ffmpeg-prebuilt v2.7.2-1

Install ffmpeg prebuilt binaries.

$ npm i --save ffmpeg-prebuilt

$ node
> require('ffmpeg-prebuilt');
{ ffserver: '/Users/poying/Workspace/node/ffmpeg-prebuilt/files/ffserver',
  ffprobe: '/Users/poying/Workspace/node/ffmpeg-prebuilt/files/ffprobe',
  ffmpeg: '/Users/poying/Workspace/node/ffmpeg-prebuilt/files/ffmpeg' }