Interesting ceremony...
I think it was a nice idea in principle (especially the athletes travelling along the river), but it didn't work particularly well in practice. Especially for the people actually there, most of them will have been relying on the big screens along the river to see what was actually going on - as mentioned upthread, it was definitely designed with a television audience in mind. The weather probably didn't help.
From a broadcast point of view, I was quite impressed overall, especially as the event was unrehearsed - apart from I think two brief signal dropouts, there were no major/obvious technical issues. What I would have liked to see, though, was a better attempt at wiping the rain off the waterproof camera covers! For an event with this profile, having half the shot obscured by water droplets isn't really acceptable. Naturally you can't do a perfect job when it's raining that much, but to be perfectly honest the rain droplets made it look pretty amateurish.
My favourite bit (which will come as no surprise to anyone who knows me) was the light display on the Eiffel tower. I would love to be able to play with that sort of lighting! A somewhat unique canvas to turn into a brilliant display. This particular bit was enhanced by the rain, which acts like haze (if anything was better) and really accentuates the light beams.
[nerdy technical bit] I'm pretty confident the bright beam lights on the tower were laser-based, rather than LED, probably something like this:
https://www.claypaky.it/products/skylos/, although they could have been less exciting discharge fixtures. I'll see if I can find out a bit more about the lighting used. They also seemed to have hired in the entire French stock of these
https://www.chauvetprofessional.com/products/color-strike-m/ (or similar fixtures) for the path between the Louvre and the balloon/cauldron.
~~~
Anyway, I happened to have most of a day in Paris two weeks ago, at the end of an Interrail trip. I was only there because there were no Eurostar Interrail reservations available from Brussels (presumably due to the football?), and originally I was intending to spend the day on any loco-hauled trains I could find after a speed walk past a few of the main sights, like I normally do in new cities (because who would want to actually spend time looking round?!

). However, I very quickly discovered that they were in the middle of building the infrastructure for the opening ceremony, and since I spend far too much of my "spare" time doing theatre/events tech stuff, this was naturally very interesting. It was also a Sunday, so basically no loco-hauled trains around (except Intercites, which need a reservation...), so I decided to spend the day looking around the city instead (massive waste of the final day of my Interrail pass, but oh well!

). Subsequently I discovered that it was not only Bastille Day (which would explain the military flypast I saw, although unfortunately I missed the parade, arriving on Avenue des Champs-Elysees shortly after it finished), but also the first day of the Olympic torch being carried round the city, so certainly one of the more interesting days to be walking around Paris!
Here are some behind-the-scenes shots (in no particular order) of preparations for the opening ceremony and other temporary competition areas, focussing on the bits that I find interesting (like diesel generators and stacks of power distribution kit...

). Maybe someone else will find it interesting too... (incidentally, this seems to be a recurring theme for me, having previously supplied similar pictures for the Birmingham Commonwealth Games. I wonder what the next event I accidentally end up coming across will be?!)


There were two main speaker stacks lining the river. The sort on the left was the most common, just 3 point source speakers suspended off a truss upright bolted to a concrete block. Nice and simple; I like the very advanced use of a plank of wood to make the block roughly level. Most of the river was lined with these. The type on the right was found much closer to the Eiffel tower, and is a much more interesting and advanced setup. First, there's a stack of line array pointing directly at the crowd, flanked by point source speakers at about 45degrees to provide more horizontal coverage. Below this is a line of 3 subwoofers, which appears to be set up for cardioid operation (ie: making the majority of the low frequency sound waves emanate towards the crowd/away from the river where it will benefit no-one. Lower frequencies are generally omni-directional (sort of, this is a bit simplistic but will do for now), so making them cardioid reduces volume where you don't want it to be, and increases it where you do. This is done by turning one of the subwoofers the "wrong" way and sending a slightly different signal to it, in order to cause controlled interference in the sound waves, to destructively interfere on the "quiet" side and constructively interfere on the "loud" side.) Below the scaffold tower is the amp rack for the stack, and this particular location has a power distro box to the let of the amp rack as well.

There were several temporary radio frequency masts along the river. I'm not sure if these were to allow the mobile networks to be able to cope with significantly increased traffic (some were branded with mobile network logos), or were for all the radio traffic required for the broadcast and technical aspects of the event (I would love to see the frequency allocation map for this!), but they certainly looked beefy.


Temporary power outside the "stadium" that's been built at the Place de Concorde.

Video wall at the "stadium" built on the Esplanade des Invalides. This one is notable from my perspective, simply because I dread to think how much effort was required to get all those flight cases up to the top of the scaffold tower! This is at the top of the temporary stands, so probably getting on for 10m above the ground...


Some lighting now! Left picture is right next to the Eiffel tower (as is hopefully obvious...

). The rectangular fixtures to the left are for the colour wash across the tower (eg: "look, the Eiffel tower is blue!"), whilst the row of pointy moving heads centre and right are the "laser beams" that cut through the sky. Right picture is a view across the bridge to the Trocadero. Notably, I couldn't see the moving heads you can see on top of flightcases in use during the ceremony (and I was looking out for them as well!), all the light sources looked like they came from either side of the river, not the bridge (although that may just be the camera angles). Interestingly, the line array (speakers) above the stands seem to be at least two different types, although it's hard to tell from the picture: the hang at the far left of the truss looks to be "traditional" segment line array, whereas the two hangs further to the left look more like the new l'Accoustics (yes, it's a French company) L2 speakers. However, it must be said that stadium-size line array is definitely beyond the kit I normally use, so I could be very wrong!

Here's some truss being attached to a building. I can't remember what particular building this is, but it shows the sort of thing they were doing to buildings along the river
That's it for the moment, hopefully at least one person has found this mildly interesting!

. I have quite a few more picture if anyone is interested, but mainly they're of things like a crate of chunky power cable, or the connectors on the radio towers...