It seems like the version of FFMPEG that I am using on projects is never that same version covered in the documentation on the website. You can get version specific documentation with FFMPEG from the console with the -h argument.
You can dump the ffmpeg documentation to a text file for easier reading and searching by redirecting the output.
ffmpeg -h > c:\temp\ffmpeg.txt
You can also view a list of the supported codecs for your version of FFMPEG
ffmpeg -codec > c:\temp\supportedCodecs.txt