4K Video Encoder/Decoder ZowieBox - Low-Latency SRT Streaming

In this review the Zowietek ZowieBox is evaluated as a compact, versatile 4K HDMI encoder and decoder aimed at content creators, event producers, educators, and AV integrators who need reliable, low-latency conversion between HDMI and network streams. The single biggest reason to buy is its ability to convert HDMI to and from SRT, RTMP(S), or RTSP while also offering HDMI pass-through and UVC conversion, which lets users stream or monitor 4K sources with minimal setup and without tying up a PC.

Key Features

• HDMI to SRT/RTMP/RTSP Encoding: Converts HDMI camera or console output to common streaming protocols so broadcasters can send live video directly to platforms or private servers with low latency.
• SRT/RTMP/RTSP to HDMI Decoding: Accepts network streams and outputs HDMI for display on TVs, projectors, or switchers, simplifying multi-display distribution at events.
• HDMI to UVC and UVC to HDMI: Acts as a UVC converter so professional HDMI cameras can appear as USB webcams to a computer, or USB cameras can be presented on HDMI displays for meetings and classrooms.
• 4K Input with Passthrough: Handles 4Kp60 HDMI input with zero-lag loop out while streaming 1080p60, and supports 4Kp30 streaming when input is 4Kp30, preserving high-quality monitoring and capture.
• Standalone Game Streaming: Streams console gameplay PC-free, providing plug-and-play live broadcast capability that does not impact local gaming performance.
• Web UI Configuration: Full control from a browser or mobile device for PTZ control, OSD, tally, stream and network settings, and preview monitoring.

Who It's For

The ZowieBox is best for live streamers, event technicians, and educators who need a small, portable device to bridge HDMI sources and network streams. It suits sports coverage, conference rooms, houses of worship, and classrooms where reliable low-latency transmission and simple HDMI monitoring are essential.

It is less appropriate for users who need simultaneous encode and decode in one box or those who require a multi-input hardware switcher; the unit switches modes but cannot act as encoder and decoder at the same time, so multi-directional workflows may need additional hardware.

Pros & Cons

Pros

• Compact form factor with an LCD and tally light makes deployment and status checks fast and easy.
• Supports secure, low-latency SRT streaming and common RTMP/RTSP protocols for wide compatibility with streaming setups.
• Flexible conversion options (HDMI to UVC, UVC to HDMI) expand use with computers and displays without extra converters.
• 4K passthrough preserves local display quality while streaming, useful for game capture and monitoring.

Cons

• Cannot function as encoder and decoder simultaneously, so complex two-way workflows require two units or other equipment.
• Some users report mixed results on compatibility and functionality depending on source devices, so testing with target hardware is advised.

Specifications

Product Type	HDMI Video Encoder/Decoder
Input	HDMI 4Kp60/4Kp30
Output	HDMI loop out, SRT/RTMP(S)/RTSP network streams, UVC over USB
Streaming Protocols	SRT, RTMP(S), RTSP
Modes	Encoder or Decoder (switchable, not simultaneous)
Configuration	Web UI via PC/phone/pad with preview and control

Our Verdict

The ZowieBox is a compact, well-featured HDMI encoder/decoder that offers excellent value for streamers and AV teams who need reliable SRT and RTMP workflows plus 4K passthrough and UVC conversion. It is especially useful where low-latency transmission and easy web-based setup matter, though buyers should plan for single-mode operation or use two units for full point-to-point extension.

Frequently Asked Questions

Can the device encode and decode at the same time?
The unit can switch between encoder and decoder modes but cannot perform both roles simultaneously.

Will it stream 4K signals?
With 4Kp60 input it provides 4K loop out and typically streams at 1080p60; with 4Kp30 it can stream at 4Kp30.

Can I use a professional HDMI camera as a webcam?
Yes, the HDMI to UVC encoder mode presents HDMI cameras to a computer as a USB video class device for meetings and streaming.