What audio delay is required to sync audio to video? I have 500 milliseconds max on my mixer.

I'm not an expert technician but I installed the card, configured it for 4 inputs (3 are cameras and one is a graphical feed from ProPresenter) and no audio through the card. I have a separate USB audio interface. The audio and video come together in Wirestream Pro. I did not have to add any delays in order to have the output from Wirestream synch'd. Images of the lips and audio of songs and speech seem perfectly aligned.

Does this work with OBS ?

Works perfectly with OBS. As long as the computer it is running on has the resources, it will work very well with OBS and Resolve.

The gaming computer that we purchased does not have an expansion slot in the computer and it can not be returned. It has 2 3.0 ssusb. Options?

How many inputs or outputs do you need? Magewell makes quality USB 3.0 capture dongles, with HDMI or SDI (one input per unit). Depending on your needs, perhaps NDI might be an option - NDI from Newtek is a FREE way to get IP video over your network, for instance video from one computer to another, or send gaming video out over network to another computer running OBS or something.

Does anyone know how to get 1080p to work into Vmix? Every other format works in vmix but 1080p does not work.

Once installed you will need to get the black magic drivers installed as well and run the software once. From there in vmix you will need to make sure your project file is set correctly to 1080p 30 frames or 60 depending on recording or stream and your internet speed. Once that is set you can add a camera source on from the list. If done correctly you should see them listed as Decklink Duo 1, 2, 3, or 4. Make sure wen you are adding your source that it reads the cameras output correctly. It is super important that the camera and the project file match or higher then what the camera is outputting to the sdi or it will give you problems. Another tip I can give you to test the camera is to use the black magic software to preview the camera output to gather your settings.

DeckLink Duo 2 4ch SDI Playback and Capture Card BMD-BDLKDUO2

Product ID: 254567597

Details

Brand
Blackmagic
Hardware interface
PCI Express x1
Operating system
Linux
Recommended uses for product
Video
Video capture resolution
1080p

⚡Gen 2 PCIe x4 high bandwidth

💾4 independent SDI channels

🔄Simultaneous capture & playback

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¥163674

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎥 Elevate your live production game with pro-grade 4-channel SDI capture!

PRO BROADCAST SYNC - Includes black burst/tri-sync reference for flawless video timing
QUAD SDI POWERHOUSE - Four independent 1080p60 SDI inputs for multi-camera workflows
SEAMLESS DUAL ACTION - Capture and playback simultaneously without dropping frames
SINGLE SLOT EFFICIENCY - Saves precious PCIe slots with a compact single-slot design
CROSS PLATFORM COMPATIBILITY - Works smoothly on Linux with major streaming apps like OBS & vMix

The Blackmagic Design DeckLink Duo 2 is a professional 4-channel SDI capture and playback card that fits into a single PCIe slot. It supports full HD 1080p60 video across four independent inputs, enabling simultaneous capture and playback. Designed for Linux systems, it integrates seamlessly with popular streaming software and includes a reference input for broadcast-grade synchronization, making it ideal for multi-camera live event production and broadcast workflows.

Specifications

ASIN	B01EKGTZ8C
AV Output	SDI
Antenna Location	Video Recording
Best Sellers Rank	#23,547 in Computers ( See Top 100 in Computers ) #34 in Internal TV Tuner & Video Capture Cards
Brand	Blackmagic Design
Built-In Media	AV Adapter, TF Card Reader
Compatible Devices	Windows and Linux systems
Customer Reviews	4.8 4.8 out of 5 stars (240)
Global Trade Identification Number	09338716003796
Hardware Interface	PCI Express x1
Item Dimensions	15.2 x 15.2 x 15.2 centimeters
Item Type Name	computer-internal-tv-tuner-and-video-capture-cards
Item Weight	5.3 Ounces
Manufacturer	Blackmagic Design
Mfr Part Number	003796
Minimum System Requirements	PCIe x1 slot, Linux operating system
Model Name	Blackmagic Design DeckLink Duo2
Model Number	003796
Operating System	Linux
Other Special Features of the Product	Four independent and configurable SDI interfaces; Simultaneous capture and playback
Platform	Linux
Tuner Type	DVB-T
UPC	750408404893
Unit Count	1 Count
Video Capture Resolution	1080p

Reviews

E**)

Currently working without problems, in uncontrolled environments and remains stable, it supports 4 video inputs / cameras at 1920x1080 at 60Hz, easy to configure and manage, the drivers are very simple to locate on their official page. Compatible with the main streaming video programs such as OBS, Wirecast, vMIX, I have tested each of them and the result has been satisfactory that we are already on the 3rd team assembled with this card. The price I consider accessible given the versatility and quality of this capturing, obviously not intended for enthusiasts or youtubers, but for event capture. I remain at your service in case you have any questions about this product, as an assembler of professional equipment, maybe I have already faced the dilemmas and problems that you can face and have the answer, so ... Ask! #eltecnologoem

21.11.2018

S**E

Die günstigste Gelegenheit einen HD Fill/Key Ausgang für den Broadcast-Betrieb zu haben.

19.12.2025

M**.

Nickel pour live sur OBS avec 3 cameras gh5 / G9 et XT3

12.08.2019

A**M

Funciona como corresponde, facil de instalar, de lo único que me arrepiento es de no haber comprado la 8k

20.04.2024

M**7

Tutto ok venditore super consigliato!

19.03.2025

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