OpenTok Windows SDK

The OpenTok Windows SDK lets you use Vonage Video API-powered video sessions in Windows apps.

The OpenTok Windows SDK supports applications written in C#.

Important Notes

Windows SDK 2.24 and above no longer support 32-bit x86 architectures.

Interoperability

Apps written with the OpenTok Windows SDK 2.35.1 can interoperate with OpenTok apps written with version 2.33+ of the OpenTok client SDKs:

OpenTok.js
OpenTok Android SDK
OpenTok iOS SDK
OpenTok Windows SDK
OpenTok macOS SDK
OpenTok Linux SDK
OpenTok React Native SDK

Installation

When creating an installer for your application, add Visual C++ Redistributable for Visual Studio 2019 as an installer package. Only x64 is currently supported.

The Windows SDK requires .NET version 4.6.2 or greater, but it also supports .NET Core 3.1 or greater, and .NET Standard 2.0. It provides support for Windows Presentation Framework and Windows Forms.

System Requirements

The OpenTok Windows SDK is expected to work on desktops, laptops, and tablets from Lenovo, HP, Dell, and ASUS.

The OpenTok Windows SDK is only supported on the x64 architecture. The supported operating system versions are:

Windows 7
Windows 8.x
Windows 10
Windows 11 (only Windows SDK 2.22.0+ versions)

Version 2.23.0 of the SDK added support for Universal Windows Platform in desktop applications.

Learning to Build

The best way to learn how to use the OpenTok Windows SDK is to follow the Basic Video Chat tutorial.

Once you understand the basics, you can get more detailed information and learn how to customize your application with the developer guides. To investigate specific API classes and methods, see the OpenTok Windows SDK API reference.

Code Samples

For sample code, go to the vonage-video-windows-sdk-samples repo at GitHub.

Documentation & More Information

See the OpenTok Windows SDK API reference and the OpenTok developer guides.

For a list of new features and known issues, see the release notes.