[Ffmpeg-user] So much undocumented option - where is help?

Hi, playing around with ffmpeg and reading both of its mailing lists I come across so many options that are not in the "official documentation": http://ffmpeg.mplayerhq.hu/ffmpeg-doc.html And even not in the man pages (Linux). Only if I promt "ffmpeg" with no option, it seems to list all possible options and switches, but most only have "e.v." as an explanation. Is there something I missed? Where can I find more info? This is really frustrating. thanks, Rob _____________________________________________________________________ Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! http://smartsurfer.web.de/?mc=100071&distributionid=000000000066