Which Patna venues do you work at?

Bapu Sabhagar (A few thousand seated in the state convention auditorium); Gandhi Maidan (Lakh-plus on the central maidan); Hotel Maurya (Several hundred across banquet halls on South Gandhi Maidan Road). A modern state facility near Gandhi Maidan, which means security cordons and route restrictions on event days and a build window that has to be cleared with the district administration as much as with the venue. We also cover hotels, farmhouses and open grounds across Boring Road, Kankarbagh, Fraser Road, Bailey Road, Rajendra Nagar.

Can you map onto a heritage monument?

Technically yes, and we do. Practically it requires permission from the site authority, a no-touch approach where nothing is fixed to the structure, projectors positioned on ballasted free-standing towers, and usually restrictions on show hours and sound level. That permission file is the long lead item, not the content.

Why does alignment have to happen at night?

Because you cannot see the projected image well enough to warp it in daylight. A multi-projector façade takes four to eight hours of night work to warp, blend and mask properly, which is why we ask for two nights before the technical rehearsal rather than one.

What happens if it rains?

Projectors sit in IP-rated enclosures with filtered cooling, so light rain is survivable. Heavy rain reduces the visible image regardless of brightness because the air itself scatters light, and standing water near towers and distribution is a safety stop. We agree a weather call point with the client before the run.

Can the same content be reused on another building?

Only partially. Abstract passages and particle layers can be re-rendered onto new geometry, but anything that plays with the architecture — windows opening, walls crumbling, a cornice animating — is specific to that building's UV map. Expect a re-render and a new alignment, which is roughly 40 to 60 per cent of a fresh build.

Spectacle · Patna, Bihar

3D Projection Mapping in Patna

In Patna, political rallies and government public functions set the standard everything else is measured against. Our 3D projection mapping is specified to clear that bar at Bapu Sabhagar and anywhere else in the city.

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Rated 4.9/5 by 600+ event planners and brands

Lead time: From 10 weeks
Peak season: Oct–Feb
Coverage: Patna & Bihar

Key takeaway

3D Projection Mapping in Patna is quoted against your guest count, venue and run of show. A price-sensitive market with aggressive local competition on basic sound-and-light, so the case for an engineered rig has to be made on reliability, crowd safety and intelligibility rather than on a specification sheet. Travel and accommodation loading from Kolkata is significant and best quoted openly. Chhath Puja in October or November is the defining Bihar event — ghats across the city host lakhs of devotees, the administration's own arrangements take absolute precedence, and every local sound system, light tower and generator is committed. Sonepur Mela follows in November nearby, the November-December and February muhurats fill the wedding inventory, and Bihar Diwas in March brings state-scale public events — so we quote within 24 hours and hold dates first-come.

3D Projection Mapping for Patna’s biggest events

Projection mapping starts with a survey, not a storyboard. We photogrammetry-scan or LiDAR-measure the surface — a façade, a stage set, a car, a cake — and build a 3D model that matches the real object within a few centimetres. The projectors are then positioned virtually against that model to check throw ratio, keystone, shadowing from balconies or trees, and whether any part of the surface falls outside the beam. Only once the projector positions are fixed does content production begin, because a mapped animation is authored against a specific camera position and cannot simply be moved later.

The surface is the instrument here — its material, reflectance, depth and the audience's viewing axis decide projector count, angles and whether the illusion reads at all. In Patna that plays out at venues like Bapu Sabhagar, Gandhi Maidan, Hotel Maurya, and across Boring Road, Kankarbagh, Fraser Road, Bailey Road.

Brightness is the engineering constraint that decides the budget. Perceived image brightness depends on lumens, surface area, the reflectance of the material and the ambient light falling on it. Stone and painted plaster reflect perhaps 20 to 35 per cent of what hits them; dark stone far less. A heritage façade of 400 square metres with street lighting nearby can need 100,000 lumens or more in total, which is three or four stacked 30K-class laser projectors per angle. Laser phosphor sources are the standard now because they hold brightness and colour across a run, start instantly and tolerate the dust and heat of an outdoor build far better than lamps.

What’s included

20K–40K lumen laser projectors
Custom 3D content & storyboards
Edge blending & warping (Pixera, Disguise)
Heritage façades, cars, cakes & stages

Equipment we carry

BarcoChristiePanasonicEpsondisguiseAV Stumpfl PixeraDataton WatchoutResolume

Why Patna chooses Prime AV

Crews and trucks positioned for fast load-in at Hotel Maurya and venues in Fraser Road and Bailey Road.
IP-rated enclosures with filtered forced-air cooling, filters changed daily on a multi-night run, and internal temperature logged during rehearsal.
Master render of the show content at delivery resolution
Working knowledge of Bihar venue rules, power sanctions and permission timelines.

Local conditions

Producing 3D projection mapping in Patna

Weather & the rig

Mapping is defeated by air as much as by rain — haze, dust and humidity scatter the beam and soften a blend, so brightness headroom is specified against local conditions. Beside the Ganga on the flood plain, Patna combines heat with humidity in a way that is harder on amplifier racks than dry 45°C elsewhere — May and June exceed 43°C with high moisture, so forced-air cooling and headroom in reserve are both required. Winter brings thick, persistent river fog through December and January that kills projection throw and makes an overnight truck arrival from Delhi unreliable enough to need a day of margin. Jun–Sep monsoon with genuine Ganga flood risk in the diara and the low-lying wards; Dec–Jan fog for any design that depends on projection.

Power & redundancy

Stacked 30K-class projectors each draw several kilowatts continuously for the whole run, so projection needs a dedicated, stable, uninterrupted supply rather than a share of the event distribution. Bihar's grid has improved substantially over the past decade, but Patna still sees voltage fluctuation and short interruptions, so DG is not the backup here — it is the primary design assumption, typically a synchronised pair with automatic changeover holding everything show-critical. BSPCB acoustic enclosure rules apply and silent sets are expected along the residential stretches of Boring Road and Bailey Road.

Permits & noise rules

Mapping a building means permission to light it, towers on public or heritage ground, and usually a negotiated blackout of nearby street lighting for the show window. Permission for a large gathering at Gandhi Maidan comes from the District Magistrate's office rather than the municipal body, which is a different and slower route than most cities and is the single most common planning error outsiders make here. Patna Municipal Corporation handles ground and structure permission elsewhere, the Patna Police license loudspeakers, and BSPCB applies the noise standards with the 10pm cut. Jay Prakash Narayan Airport sits unusually close to the centre with a short runway and a difficult approach, so the drone restriction over central Patna is wide and firmly policed.

Load-in & access

Projector towers, ballast and enclosures have to be placed on a precise viewing axis that is often a road or a public plaza, so access and closures drive the build plan. Trucks reach Patna on NH-19 and NH-31, and the Mahatma Gandhi Setu over the Ganga has long been a bottleneck, so arrival times are planned with delay assumed rather than hoped against. Inside the city, Ashok Rajpath and the old quarter towards Patna City are narrow and congested with small vehicles only. Gandhi Maidan itself admits vehicles through designated gates only, on administration approval, which sets the whole build sequence.

Season & booking

Chhath Puja in October or November is the defining Bihar event — ghats across the city host lakhs of devotees, the administration's own arrangements take absolute precedence, and every local sound system, light tower and generator is committed. Sonepur Mela follows in November nearby, the November-December and February muhurats fill the wedding inventory, and Bihar Diwas in March brings state-scale public events. Peak demand runs Oct–Feb.

Crew & dispatch

Trucked from Kolkata in ten to twelve hours on NH-19, which is the better origin for most Patna work, with Delhi NCR at sixteen to eighteen hours as the alternative; local labour and DG hired in Patna. Load-in support covers Fraser Road, Bailey Road and the rest of the city.

What it costs here

A price-sensitive market with aggressive local competition on basic sound-and-light, so the case for an engineered rig has to be made on reliability, crowd safety and intelligibility rather than on a specification sheet. Travel and accommodation loading from Kolkata is significant and best quoted openly.

Local expectations

Public and political events dominate and they are judged on one thing: whether the speech is clearly intelligible 300 metres back. That makes a distributed delay-tower design, time-aligned and level-matched, worth more than any lighting investment. Bhojpuri and Maithili performers draw very large crowds with high SPL expectations, and weddings run long, multi-day and extended-family-scaled with a baraat procession that needs its own mobile power and PA.

Specification

3D Projection Mapping: technical specification

Typical 3D projection mapping specification supplied in Patna.
Specification	Detail
Projector class	20,000 – 40,000 ANSI lumens, laser phosphor or RGB laser, 3-chip DLP
Surface reflectance assumption	20 – 35 per cent for stone and painted plaster, lower for dark granite
Typical façade budget	Approximately 250 – 400 lumens per square metre of lit surface, ambient dependent
Blend overlap	10 – 20 per cent soft-edge between adjacent projectors
Media servers	disguise gx/vx, AV Stumpfl Pixera, Dataton Watchout
Survey method	Photogrammetry or LiDAR scan to a 3D model accurate within a few centimetres
Alignment window	Night-time only, four to eight hours for a multi-projector façade
Content pipeline	Cinema 4D or Blender to UV-mapped render, delivered as image sequence
Show length	3 – 12 minutes, usually looped with timecoded audio
Weather protection	IP-rated projector enclosures with filtered forced-air cooling for outdoor runs

On site, the work is warping, blending and masking. Each projector's output is warped onto the surface geometry using a media server — disguise, Pixera or Watchout — with overlap regions of 10 to 20 per cent soft-edge blended so no seam is visible. Masks cut the beam off windows, balconies and anything that must stay dark. Alignment is done at night with the actual content and takes hours, not minutes, and it must be re-checked if a projector is bumped or a tower settles. We lock projector positions with ballasted towers and mark every position so a knocked unit can be returned to alignment rather than re-mapped.

Sizing

What size rig does your event actually need?

Scale	Guests	Recommended setup
Single object	50 – 300	One object, 2 x 20K projectors, 10 – 30 sq m, 60 – 90 seconds of content
Stage set	300 – 1,500	Set faces plus floor, 4 x 20K, 50 – 120 sq m, blended and masked to scenic edges
Hotel façade	500 – 2,000	6 x 30K from two angles, 250 – 400 sq m, three-minute show, ballasted towers
Palace or fort wall	2,000 – 10,000	10 – 14 x 30K from three angles, 500 – 800 sq m, five-minute narrative, multi-night
Monument spectacle	10,000+	20+ projectors, 1,000 sq m+, redundant servers, nightly alignment, licensed site

Scope

3D Projection Mapping scope tiers in Patna

Object & Stage Mapping

Product reveals, car launches, cakes and set pieces up to 60 sq m

3D scan of the object and a matched virtual projector study
Two to four 20K-class projectors with blending and masking
60 to 120 seconds of bespoke animation to the reveal beat
Pixera or Watchout playback with timecoded audio
Mapping technician, media server operator and a content artist

Most booked

Façade Show

Heritage buildings, hotel and palace façades, 200 – 600 sq m

Photogrammetry survey and full geometry model of the building
Six to twelve 30K-class laser projectors on ballasted towers
Three to six minutes of custom 3D content with sound design
Night alignment across multiple sessions with masking of windows
Projection crew, riggers, server operator and content studio time

Large-Scale Spectacle

City festivals, monuments and multi-surface installations, 800 sq m and above

Multi-angle design covering several surfaces as one canvas
Twenty-plus projectors with redundant servers and hot spares
Full narrative content production with score and voiceover
Weather-rated enclosures and a multi-night run with nightly re-alignment
Full crew across survey, build, alignment, show run and strike

Venues

Where we work in Patna

Venue	Capacity	Production note
Bapu Sabhagar	A few thousand seated in the state convention auditorium	A modern state facility near Gandhi Maidan, which means security cordons and route restrictions on event days and a build window that has to be cleared with the district administration as much as with the venue.
Gandhi Maidan	Lakh-plus on the central maidan	Every element is temporary: all power generated, delay towers distributed across the ground because a stage-centred PA cannot carry 400m, and the stage structure itself signed off by the district administration before anything is built.
Hotel Maurya	Several hundred across banquet halls on South Gandhi Maidan Road	The city's long-established banqueting address, with a constrained service approach in a congested central location, so trucks are unloaded in sequence overnight rather than parked.
Shri Krishna Memorial Hall	Around 1,000-plus seated	A government auditorium with fixed seating, modest house infrastructure and departmental approvals, so a visiting rig brings its own power distribution as a matter of course.
Bihar Museum auditorium	Around 300 seated	A newer, well-specified space with institutional rules on load-in routes and protection of the building's finishes, which rules out the usual trolley-and-tape approach.

Crew

Who turns up on show day

Mapping technician
Builds the geometry model, warps each projector to the surface and maintains alignment across the run.
Media server operator
Runs disguise, Pixera or Watchout, holds the show timeline to timecode and keeps a mirrored backup server.
Content artist
Authors the animation against the UV-mapped geometry so it reads correctly from the audience viewing position.
Projector technician
Rigs, powers, focuses and cools each unit, monitors lamp or laser hours and swaps a failed unit without losing alignment.
Rigger
Builds and ballasts the projector towers, secures positions against wind and marks them for repeatable realignment.

What you receive

3D geometry model of the mapped surface with the UV layout
Projector placement study with throw, brightness and coverage calculations
Master render of the show content at delivery resolution
Media server show file with timecode cues and a mirrored backup
Masking map showing every excluded window, balcony and dark zone
Audio stem and mixed show track used for synchronisation
Full-length video capture of the show as performed from the audience position

Timeline

From enquiry to load-out

T-10 weeks
Site survey and scan
Photogrammetry or LiDAR capture of the surface, plus ambient light readings taken at the intended show hour.
T-8 weeks
Projector study and sign-off
Virtual projector placement, brightness calculation and tower positions agreed with the venue and the authority.
T-7 to T-2 weeks
Content production
Storyboard, animatic review, then full 3D render against the UV map with sound design and score.
Show day −3 to −2
Build and first alignment
Towers built and ballasted, projectors rigged, first night of warping, blending and masking.
Show day −1
Technical rehearsal
Full show run at the actual hour, content reviewed from the audience position, and corrections rendered overnight.
Show day to +2 days
Show run and strike
Nightly runs with a pre-show alignment check, then strike with projectors cased and towers de-ballasted.

Risk control

What goes wrong, and how we stop it

What can go wrong

How we prevent it

What can go wrong
Dust and heat in an outdoor enclosure cause thermal shutdown mid-show.
How we prevent it
IP-rated enclosures with filtered forced-air cooling, filters changed daily on a multi-night run, and internal temperature logged during rehearsal.
What can go wrong
Brightness is calculated from lumens alone and the dark stone façade swallows the image.
How we prevent it
The calculation includes measured surface reflectance, not an assumed figure, and a test projection on the actual material is done at survey wherever access allows.
What can go wrong
The audience ends up standing off the designed viewing axis and the 3D illusion collapses.
How we prevent it
The viewing position is part of the design and is barricaded or seated on site, with content checked from the extreme left and right of the intended crowd area.
What can go wrong
Street lighting or a neighbouring building's floodlights wash the façade and the show looks grey.
How we prevent it
Ambient readings are taken at the show hour during the survey, and the blackout of specific street and site lights is negotiated and written into the permission before content is budgeted.

Honest comparison

Is this the right choice for your event?

Architectural lighting instead of mapping
Our verdict
For a façade that only needs to look beautiful, uplighting and colour washes cost a fraction, go up in a day and work in light rain. Mapping is for when the building has to perform rather than just glow.
LED wall instead of projection mapping
Our verdict
LED beats projection on brightness, on reliability and in any lit environment. But it cannot map onto an existing building, a car or a cake, and at 400 square metres of heritage façade it is simply unaffordable. If the surface is the story, map it; if you need a rectangle that works in daylight, use LED.
Stock content instead of bespoke animation
Our verdict
Stock loops and generative visuals genuinely work for ambient architectural washes and for leaner budgets. They cannot do a reveal, a narrative or anything that respects the building's actual architecture, because they are not authored to your geometry.

Demand

What Patna books most

Patna event mix

Political rallies and government public functions
Large multi-day weddings and receptions
Education and coaching-sector events and seminars
Religious and cultural mass gatherings
Trade exhibitions and distributor meets
Institutional and academic conferences

Ideal for

Events we power with 3D projection mapping in Patna

Product launches

Wedding façades

Brand & city festivals

Process

From brief to standing ovation

Brief & recce

We visit the venue, map power and rigging, and understand your show flow.

Design & quote

CAD plans, 3D previews and an itemised quote within 24 hours.

Build & rehearse

Load-in, system tuning, content checks and full technical rehearsal.

Show & strike

Show-caller-led execution, then a quick, clean load-out.

FAQ