The Magewell Pro Capture Mini SDI is a compact, professional-grade video capture card designed to capture SDI video signals with embedded audio. Supporting resolutions up to 1920x1200 pixels, the Pro Capture Mini SDI delivers reliable, high-quality video capture for a wide range of applications, including live streaming, video production, and broadcasting. With advanced features like 10-bit video processing, deinterlacing, cropping, color adjustments, and hardware timestamping, this capture card ensures exceptional performance across various video workflows.

The Pro Capture Mini SDI offers robust signal detection capabilities, auto-detection of input formats, timecode support, and closed captioning, making it a versatile and reliable solution for professional environments. Compatible with Windows, Linux, macOS, and Chrome OS, the Pro Capture Mini SDI integrates easily into diverse production setups and works seamlessly with popular software such as OBS Studio, vMix, and others.

Its compact form factor makes it ideal for space-constrained setups, while its loop-through functionality allows users to pass the video signal to other devices without additional hardware. Designed for continuous 24/7 operation, the card supports low-latency capture and high-speed memory, ensuring smooth and uninterrupted video workflows.

Pro Capture Mini SDI Specifications

Recommended OS
Windows 10/11/Server 2016/Server 2019/Server 2022/Server 2025 (x86 & x64) and above
Linux x86, x64 & ARM architecture, with 2.6.35 and above
Mac OS X 10.9 and above
macOS 10.12 and above

Supported APIs
Windows
DirectShow
DirectKS
Wave API/DirectSound/WASAPI
Linux
V4L2
ALSA
macOS
AVCaptureSession
AudioUnit

Supported Software
VLC
VirtualDub
OBS
XSplit
vMix
VidBlaster
Wirecast
Microsoft Media Encoder
Adobe Flash Media Encoder
Any other DirectShow/V4L2/AVCaptureSession encoding/streaming software

Input Interfaces
MMCX
SD/HD/3G SDI

Host Interfaces
PCIe Gen2 x1

Loop-through Interface
MMCX
SD/HD/3G SDI

Input Features
Support for input video resolutions up to 2048x1080 pixels

SDI Specific Features
Integrated cable equalizer extending the cable length as follows:
up to 330m for SD-SDI signals
up to 190m for HD-SDI signals
up to 150m for 3G-SDI signals
Support for SD/HD/3Ga/3Gb/3Gb-DL/3Gb-DS standards
Support for 2K (2048x1080) mode
Support for RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2 color sampling
Support for 10/12-bit color depth
Support for extraction of SMPTE 352 payload identifier
Support for up to 8 (mono) audio channels at 48KHz (channels 1–8 from the 16 available in the SDI spec)
Support for extraction of audio formation information & channel status data
Limited support of 3Gb-DS: only the first stream can be captured
Limited support for capture of the first link of dual link interfaces:
YCbCr 4:2:2 10-bit 1080p 50/59.94/60: captured as 1080i 50/59.94/60
YCbCr 4:4:4 10-bit: captured as 4:2:2
RGB 4:4:4: R/B sub-sampled

Video Capture Formats
Support for capture image resolutions up to 2048x2160 pixels
Support for capture frame rates up to 144fps (Actual capture frame rate can be limited by PCIe bandwidth, and at higher image resolutions - above 1280x1024 - by the pixel clock of the on-board video processing hardware. eg. Max frame rate at 1920x1080 = ~80fps. )
Support for 4:2:0 8-bit capture formats: NV12, I420, YV12
Support for 4:2:2 8-bit capture formats: YUY2, YUYV, UYVY
Support for 4:4:4 8-bit capture formats: V308, IYU2, V408, BGR24, BGR32
Support for 4:4:4 10-bit capture formats: V410, Y410
More capture formats are supported via Magewell Capture SDK

Video Processing Features
Two video processing pipelines with ~180Mpixels/s processing bandwidth for each one
Full 10-bit video processing
Video cropping
Video scaling
Video de-interlacing
Weave
Blend top & bottom field
Top field only
Bottom field only
Video aspect ratio conversion
Auto or manual selection of input aspect ratio
Auto or manual selection of capture aspect ratio
Three aspect ratio conversion modes: Ignore (Anamorphic), Cropping or Padding (Letterbox or Pillarbox)
Video color format conversion
Auto or manual selection of input color format & quantization range
Auto or manual selection of capture color format, quantization range & saturation range
Support for RGB, YCbCr 601, YCbCr 709, YCbCr 2020 color formats
Support for Limited or Full quantization range
Support for Limited, Full & ‘Extended gamut’ saturation range
Video frame rate conversion
Video OSD composition
Support for PNG OSD image (up to 2048x2160)
Support for dynamic loading of RGBA OSD image via SDK

Multiple Cards per System: Support for multiple cards plugged to one system

Multiple Capture Streams
Unlimited capture streams for any one input channel
Independent cropping, aspect ratio, color format, resolution, frame rate, de-interlacing and color adjustment settings for each individual stream

Ultra Low Latency Support
Latency of 64 video lines
Partial notification mode in SDK

Timestamp & A/V Synchronization
Hardware based 100ns high resolution clock
Audio frames (192 audio samples) & video frames are stamped with hardware clock
Hardware clock can be synchronized across cards (via SDK)

Video Capture SG-DMA
~400MB/s per channel DMA bandwidth in PCIe 2.0 system
~200MB/s per channel DMA bandwidth in PCIe 1.0 system
Support for auto detection of Intel tiled GPU surface
Support for DirectGMA for AMD video adapter chipsets
Support for GPUDirect for Nvidia video adapter chipsets

SDK: Magewell Capture SDK for easy integration, maximum flexibility and performance

Windows Driver Tweaks
All options can be controlled by three levels of registry key: global level, product level and device level
Video, Audio, Crossbar filter names can be customized via registry keys

Firmware Upgrade
Multiple cards in one system can be upgraded simultaneously
Cards can be upgraded without a system power shutdown (In most cases, even a reboot is not needed)
Safe upgrade. If power off or system break down occur when the firmware is being upgraded, it will automatically restore to the initial version. This function is only available for firmware version 1.21 and above.

LED Indicator
Status LEDs indicate the working state of each channel:
Pulsing slowly: input signal unlocked
On: input signal locked
Double blinks: memory failed or FPGA configuration failed
Off: firmware or power supply abnormal

Form Factor: Mini PCIe Add-on Card, 30mm x 51mm
Accessories: 2 x MMCX to BNC cables (32cm)

Power Consumption
High Performance Firmware
Max current at 3.3V: ~ 1.1 A
Max power consumption: ~ 3.62 W
Low Power Consumption Firmware
Max current at 3.3V: ~ 0.95 A
Max power consumption: ~ 3.19 W

Working Environment
Operating temperature: 0 to 60 deg C
Storage temperature: –20 to 70 deg C
Relative Humidity: 5% to 90% non-condensing