[DOCUMENTATION] Missing documentation for option -g

[matteosistisette]

​http://www.ffmpeg.org/ffmpeg.html

There exists a -g option which appears in two example commands in the above documentation page; however, there's no documentation whatsoever about this option. Maybe it's an alias for an option that has also another name, but searching the page for "-g" gives no results other than the examples, and one can't be supposed to read the whole documentation to find out what option -g is an alias for (if this is the case)

[Stefano Sabatini]

Replying to matteosistisette:

​http://www.ffmpeg.org/ffmpeg.html

There exists a -g option which appears in two example commands in the above documentation page; however, there's no documentation whatsoever about this option. Maybe it's an alias for an option that has also another name, but searching the page for "-g" gives no results other than the examples, and one can't be supposed to read the whole documentation to find out what option -g is an alias for (if this is the case)

g is an option documented in the Codec Options sections, which you can find in ffmpeg-all(1) or ffmpeg-codecs(1). FFmpeg is a complex project and you need to know where to look for when you're looking for a specific option. Using a more descriptive name such as gop_size may help though.