with a short comment about Loki, "a distant ancestor" of Floki. Horik also mentions someone was still at Greenland taking care of his issues in case Ragnar would fail to seal the deal with Jarl about the land in question.
BD: 51 sec | TV: 30 sec

Blu-ray	TV

27:54
Extended shot of the ash that's supposed to be Yggdrasil upholding heaven.
3.5 sec

32:15
Shot of the goat being taken to Lagertha who is going to instantaneously sacrifice it in order to stop the deaths in the village.
35 sec

33:37
Extended shot of Ragnar by the river.
11 sec