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Friday, October 28, 2016
  • CONVERGENT DESIGN Gemini Uncompressed HD Digital Video Recorde

Convergent Design Gemini 4:4:4 Uncompressed HD Digital Video Recorder


Availability: Call for availability

Special Price: $3,760.00

Regular Price: $4,995.00

Quick Overview

The Gemini Recorder from Convergent Design makes fully compressed 4:4:4 recording easy and affordable. Selectable frame rates and codecs.

PROMO: Two Free 512 GB SSD’s PLUS a Free Option Activation with purchase of Gemini 4:4:4


When the nanoFlash from Convergent Design debuted in 2008 it put afforable, high-quality recording in the hands of many camera owners who had previously been constrained by the codecs of their particular camera. Now, with the release of the Convergent Design Gemini 4:4:4 uncompressed recorder, they have answered the call for an even more recording capability, and has thrown in a few fantastic extras as well.

The Convergent Design Gemini 4:4:4 allows for HD and 2K recording at 8-bit or 10-bit* and in 4:2:2 or 4:4:4 color space**. Uncompressed data is recorded directly from the camera to various input options: HD-SDI, 3G-SDI or Dual Link. It records 16-Channel Audio as well. The tiny unit (5.4 x 4.5 x 1.1", 1 lbs) features a 5" touchscreen monitor (800 x 480 resolution) which acts as the device interface and as a color monitor for live view or playback for file verification.. An HDMI output is available for further external monitoring options. Furthermore, the Gemini comes with corrective LUTs for monitoring S-Log and Log-C footage.

The Gemini 4:4:4 uses Solid State Drives (SSD) as the recording media (currently 256 GB or 512 GB) and features two SSD slots. Having two drives enables the Gemini to write to either one drive at a time, allowing for longer record times, or to write the same data to both drives simultaneously, creating two identical master copies at once. The Gemini comes with an eSATA Transfer Station for offloading footage from the SSDs.

In the future look for firmware upgrades to enable new features. Some announced features include support for 3D recording (left-eye/right-eye streams) and ARRIRAW. Both of these will come as paid upgrades to existing Gemini units.

*Bit rate depends on the camera being used.
**4:4:4 color space is only supported in 1080p23.98/24/25/29.97 and 2048x1080p23.98/24.

See Convergent Design's intro video for the Gemini 4:4:4 below:

Below is a table outlining many of the features and specifications of the Convergent Design Gemini 4:4:4.

Features Specification
Video Standards HD-SDI, SMPTE 292M; HD-SDI 3G, SMPTE 424M; HD-SDI Dual-Link, SMPTE 372M
Video Formats 1080p23.98/24/25/29.97/50/59.94; 720p23.98/25/29.97/50/59.94/60' 2048x1080p23.98/24
Video I/O Four BNCs, (2 Inputs, 2 Outputs, with individual power-down options), One HDMI (Type C) Output
Record Features Full Uncompressed 10-bit 4:2:2 / 4:4:4 Recording into Quicktime file (.mov) with audio and timecode

User programmable over/under crank, time-lapse, 3:2 and 2:2 pulldown removal, on-screen tally

Record video simultaneously to both SSD drives (backup) or span drives (for longer record times)

Video can be recorded with or without burned-in LUTs, on individual drive basis
Playback Control Play, Rewind, Fast-Forward, Pause and Step Control

Reference image overlay (aka onion skinning) planned in future firmware release
S-Log, Log-C Support Support for S-Log, Log-C with user programmable 1D LUTs, LUTs can be applied to either SDI output
Media Two Slots for 1.8" Solid State Drives (SSD), Hot-Swappable, 256 GB / 512 GB sizes

SSD Performance: 260 MBps Write, 415 MBps Read, 6 GBps SATA Interface
Transfer Station 1.8" SSD to 6 GBps eSATA transfer station (included)
Built-In LCD Monitor 5" high brightness LCD, sunlight viewable, 800 cd/m2, 800 x (RGB) x 480 Pixels, 24-bit, 900:1 True Contrast, Wide 85° Viewing Angle (IPS Technology), Color Calibrated at Factory

1:1 Pixel Option, with user positioning of desired window via touch control
Menu System Touch Sensitive menu system with user-defined presets and customizable level of on-screen data
Timecode HD-SDI Embedded (SMPTE RP-188) or LTC via the remote control option
Digital Audio I/O HD-SDI Embedded 4-Channels, uncompressed, 24-Bit, 48K; 16-Channel in future firmware
Analog Audio Output 3.5 mm output jack, headphone or consumer line level, support to monitor any channel pair
3D - Dual Stream (Option) Extra cost option for Full Stereo (dual stream) record and playback in a single Gemini unit

Left and Right Video Streams recorded as individual files, in full uncompressed

Vertical Flip, Horizontal Flop, for either/both streams

Individual output of each stream or Combine: Side by Side, Line by Line, Anaglyph, 50/50 Composite

Simultaneous output in multiple formats (ie Side by Side and 50/50 Composite)
Remote Control (Option) Wired Remote Control with Tally Light and LTC I/O
NLE Compatibility NLE Support planned for Avid, Final Cut Pro, Premiere, Vegas and Edius
Power Requirements 6 to 19 Volts DC, 8 to 15 watts (active) / under 1 watt (power-save mode)
Size, Weight 138 x 114 x 27 mm (5.4 x 4.5 x 1.1"); 450 grams (1 lb); Milled Aluminum Case
Environmental +50 to -20 ⁰C Operating / +75 to -40 ⁰C Storage
Gemini Kit Components Gemini 4:4:4 Recorder, eSATA Transfer Station, Custom Fitted Hard Plastic Case, HD-SDI cables, HDMI cable, Hotshoe with 1/4"x20 Ball Mount, Universal AC Power Supply, 4-Pin XLR Power Cable
Optional Accessories 256GB / 512GB SSD Media, DC to DC Converter (Input: 20 to 32V, Output: 12V @ 4A), 56 Wh Battery and Charger, Sun Shade, Remote Control, D-Tap Power Cable
FUTURE ENHANCEMENTS 3D Support with one Gemini unit (additional cost)

ARRIRAW Recording (additional cost)
Notes 1080p50/60 data striped across both drives; 4:4:4 only supported in 1080p23.98/24/25/29.97 and 2048x1080p23.98/24; DPX file format support planned in future firmware

Specifications subject to change without notice.