- Supports uncompressed RGB24 capture at 1080p60 and high-framerate capture up to 1080p120
- Driverless UVC and UAC plug-and-play compliance across Windows, macOS, and Linux
- Comprehensive 3.5 mm audio connectivity featuring independent mic, line-in, and headset jacks
- Low hardware latency under 50 ms for real-time monitoring
- 4K60 input and loop-out pass-through is constrained to YUV420 chroma subsampling
- Lacks high dynamic range (HDR) and variable refresh rate (VRR) pass-through support
- Lightweight all-plastic housing lacks internal connector reinforcement brackets
Overview
Operating across a 5 Gbps USB 3.1 Gen 1 Type-C bus, the device establishes driverless UVC and UAC handshakes across Windows, macOS, and Linux kernels without requiring proprietary background daemons. Architectural revisions in the ‘P’ iteration expand video pipeline processing to ingest and pass through 3840 x 2160 signals at 60 Hz under YUV420 chroma subsampling, alongside dedicated 1080p60 capture in uncompressed RGB24 color space. Hardware encoding accommodates 1080p at up to 120 frames per second and 4K at 30 frames per second into NV12 and YUY2 formats, maintaining sub-50 ms input latency suitable for software-based preview monitoring. Integrated 3.5 mm analog audio routing incorporates dedicated microphone, line-in, and headset TRRS jacks directly into the digitized stream alongside embedded HDMI audio rails.
Encased in a compact 4.33 x 2.48 x 0.87 in (110 x 63 x 22 mm) polymer shell weighing 2.22 oz (63 g), the physical assembly relies entirely on perimeter ventilation perforations for convective heat rejection. Surface temperatures elevate during sustained 4K30 or 1080p120 capture sessions, though passive convective airflow through the upper and lateral slits maintains stability under typical ambient room environments. Tri-color status LEDs provide direct diagnostic feedback for USB bus power, active HDMI clock locking, and capture pipeline states.
Long-term reliability depends heavily on host USB root hub stability and cable strain management, as surface-mounted HDMI and 3.5 mm ports lack secondary internal metal anchoring plates. While plug-and-play UVC protocol implementation ensures broad cross-platform streaming suite compatibility across OBS Studio and open-source capture software, prospective operators must account for 4K60 pass-through chroma compression and the absence of high dynamic range or variable refresh rate support.
Technical Specifications
| Model | ezcap 333P |
| Host Interface | USB 3.1 Gen 1 Type-C (5 Gbps) |
| Video Input | HDMI 1.4b (up to 3840 x 2160 at 60 Hz YUV420) |
| Video Pass Through | HDMI Loop-Out (up to 4K60 YUV420, 4K30, 1440p60, 1080p120) |
| Maximum Capture Resolution | 3840 x 2160 at 30 fps (NV12), 2560 x 1440 at 60 fps (NV12), 1920 x 1080 at 120 fps (NV12) |
| Supported Video Formats | NV12, YUY2, RGB24 (up to 1080p60) |
| Audio Inputs | HDMI embedded, 3.5 mm TRS Line In, 3.5 mm TRS Mic In, 3.5 mm TRRS Headset In |
| Audio Outputs | HDMI embedded pass-through, 3.5 mm TRRS Line/Headset Out |
| Driver Standard | UVC (USB Video Class) & UAC (USB Audio Class), Driverless |
| Hardware Latency | < 50 ms |
| Operating System Compatibility | Windows 10/11 (64-bit), macOS 10.15+, Linux, ChromeOS, Android |
| Dimensions | 4.33 x 2.48 x 0.87 in (110 x 63 x 22 mm) |
| Weight | 2.22 oz (63 g) |
| Thermal Solution | Passive convective venting |
| Power Source | USB Bus Powered (5V DC via Type-C) |
| Status Indicators | Tri-color LED (Red: Power, Blue: HDMI Signal, Green: Active Run) |
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At a Glance
How reliable is the ezcap 333P Review: Accessible High-Framerate UVC Capture according to Mizex audits?
A capable entry-level capture solution for high-framerate 1080p120 and RGB24 streaming, provided users can accept YUV420 chroma subsampling at 4K60 and an unreinforced plastic enclosure.
What are the known quirks or drawbacks of the ezcap 333P Review: Accessible High-Framerate UVC Capture?
Our reliability audit identified the following documented caveats:
- 4K60 input and loop-out pass-through is constrained to YUV420 chroma subsampling
- Lacks high dynamic range (HDR) and variable refresh rate (VRR) pass-through support
- Lightweight all-plastic housing lacks internal connector reinforcement brackets
What are the key engineering highlights of the ezcap 333P Review: Accessible High-Framerate UVC Capture?
The top strengths recorded in our evaluation include:
- Supports uncompressed RGB24 capture at 1080p60 and high-framerate capture up to 1080p120
- Driverless UVC and UAC plug-and-play compliance across Windows, macOS, and Linux
- Comprehensive 3.5 mm audio connectivity featuring independent mic, line-in, and headset jacks
- Low hardware latency under 50 ms for real-time monitoring