FFMPEG: Finding specific encoder and decoder options

The following was taken from here: https://stackoverflow.com/questions/3377300/what-are-all-codecs-and-formats-supported-by-ffmpeg

Formats (muxers and demuxers):

List all formats:
ffmpeg -formats
Display options specific to, and information about, a particular muxer:
ffmpeg -h muxer=matroska
Display options specific to, and information about, a particular demuxer:
ffmpeg -h demuxer=gif

Codecs (encoders and decoders):

List all codecs:
ffmpeg -codecs
List all encoders:
ffmpeg -encoders
List all decoders:
ffmpeg -decoders
Display options specific to, and information about, a particular encoder:
ffmpeg -h encoder=mpeg4
Display options specific to, and information about, a particular decoder:
ffmpeg -h decoder=aac

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