I have to agree with the other two reviewers. Gojira plays awesome as usual, Joe Duplantier's vocals are solid, Mario's drumming is impressive and the guitars and bass are flawless, the only problem I have with this set is the Garorock concert which is supposed to be the main feature of the set.
The audio mix is acceptable, perhaps the vocals are a little louder, the quality of the video is nice and takes advantage of the Blu Ray capabilities, although it is obvious that this was shot with digital video, not film. My main complain is this: If you are a musician or pretend to play an instrument like me or simply you have seen too many concerts, it will be obvious to you that the director of this video, has no clue about how instruments are played or how to direct a concert. The video has simply way too many special effects and cuts to the audience that are very distracting and ruin the flow of the songs. (Remember Rage Against the Machine - Battle of Mexico City?) For instance, Mario Duplantier is about to do one of his incredible drum rolls which you anxiously anticipate, but the director will add a special effect in the middle which will prevent you from watching in awe or he will simply just cut the shot in the middle of the roll to give you a extreme close up of an ugly guy in the audience. Same goes for the guitar solos, if he has a close up on a guitar, he will ruin it by cutting the sequence to some unimportant detail or abuse one more time of the effects.
The Bordeaux show appears to be 16mm film and it was obviously shot by a guy that knows music and has experience directing concerts. The audio is nice and clean, however the problem with this video is that the lighting is not the best due to the film quality and although it is way more gratifying than that Garorock video and nicely shot, it doesn't take full advantage of the Blu Ray format.
The set if definitely worth buying and the concert CD is a nice bonus, however this could have been so much more had the label chosen a qualified director for the Garorock video, aka the guy that shot the Bordeaux concert.