FFmpeg for Euterpe: uncompress ffmpeg-3.4.11.tar.gz and then copy shell
scripts in FFmpeg root directory and execute them from there with:

	sh make_ffmpeg_win_x86.sh
or
	sh make_ffmpeg_win_x64.sh
or
	sh make_ffmpeg_linux_i686.sh
or
	sh make_ffmpeg_linux_amd64.sh

binaries will be placed in the corresponding directory:

	ffmpeg-win-x86/
or
	ffmpeg-win-x64/
or
	ffmpeg-linux-i686/
or
	ffmpeg-linux-amd64/

Thanks to all FFmpeg team for the valuable contribution.
