VMX is video codec designed for very high encoding/decoding performance in software. VMX began as the "vMix Video Codec" used for the vMix Instant Replay feature. It has since been expanded with alpha channel support and incorporated into the Open Media Transport protocol.
- Low latency intra-frame only
- 4:2:2:4 with alpha channel support
- 10 bit support
- Highly optimized AVX2 code capable of encoding 2160p60 on a single Intel i7 core
- Cross platform. (Windows, Mac, Linux) with ARM NEON support provided via sse2neon
VMX is distributed under a permissive MIT license. Further details can be found in the LICENSE file
Minimum: 64bit CPU with SSE4.2 and SSSE3 Recommended: 64bit CPU with AVX2 support (Intel Haswell (2013) and newer)
64bit ARM CPU with NEON instructions (ARMv8)
Documentation can be found at: https://www.openmediatransport.org/docs/
Binaries with Library files are available in the Releases section of the libomtnet repo. These are available for Windows and MacOS and are the recommended way to get started.
Include vmxcodec.h, reference libvmx.lib and you're ready to go.
All functions can be called with DllImport
Use IntPtr for the instance type. No structs need to be defined.
- Install Visual Studio 2022 and Intel C++ Compiler 2024 or higher
- Open libvmx.sln
- Build
- Install Clang
- cd ./build
- Run ./buildlinuxx64.sh or ./buildlinuxarm64.sh depending on platform
- Install xcode with Apple Clang Compiler
- cd ./build
- Run ./buildmacuniversal.sh
