Packages with the vpx use flag

dev-lang / php : The PHP language runtime engine

Enable webp support for GD in php-5.x

games-fps / eduke32 : An open source engine port of the classic PC first person shooter Duke Nukem 3D

Enable support for media-libs/libvpx.

media-libs / avidemux-plugins : Plugins for the video editor media-video/avidemux

Enable WebM VP8 Codec SDK support via media-libs/libvpx.

media-libs / libopenglrecorder : Library for asynchronous OpenGL recording with audio

Enable VP8/VP9 codec support via media-libs/libvpx

media-libs / xine-lib : Core libraries for Xine movie player

Enable VP8 codec support via media-libs/libvpx.

media-plugins / gst-plugins-meta : Meta ebuild to pull in gst plugins for apps

Enables vp8 codec support using libvpx, required to play some HTML5 videos

media-tv / tvheadend : Tvheadend is a TV streaming server and digital video recorder

Enable transcoding with the VP8/VP9 video codecs

media-video / ffmpeg : Complete solution to record, convert and stream audio and video. Includes libavcodec

Enables vp8 codec support using libvpx: Decoding vp8 does not require this to be enabled but libvpx can also be used for decoding; encoding vp8 requires this useflag to be enabled though.

media-video / libav : Complete solution to record, convert and stream audio and video

Enable vp8 encoding support using media-libs/libvpx.

media-video / simplescreenrecorder : A Simple Screen Recorder

Enable VP8 codec support via media-libs/libvpx.

media-video / vlc : Media player and framework with support for most multimedia files and streaming

Enable the decoder(s) from the WebM VP8 / VP9 Codec SDK

net-libs / qxmpp : A cross-platform C++ XMPP client library based on the Qt framework

Enable VP8 codec support via media-libs/libvpx

x11-wm / xpra : X Persistent Remote Apps (xpra) and Partitioning WM (parti) based on wimpiggy

Enable vpx image format support