mdk

MDK: Multimedia Development Kit

Changelog

API

Features

• Simple and powerful API set
• Cross platform: Windows(x86, arm), UWP, Linux, macOS, Android, iOS, tvOS, visionOS, Raspberry Pi
• Hardware accelerated decoders for all platforms
• 0-copy GPU rendering for all platforms and all renderers(Vulkan is WIP.)
• Dynamic OpenGL
• OpenGL, D3D11, D3D12, Vulkan and Metal rendering w/ or w/o user provided context
• Integrated with any platform native ui apps, gui toolkits or other apps via OpenGL, D3D11/12, Vulkan and Metal (WinUI3, OBS, Flutter, Qt, SDL, GLFW, SFML, .NET Avalonia etc.) easily
• HDR display metadata passthrough, HDR <=> SDR tone mapping. You can use HDR display in Qt6(6.6+ for macOS, 6.x for windows), OBS Studio, Android SurfaceView and more.
• Dolby Vision rendering, including Profile 5. Support HEVC and AV1.
• HEVC, VP8/9 transparent videos(alpha channel) support for all decoders and renderers
• Professional codecs: GPU accelerated HAP codec rendering, Blackmagic RAW, R3D, nvJPEG2000
• Subtitle rendering, including ass, plain text, bitmap, closed caption
• Seamless/Gapless media and bitrate switch for any media
• Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for timeline preview
• Smart FFmpeg runtime, dynamic load, binary compatible with 4.0~8.x

About SDK for Windows Desktop & UWP

SDK is built by

• latest VS2022 with FFmpeg win32 and FFmpeg UWP

SDK can be used by any C or C++11 compiler, e.g. vs2015, vs2022, mingw g++, clang

Use in CMake Projects

	include(mdk-sdk-dir/lib/cmake/FindMDK.cmake)
	target_link_libraries(your_target PRIVATE mdk)

Qt qmake project

include($$MDK_SDK_DIR/mdk.pri)

Recommended settings

    player.setDecoders(MediaType::Video, {"MFT:d3d=11", "D3D11", "CUDA", "hap", "FFmpeg", "dav1d"});

Runtime Requirements

• Vista+
• ucrt, vc140+ runtime

Optional:

• libEGL.dll, libGLESv2.dll, D3DCompiler_47/43.dll. Qt apps can use qt's dlls
• vulkan

Supported Graphics APIs:

• D3D11: recommended
• D3D12
• OpenGL(No UWP): via WGL. The default if EGL runtime is not found.
• OpenGL ES2/3: via ANGLE or others. The default if EGL runtime is found.
• Vulkan(No UWP)

Supported Decoders:

• FFmpeg. options: threads=N. e.g. -c:v FFmpeg. -c:v FFmpeg:threads=4
• MFT. options: d3d=0/9/11/12, pool=0/1. e.g. -c:v MFT(software), -c:v MFT:d3d=11(hardware) or MFT:d3d=12.
• CUDA(No UWP)
• D3D11: via FFmpeg
• DXVA(No UWP): via FFmpeg
• NVDEC(No UWP): via FFmpeg
• CUVID(No UWP): via FFmpeg
• QSV(No UWP): via FFmpeg
• BRAW: Blackmagic RAW
• R3D: R3D RAW
• hap
• VAAPI

Source code:

• some examples using mdk sdk
• OBS Studio plugin
• QtMultimedia plugin
• MFT decoder module
• dav1d decoder module
• Blackmagic RAW
• R3D RAW

Copyright (c) 2016-2025 WangBin(the author of QtAV) Free for opensource softwares, non-commercial softwares, flutter, QtAV donors and contributors.