Download SDK Files
Released: 15 Jan 2026
SDK
ATEM Switchers 10.2.1 SDK
This SDK provides developer support for ATEM 10.2.1 that allows updating of hardware control and software interfaces for ATEM production switchers.
SDK Manual
ATEM SDK Manual
This manual provides all the information you need to set up and use the SDK for ATEM Switchers.
SDK Manual
Released: 15 Jan 2026
Software
ATEM Switchers 10.2.1 Update
This software update adds support for cameras 41 to 80 on the GPI and Tally Interface when used with ATEM 4 M/E Constellation 4K Plus. In addition this update resolves an intermittent issue when transitioning between sources on ATEM Constellation 4K models and when enabling downstream key tally override on ATEM 4 M/E Constellation 4K.
Read more
ATEM Switchers 10.2.1 Update
15 Jan 2026
Protocols
Streaming XML File Format Manual
This PDF document provides information for developers on the XML format for specifying additional streaming services to the Blackmagic Web Presenter and ATEM models with streaming capabilities.
Download PDF Manual
Released: 01 Sep 2023
Videohub Ethernet Protocol Manual
This PDF document provides information for developers on the Blackmagic Videohub Ethernet Protocol. It describes the text based protocol to control Blackmagic Videohub routers over a networked connection.
Download PDF Manual
Released: 01 Nov 2023
HyperDeck Ethernet Protocol Manual
This PDF document provides information for developers on the HyperDeck Ethernet Protocol. It describes the text based protocol to control Blackmagic HyperDeck disk recorders over a networked connection.
Download PDF Manual
Released: 23 Dec 2024
Presentations and Sample Code
This downloadable package contains presentation content from the 2018 IBC Blackmagic Developer Support booth. It includes a PDF slide presentation with accompanying sample code that builds on Windows. Please refer to the README.md within the package for details.
Introduction to ATEM Switcher SDK
This package consists of the "Simple Switcher" sample from the Introduction to ATEM Switcher SDK presentation. The sample is written in C# and targets Windows only.
Developer Forum
Connect with the wide experience of the developer community.
Software Developers Forum
Register as a Blackmagic Developer
Make sure you get the latest news, software updates, new SDKs by registering as a Blackmagic Design developer to receive our Developer e-mails. You can also follow us on X(Twitter), Facebook or use our RSS feed to keep up to date with our latest product announcements.
View Privacy Policy
Sign up as a developer