Yeah, me too.
I totally agree that there are plenty of (really lame) plug-in scripts around that rely on ffmpeg-php to function correctly, but your initial response assumes OP implicitly requires ffmpeg-php - which is not ffmpeg. Anyone searching for ffmpeg could be led to the same false assumption that they require ffmpeg-php to do anything revolving around ffmpeg or ffmpeg path problems as described in the Post Title.
Good scripts do not require ffmpeg-php. You know that