gentoo ~ # emerge --search '^ffmpeg$' '^mplayer$'
Searching...   
[ Results for search key : ^ffmpeg$ ]
[ Applications found : 1 ]
 
*  media-video/ffmpeg
      Latest version available: 0.4.9_p20050906
      Latest version installed: 0.4.9_p20050906
      Size of downloaded files: 1,632 kB
      Homepage:    http://ffmpeg.sourceforge.net/
      Description: Complete solution to record, convert and stream audio and video. Includes libavcodec.
      License:     GPL-2


Searching...   
[ Results for search key : ^mplayer$ ]
[ Applications found : 1 ]
 
*  media-video/mplayer
      Latest version available: 1.0_pre7-r1
      Latest version installed: 1.0_pre7-r1
      Size of downloaded files: 7,621 kB
      Homepage:    http://www.mplayerhq.hu/
      Description: Media Player for Linux
      License:     GPL-2


gentoo ~ #