Atomos AtomX CAST 4 x HDMI Switching & Streaming Dock for Ninja

Multi-input switching. Made simple.
The AtomX CAST is a modular, multi-input HDMI switcher designed to turn your Ninja, Ninja Ultra, Ninja V or Ninja V+ into a compact, full-featured live production studio. Whether you’re streaming, presenting, or switching live to screen, CAST makes professional multi-cam workflows easy, affordable, and portable.

Four HDMI Inputs with Seamless Switching
With four HDMI inputs, AtomX CAST lets you connect up to four cameras, computers, gaming consoles, or other video sources. You can switch between them in real time using the integrated hardware buttons or via touchscreen when paired with a Ninja V or V+.

Broadcast-Quality Output
CAST delivers clean 1080p60 video with professional-grade switching transitions and graphics overlays. It outputs via HDMI or USB-C, allowing you to use it as a webcam source in conferencing platforms like Zoom or Teams, or as a live feed into streaming software like OBS and vMix.

Plug-and-Play USB Streaming
The USB-C connection functions as a UVC (USB Video Class) output, meaning it is instantly recognized as a webcam source on your computer without any drivers or configuration. Just plug it in and go live with broadcast-level quality from your multi-camera setup.

Modular Design for Ninja V and V+
The AtomX CAST docks directly to the Ninja V or V+ via the AtomX expansion port, creating an all-in-one device for monitoring, switching, recording, and streaming. When not in use for switching, the Ninja V/V+ operates as a standalone HDR monitor-recorder.

Multiview and Overlay Tools
Easily display multiview layouts and apply graphics overlays like logos, lower thirds, and titles—all customizable through AtomOS. Preview all inputs at once and switch seamlessly with complete confidence in your live program feed.

Who is it for?
AtomX CAST is built for content creators, live streamers, educators, and corporate presenters who want the flexibility of a multi-cam switcher without the bulk or complexity. Whether you’re running a stream from your home studio or producing a live event on the go, CAST makes professional switching simple and portable.

Key Features

• 4 x HDMI inputs with real-time switching
• HDMI and USB-C outputs for broadcast or webcam streaming
• Seamless integration with Ninja V and Ninja V+
• Plug-and-play UVC streaming over USB-C
• Multiview and program output display
• Support for graphics overlays and lower thirds
• Compact, modular design with hardware switching buttons
• Ideal for live streaming, events, corporate, education, and gaming

Note: Not compatible with Ninja TX and Ninja TX GO

Physical

• Dimensions (W x H x D mm): 129mm x 49mm x 160mm / 5.1" x 1.9" x 6.3" (without Ninja attached)
• Weight: 485 g / 1.06 lb (without Ninja attached)
• Mounting Points: Bottom: 1 x 1/4"20 or 3/8" with anti rotational points

Construction & Control

• Body: ABS Polycarbonate with Locking Arm for Ninja, Ninja Ultra, Ninja V, Ninja V+
• Cooling: Passively cooled
• Tally Light: Record Tally on Ninja Screen – Program & Preview Illumination on AtomX Cast Buttons
• Control Buttons: 4 x Input Switching Buttons & 4 x Function Buttons
• AtomXpansion slot: Connecting to Ninja, Ninja Ultra, Ninja V, Ninja V+ (No Module Passthrough)

Power

• Input Voltage: 6.2V to 16.8V
• DC-In Connector: Locking DC Jack (5.5mm OD & 2.1mm ID)
• D-Tap: Via optional D-Tap to DC-Barrel Cable

Video Input

• HDMI: 4 x HDMI (1.4b)
• Bit Depth: 8/10-Bit
• Video Chroma Subsampling: YCbCr 4:2:0 & 4:2:2

Video Output

• HDMI (on Cast): 1 x HDMI (1.4b) (Program Output only)
• HDMI (on Ninja): 1 x HDMI – Program, Preview, Multiview Output
• Video Chroma Subsampling: 4:2:2
• Bit Depth: 10-Bit

Web Streaming

• USB UVC: via USB-C

Audio In/Out

• Audio Quality: 24-Bit / 48kHz
• Audio Codec: PCM
• HDMI: 2ch 24-Bit, Input dependent
• Analog Audio in: 3.5mm Jack (on Ninja)
• Analog Audio Out / Headphone Jack: 3.5mm Jack (on Ninja)

Resolution & Frame Rates

• FHD 1920 x 1080 Progressive: up to 1080p60
• FHD 1920 x 1080 PsF: Not Supported
• FHD 1920 x 1080 Interlaced: Automatic Pulldown to Progressive
• 1280 x 720p: Not Supported
• SD PAL / NTSC: Not Supported

Recording Codecs (via Ninja)

• Apple ProRes: HQ, 422, LT (Program Recording only)
• Avid DNxHD: 220x, 220, 145, 36 (Program Recording only)
• Recording Functions
• Switched Program Recording: Supported (via Ninja)

Multi Input / Switching

• Multiple HDMI Input: up to 4 x HDMI up to 1080p60
• Multiview Display: Quad-Input-Display(via Ninja)
• Multiview Ouput: Supported (via Ninja's HDMI Output)
• Picture in Picture (PIP): Any Input over Any Input – 4 Postions & 2 Sizes
• Graphic Overlays: Upload custom 1920 x 1080 PNG graphics. Alpha transparency is supported. Can be used simultaneously with PiP.
• Media Pool Storage: Upload up to 8 PNG Graphics (via Ninja)
• Input Frame Rate Processing: Define fixed Program Frame Rate & Match other Inputs to it

Supported Media

• Maste Caddy I: Not Supported
• Master Caddy II: Supported
• Master Caddy III: Supported
• SSDmini: Supported (AtomX SSDmini Handle required)
• File System: exFAT (via Ninja)

• 1 x AtomX CAST
• 1 x USB-C Cable
• 1 x SSDmini Handle Adapter
• Warranty: Standard 1-year