| USE Flags |
|---|
| Flag | scope | Description |
| X | Global | Adds support for X11 |
| 3dnow | Global | Adds support for 3dnow multimedia processor instructions |
| a52 | Global | Enables support for decoding ATSC A/52 streams used in DVD |
| aac | Global | Enables support for MPEG-4 AAC Audio |
| alsa | Global | Adds support for media-libs/alsa-lib (Advanced Linux Sound Architecture) |
| altivec | Global | Adds support for optimizations for G4 and G5/ppc970 processors |
| dv | Global | Enables support for a codec used by many camcorders |
| dvdread | Global | Enables usage of Ogle's libdvdread for DVD playback |
| iconv | Global | Enable support for the iconv character set conversion library |
| imagemagick | Global | Enables support for Imagemagick (image converter) |
| jpeg | Global | Adds JPEG image support |
| lzo | Global | Enables support for lzo compression |
| mjpeg | Global | Enables mjpegtools support |
| Local | Enables mjpegtools support |
| mp3 | Global | Add support for reading mp3 files |
| mmx | Global | Adds support for optimizations for Pentium MMX and Athlon class processors |
| nuv | Global | NuppelVideo container format demuxing |
| Local | NuppelVideo container format demuxin |
| ogg | Global | Adds support for the Ogg container format (commonly used by Vorbis, Theora and flac) |
| oss | Global | Adds support for OSS (Open Sound System) |
| postproc | Global | Build with ffmpeg libpostproc support |
| Local | Build with ffmpeg libpostproc support |
| quicktime | Global | Adds support for OpenQuickTime |
| sdl | Global | Adds support for Simple Direct Layer (media library) |
| sse | Global | fast floating point optimization for PentiumIII+ class chips |
| sse2 | Global | faster floating point optimization for SSE2 capable chips |
| theora | Global | Adds support for the Theora Video Compression Codec |
| truetype | Global | Adds support for FreeType and/or FreeType2 fonts |
| v4l2 | Global | Enable video4linux2 support |
| vorbis | Global | Adds support for the OggVorbis audio codec |
| x264 | Global | Enable h264 encoding using x264 |
| xvid | Global | Adds support for xvid.org's open-source mpeg-4 codec |
| xml | Global | Add support for XML files |
| extrafilters | Global | Install some filters only if we ask for them |
| Local | Install some filters only if we ask for them |
| fame | Global | Enables libfame support |
| Local | Enables libfame support |
| mpeg | Global | Adds libmpeg3 support to various packages |
| network | Global | Enables network streaming support |
| Local | Enables network streaming support |
