Blackmagic Design Decklink SDI 4K
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Manufacturer Information
Blackmagic Design
https://www.blackmagicdesign.com
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Algam SAS
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A DeckLink Focused on SDI: The Compact Solution Within the Range
Within the DeckLink card lineup, the DeckLink SDI 4K focuses on the essentials for studios and editing suites working in a SDI chain: a high-quality SDI input and output, in a compact form factor designed to fit a wide variety of PCI Express workstations. This "SDI only" approach makes it a coherent choice as soon as your monitoring, routers, converters, or recorders are already SDI-based, and you want a card dedicated to capture and playout without multiplying unnecessary connectors.Thanks to its multi-rate support, it integrates seamlessly into both legacy workflows (SD/HD) and newer chains (2K/Ultra HD). The result: a card that is simple to deploy, suitable for fixed workstations, and sufficiently "studio-grade" to rely on key elements like the reference input and device control.
Who Is It For and What Studio Uses?
The Blackmagic Design DeckLink SDI 4K is aimed at editors, colorists, and video technicians who need a reliable interface between their applications and the SDI world: ingest from cameras, VTRs, or SDI streams, full-screen playback to a professional SDI monitor, or a dedicated video output to secure display during a grading session.It is particularly relevant in environments where stability and synchronization are paramount: post-production suites, control rooms, content studios, or rooms equipped with SDI monitors. Its integration on Mac, Windows, or Linux allows standardization of the machine fleet, and its SDI connectivity facilitates interfacing with existing infrastructure (patching, distribution, converters, recorders).
Technical specifications
| Type of optional card | Acquisition, Transmission | Audio/Video inputs | 6G-SDI |
| Audio/Video outputs | 6G-SDI | Weight | 127 g |
| Use of third-party software | Yes | ||
Questions frequently asked
Is the DeckLink SDI 4K compatible with 4K video over SDI?
The card supports one 6G-SDI input and output in SD, HD, 2K, and 4K resolutions with 10-bit video signal.
How many audio channels can the DeckLink SDI 4K carry?
Audio is embedded in the SDI stream with 16 channels in HD, 2K, and 4K. In SD resolution, the capacity is 8 embedded audio channels.
What PCI Express slot is required to install this card?
Installation requires a PCI Express Gen 2 interface with 4 lanes. The card is compatible with PCI Express x4, x8, and x16 slots.
Can the card be synchronized with a studio reference?
A sync input accepts Tri-Sync or Black Burst references, allowing integration into a synchronized video chain. RS422 ports compatible with Sony are also available for device control.
Does the card work with editing software on Mac or Windows?
Compatibility is supported on Mac, Windows, and Linux. Use with third-party software is supported.



