YoloBox Extreme Inputs, Outputs, and Connectivity: The Complete Technical Guide
The YoloBox Extreme's hardware spec sheet is more nuanced than it first appears. Understanding exactly what each input and output can do — and what the NDI options actually support — determines whether it fits your specific production. Here's the full breakdown.
Watch the overview: YoloBox Extreme 15 firmware updates on Video Guys Live →
HDMI Inputs — Not All Eight Are Equal
The YoloBox Extreme has 8 HDMI inputs, but they're split into two tiers:
- 5 inputs: 4K/60 — full-resolution 4K at 60 frames per second
- 3 inputs: 1080p/60 — HD inputs suitable for cameras, laptops, or legacy sources
For productions mixing 4K cameras with HD sources — a common real-world scenario — this matters. Put your primary cameras on the 4K inputs, secondary and supplemental sources on the 1080p inputs.
NDI — Full Bandwidth and HX Both Supported
The YoloBox Extreme supports up to 6 NDI sources, with an important distinction between connection types:
- Up to 2 full-bandwidth NDI sources — highest quality, highest bandwidth, for primary cameras on a robust network
- Up to 6 NDI HX sources — compressed NDI for cameras with HX output, lower bandwidth requirement
You can mix both types simultaneously. Full-bandwidth NDI cameras on two slots, HX cameras filling the remaining slots. The YoloBox automatically handles both streams within the same production.
NDI Output — Any Source, Not Just Program
The YoloBox Extreme's NDI output lets you put a video signal back onto your network — and it's not limited to the program feed.
In the HDMI Out settings, press the NDI output option and tap the red "Program" button to change which source you want to output. You can assign the NDI output to:
- Program feed
- Preview feed
- Any individual camera or source
This makes the YoloBox Extreme a flexible NDI distribution point — not just a streaming device with an NDI output tacked on.
HDMI Outputs — Fully Assignable
Both HDMI outputs are independently configurable. For each output you choose:
- Resolution and frame rate — match your display or downstream device
- Output type: Program, Preview, Multiview, Custom source, or full screen share
On the fly, mid-production. Switch HDMI Output 2 from multiview to confidence monitor for a speaker walking on stage, then switch it back. No menus buried under settings — it's in the main interface.
USB Input — Webcam Sources
USB cameras, including the YoloCam S3, connect directly to the YoloBox Extreme via USB. They appear as video sources alongside HDMI and NDI inputs and can be controlled natively from the YoloBox touchscreen.
USB Output — Webcam to Computer
The YoloBox Extreme can output its program feed as a USB webcam to any connected computer. Zoom, Microsoft Teams, OBS, vMix, Wirecast, Ecamm — the YoloBox appears as a camera source in all of them.
Two use cases: use it for video conferencing where you want your full switched production as your call video, or use it to offload encoding to a computer running OBS or Wirecast while the YoloBox handles switching and monitoring.
Cellular Bonding via SIM
The YoloBox Extreme supports SIM card connectivity for cellular bonding — stream from anywhere with a mobile connection, no external bonding device required. For field productions, sports, or any event without reliable venue Wi-Fi, this is the backup that travels with the unit.
Storage — Internal, SD, and USB
Record to:
- Internal storage — built into the unit
- SD card — insert and record directly
- USB drive — connect any compatible USB storage
Storage source is selectable per recording session. The recording destination, resolution, frame rate, and bitrate are all independently configurable for the program feed and each ISO source.
Questions about YoloBox Extreme connectivity for your production? Call 1-800-323-2325.