Download Nightly Build SDK

Sourceforge Github Releases NuGet

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
• 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, HDR to SDR and SDR to HDR tone mapping. You can use HDR display in Qt6(6.6+ for macOS, 6.x for windows), OBS Studio and more.
• Dolby Vision rendering, including Profile 5
• 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
• Subtitle rendering, including ass, plain text, bitmap, closed caption
• Smart FFmpeg runtime, dynamic load, binary compatible with 4.0~7.x
• Professional codecs: GPU accelerated HAP codec rendering, Blackmagic RAW, R3D

Install

CMake

  include(${MDK_SDK_DIR}/lib/cmake/FindMDK.cmake)
  target_link_libraries(your_target PRIVATE mdk)

Qt qmake

include($$MDK_SDK_DIR/mdk.pri)

CocoaPods

(Objective-)C/C++ Users

pod 'mdk'

Optionally you can use mdk.xcframework directly.

If fail to code sign: In Build Phase, add a New Run Script Phase with content

[ -n "$CODE_SIGN_IDENTITY" ] && find "$BUILT_PRODUCTS_DIR" -depth -name "lib*.dylib" -exec codesign -f -vvvv -s"${EXPANDED_CODE_SIGN_IDENTITY}" ${OTHER_CODE_SIGN_FLAGS:-} --preserve-metadata=identifier,entitlements,flags {} \;

Swift Users

pod 'swift-mdk'

and add

import swift_mdk

Nuget

Install via NuGet in Visual Studio for both Windows desktop and UWP

Distribute

• mdk(libmdk.so.0/ibmdk.dylib/mdk.dll) and ffmpeg library(or standard ffmpeg libraries) are always REQUIRED
• libass.dll/libass.dylib/ass.framework/libass.so can be optional if not using subtitle rendering
• mdk-braw.dll/libmdk-braw.{so,dylib}: optional, for blackmagic raw videos
• mdk-r3d.dll/libmdk-r3d.{so,dylib}: optional, for RED raw videos
• mdk.pdb/libmdk.so*.dsym: debug symbols.
• Add libdav1d.dll/libdav1d.dylib/dav1d.framework/libdav1d.so from to support av1 software decoding

Documents

• wiki
• sdk headers

Recommended settings

• macOS, iOS: player.setDecoders(MediaType::Video, {"VT", "hap", "FFmpeg", "dav1d"});
• Windows: player.setDecoders(MediaType::Video, {"MFT:d3d=11", "D3D11", "CUDA", "hap", "FFmpeg", "dav1d"});
• Linux:

    // XInitThreads(); // If using x11. before any x11 api call. some gui toolkits already call this, e.g. qt, glfw
    SetGlobalOption("X11Display", DisplayPtr); // If using x11. Requred by VAAPI, VDPAU
    player.setDecoders(MediaType::Video, {"VAAPI", "VDPAU", "CUDA", "hap", "FFmpeg", "dav1d"});

• Raspberry Pi: use mdk-sdk-linux.tar.xz, delete libffmpeg.so.* to use system ffmpeg to support h264, hevc hardware decoder and 0-copy rendering

    player.setDecoders(MediaType::Video, {"V4L2M2M", "FFmpeg:hwcontext=drm", "FFmpeg"});

• Android:

    SetGlobalOption("JavaVM", JvmPtr); // REQUIRED
    player.setDecoders(MediaType::Video, {"AMediaCodec", "FFmpeg", "dav1d"});

Live streams (RTSP, RTMP etc.) low latency

player.setProperty("avformat.fflags", "+nobuffer");
player.setProperty("avformat.fpsprobesize", "0");

Open Source

Modules and Dependencies

• License generator and validator
• Android java wrapper and example
• MediaFoundation decoder module
• av1 software decoder module
• sunxi decoder + renderer
• GFX surface and render loop
• JNI C++ api
• Android java and jni APIs in C++
• C++ TLS
• C++ compatibility layer
• cmake tools
• Blackmagic RAW
• R3D RAW

Examples and Plugins for Other Frameworks

• examples for different platforms and gui toolkits
• Swift player and QuickLook plugin for macOS
• obs-studio video source plugin
• as a qtmultimedia plugin

Language Bindings

• Swift binding
• Flutter/Dart
• C#

Sponsors

Users

金嵘达科技 爱玩宝

License

• Free for opensource projects, QtAV donors and contributors: you can acquire a key from me. Can be commercial software
• Free for Flutter users. A key is already included. Can be commercial softwares.
• Free for other non-commercial users: you can acquire a key from me.
• Commercial license for other users: a key for an app for a single platform or multiple platforms.
• Other users without a key: make sure your sdk is updated, otherwise you may see an QR image in the last frame.

License key generator and validator is open source