FFmpeg video plugin

Prerequisites

● Harfang C++ SDK

The Harfang C++ SDK is only required to build the sample test program.

● FFmpeg libraries

You can either use the binary packages from the FFmpeg website or any package manager (apt, pacman, homebrew, chocolatey…).

Build

Both plugin and sample can be built using CMake and any recent C/C++ compiler (gcc, clang, msvc…).

● FFmpeg plugin

To build the plugin, go to the source directory and create a build directory where CMake configuration will be performed.

On Windows, you must defined FFMPEG_ROOT. This variable contains the path to the FFmpeg libraries and header files.

mkdir build
cd build
cmake .. \
    -DFFMPEG_ROOT=<path where FFmpeg sdk> \
    -DCMAKE_INSTALL_PREFIX=<plugin install path>

On Linux, do not forget to specify CMAKE_BUILD_TYPE or the install will fail. If FFmpeg was installed using the system package manager, there is no need to specify FFMPEG_ROOT.

cmake .. \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=<plugin install path>

● Test program

The sample program requires Harfang C++ SDK, Asset compiler (assetc) and the FFmpeg plugin (or any video stream plugin).

cmake .. -DHG_CPPSDK_PATH=<path to harfang cpp sdk> \
         -DHG_ASSETC_PATH=<path to assetc> \
         -DHG_VIDEO_STREAM_PLUGIN=<plugin filepath> \
         -DCMAKE_INSTALL_PREFIX=<install path>

Once the build is complete, the installation directory should contain all the required shared libraries and an executable binary names hg_vid_play.

hg_vid_play movie.mp4

test program screenshot
video source

● Lua sample

The test directory also contains a lua script (main.lua). This script maps a video stream onto a spinning cube.
Note that you need the Harfang 3D lua 5.3 to run it.

GitHub

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