
Case study
Expertise France
A five-location broadcast shoot for Expertise France's TV series "Rendez-Vous de l'Expertise" — three days across Mexico City, blending in-person interviews, outdoor segments and Zoom-connected international guests into one seamless program.
Introduction
This production was delivered as Castelein AV — the same team that now operates internationally as First Impact.
Expertise France produces "Rendez-Vous de l'Expertise," a broadcast series built around real conversations with specialists in the field. For an episode on decent work ("Trabajo Digno"), the production moved across five very different Mexico City locations over three shooting days: the French Ambassador's residence, a studio session with regional social-security specialists, a muralist's work in La Magdalena Contreras, an outdoor interview in Coyoacán's Jardín Hidalgo, and a round-table discussion connecting in-person panelists with international experts joining by Zoom.
Each location came with its own light, its own acoustics, and its own constraints — and none of it could be reshot. The final program needed to read as one continuous broadcast, not five separate shoots stitched together after the fact.
Objective
First Impact was brought in to deliver one broadcast-grade program out of six segments shot across five locations in three days — with no visible seam between a diplomatic residence, a studio, a mural wall, an open-air garden, and a Zoom call. That meant matching color and camera treatment across wildly different light sources and ceilings, making remote Zoom guests read as full participants rather than a video-call window cut into the program, and holding clean, intelligible audio through open-air segments in Coyoacán and La Magdalena Contreras where nothing about the acoustic environment was controllable.
The brief left no room for a second attempt: six segments, one chance each. Institutional branding, lower thirds and identifiers had to match Expertise France's own standards throughout, and the final deliverable was a fully mastered program file — not raw footage handed off for someone else to finish.
Scope
What had to hold
Visual Continuity
Five locations, five different light sources and ceiling heights — matched color temperature and depth of field so no cut breaks the program's look.
Seamless Hybrid Participation
Remote guests joining by Zoom had to read identically to in-person panelists — framing, audio level and latency all invisible on the final cut.
Open-Air Audio Control
Exterior segments in Coyoacán and La Magdalena Contreras with wind, ambient noise and no acoustic treatment — held to the same clarity as the interior segments.
No Second Take
A six-segment shoot across five locations with no option to return to the same conditions — every setup had to work the first time.
Institutional Graphics
Branding, lower thirds and identifiers built and applied live, matched to Expertise France's own institutional standards.
Mastered Delivery
A finished, broadcast-ready program file on handover — not rushes. Post-production was outside the brief.
Solution Implemented
How it was produced
Multi-Camera Broadcast Package
A Sony FX6 full-frame camera led the coverage, backed by a Sony FR7 PTZ for remote angles, a Sony PXW-Z190 and Panasonic AG-CX350 for secondary coverage, and a Flycam 5500 stabilizer for the moving segments.
Live Switching with Triple Record
A Blackmagic ATEM Television Studio Pro 4K handled live switching, with Blackmagic HyperDeck Studio HD Plus units recording ISO and program feeds at three points in the signal chain — insurance against an unrepeatable shoot.
Zoom Built Into the Signal Chain
Remote participants joined through Zoom Webinar routed directly into the live production, not bridged in as an afterthought — the same treatment as any in-person source.
Graphics on Barco and Resolume
A Barco S3 processor with EC-30 control and a Resolume Arena media server carried branding, lower thirds and identifiers, updated live without touching the camera feeds.
Full Audio Chain, Every Location
An Allen & Heath SQ5 console anchored the mix, with six Shure SLXD and two DJI lavalier wireless systems for the talent, Sennheiser in-ear monitoring, JBL monitors, and a full Reaper multitrack capture running at every location.
Lighting Built for Portability
Eight Elation KL Panel luminaires, run from a High End Systems Hedgehog 4 console, gave consistent, controllable light across locations that ranged from a formal residence to an open-air garden.
Video
Watch the Video
Technical Equipment
What we ran it on
Audio Equipment
- Mixing console
- Allen & Heath SQ5
- Wireless microphone systems
- 6× Shure SLXD
- Lavalier wireless systems
- 2× DJI
- In-ear monitoring
- Sennheiser Series 2000
- Monitor speakers
- JBL
- Multitrack recording
- Reaper
Lighting Equipment
- LED panel luminaires
- 8× Elation KL Panel
- Lighting control console
- High End Systems Hedgehog 4
Video Equipment
- Primary camera (full-frame)
- Sony FX6
- Remote PTZ camera
- Sony FR7
- Secondary camera
- Sony PXW-Z190
- Secondary camera
- Panasonic AG-CX350
- Camera stabilizer
- Flycam 5500
- Live switcher
- Blackmagic ATEM Television Studio Pro 4K
- ISO and program recording
- Blackmagic HyperDeck Studio HD Plus
- Graphics processor
- Barco S3 + EC-30
- Media server
- Resolume Arena
Other Equipment
- Hybrid platform
- Zoom Webinar
Results
What it delivered
Six Segments, One Program
A complete multi-location broadcast delivered across five Mexico City locations over three days, from the Ambassador's residence to a garden in Coyoacán.
Hybrid Guests, Invisible Seam
International specialists joining by Zoom were cut into the round table with no visible technical gap between remote and in-person participants.
Broadcast-Grade, Every Segment
Cinematic exterior footage and studio-quality debate segments delivered editorial-ready, with no re-shoot required at any location.
Consistent Audio Throughout
Clean, intelligible audio held across open-air exteriors, panel discussions and one-on-one interviews alike — including the outdoor garden segment.
Delivered Ready to Air
A fully mastered program file handed over on schedule, requiring no additional post-production before digital distribution.
Value Added
Beyond the brief
One Team, Five Locations
Crew and equipment repositioned across Mexico City on a fixed three-day schedule, coordinated as a single production rather than five separate bookings.
Single Technical Direction
Video, audio, lighting, graphics and remote connectivity all ran under one technical direction — no separate vendors to reconcile after the fact.
Hybrid Built Into the Broadcast, Not Bolted On
Zoom participation was designed into the signal chain from the start, not patched in as a separate system on the day.
Validated to Institutional Standard
The finished program met Expertise France's own editorial and broadcast standards on first delivery.
One Master, Multiple Uses
ISO recordings and a mastered program file left the client with material suited to more than one downstream distribution channel.
Gallery
From the production

Broadcast TV Series (Multi-Location)
How this was produced

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