mdk

MDK: Multimedia Development Kit

Changelog

API

Features

• Simple and powerful API set
• Cross platform: Windows, UWP, Linux, macOS, Android, iOS, Raspberry Pi
• Hardware accelerated decoders
• 0-copy GPU rendering for all platforms and all renderers(Vulkan is WIP.)
• Dynamic OpenGL
• OpenGL, D3D11, 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, Vulkan and Metal (OBS, Qt, SDL, GLFW, SFML etc.) easily
• Seamless/Gapless media and bitrate switch for any media
• HDR rendering in GPU
• Optimized Continuous seeking. As fast as mpv, but much lower cpu, memory and gpu load. Suitable for timeline preview
• Smart FFmpeg runtime, dynamic load, compatible with 4.x/5.x abi

About SDK for Windows Desktop

SDK is built by

• clang-cl 13.0 + lld, with Windows SDK 10.0.19041.0, MSVC CRT 14.28.29333, FFmpeg
• latest vs2022 with FFmpeg

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

Use in Visual Studio

Install via NuGet (Recommended)

mdk is published on https://www.nuget.org/packages/mdk/. Now you can install it in visual studio.

Import from Release Package

mdk sdk can be imported by vs projects. Insert the following line in your vcxproj as the last element of Project (assume mdk-sdk is in the same dir as vcxproj)

<Import Project="mdk-sdk\build\native\MDK.targets" Condition="Exists('mdk-sdk\build\native\MDK.targets')" />

Once installed or imported, necessary compile flags and link flags will be added, runtime dlls will be copied to output dir.

Use in CMake Projects

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

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
• 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, pool=0/1. e.g. -c:v MFT(software), -c:v MFT:d3d=11(hardware).
• 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

Examples

gapless playback for any audio and video: mdkplay.exe(or glfwplay.exe/window.exe/sdlplay.exe) file file2 ...

N players for 1 video: multiplayers -es -share -c:v D3D11 -win N url

N videos and N players: multiplayers -es -share -c:v D3D11 url1 url2 ... urlN

N videos renderers for 1 player: multiwidnows url

Source code:

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

Copyright (c) 2016-2021 WangBin(the author of QtAV) Free for opensource softwares, non-commercial softwares, QtAV donors and contributors.