video media-video@gentoo.org Enable manually-optimised routines using the AMD 3DNow!Ex SIMD instruction set, present in modern AMD CPUs. (Check for 3dnowext in /proc/cpuinfo to know whether your CPU supports it). Enables media-libs/libass based subtitle renderer. AAC+ encoding via media-libs/libaacplus. Enables Adaptive Multi-Rate Audio support Build and install avconv, an alternative command line tool to ffmpeg from media-video/libav. Adds support for Advanced Vector Extensions instructions (Intel Sandy Bridge, AMD Bulldozer and later chips) Enables audio CD grabbing with dev-libs/libcdio. Adds Xiph CELT audio decoding support via media-libs/celt Enables runtime CPU detection (useful for bindist, compatibility on other CPUs) Enable Dirac video support (an advanced royalty-free video compression format) via the reference library: dirac. Use external faac library for AAC encoding Enable frei0r wrapping in libavfilter Use pre-calculated tables rather than calculating them on the fly. Uses media-libs/libv4l for video4linux instead of direct calls. Adds support for more devices via the userspace library. Enables mmx2 support Enables network streaming support Enables dev-libs/openssl support. Adds support for encrypted network protocols (TLS/HTTPS). Force shared libraries to be built as PIC (this is slower) Build and install qt-faststart application Enable Real Time Messaging Protocol using librtmp Enable Dirac video support (an advanced royalty-free video compression format) via libschroedinger (high-speed implementation in C of the Dirac codec). faster floating point optimization for SSSE3 capable chips (Intel Core 2 and later chips) Enables VAAPI (Video Acceleration API) for hardware decoding Enables VDPAU decoders (requires nVidia video cards and binary nvidia-drivers to offload CPU processing to video card) Adds support for SIMD optimizations for UltraSPARC processors. 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.