Red5 Documentation

Red5 Pro Core SDK Customizations

The Red5 Pro Core SDK was created to allow developers the flexibility to target specific hardware by creating their own FFmpeg builds.

Hardware Acceleration

CUDA Toolkit

(v11.7 or later)

To build FFmpeg with CUDA support, for Windows:

  1. Download and install CUDA from this site. (Note: make sure that your installation path does not include any spaces)
  2. Add the folders to your SYSTEM PATH (for example: D:\sdks\cuda\v11.7\libnvvp;D:\sdks\cuda\v11.7\bin;D:\sdks\cuda\v11.7\lib\x64) )
  3. Now, you have to install some headers required by FFmpeg.

Open the MSYS2 shell from its installation folder, and run the following:

msys2_shell.cmd -mingw64 -use-full-path
git clone
cd nv-codec-headers
make install

For FFmpeg v4.4.1 (recommended at the time of this documentation)

git clone ffmpeg_4.1.1 && cd ffmpeg_4.4.1 && git checkout tags/n4.4.1 -b v4.4.1

export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/d/<you_path_where_installed>/openh264/v2.3.0/lib/pkgconfig:/usr/local/lib/pkgconfig

./configure --prefix=/d/<your_path>/sdks/ffmpeg/v4.4.1 --enable-shared --disable-debug --disable-lzma --disable-iconv --disable-bzlib --disable-sdl2 --enable-libopenh264 --enable-dxva2 --enable-d3d11va --enable-libmfx --enable-cuda --enable-cuda-llvm --enable-cuvid --enable-libnpp --enable-nonfree --extra-cflags=-I/d/<your_path>/sdks/cuda/v11.7/include --extra-ldflags=-L/d/sdks/cuda/v11.7/lib/x64 > ffmpeg_v4.4.1.config

Make sure there are no errors in ffmpeg_v4.4.1.config.

make && make install && cp ffmpeg_v4.4.1.config /d/<your_path>/sdks/ffmpeg/v4.4.1/

Copy the following files from the appropriate locations, built and installed before, to /d/<your_path>/sdks/ffmpeg/v4.4.1/:

zlib1.dll (from mingw)
libwinpthread-1.dll (from mingw)