ffmpeg-chromium

USE flags

• cpu_flags_arm_neon - Use the NEON (ASIMD) instruction set
• cpu_flags_arm_thumb - Enable Thumb instruction set (ARMv*T and ARMv6+)
• cpu_flags_arm_thumb2 - Enable Thumb-2 instruction set (ARMv*T2 and ARMv7+)
• cpu_flags_arm_v6 - Use instructions added in ARMv6
• cpu_flags_arm_v8 - Use instructions added in ARMv8
• cpu_flags_arm_vfp - Use the VFP version 2 instruction set
• cpu_flags_arm_vfpv3 - Use the VFP version 3 instruction set
• cpu_flags_x86_3dnow - Use the 3DNow! instruction set
• cpu_flags_x86_3dnowext - Use the Enhanced 3DNow! instruction set
• cpu_flags_x86_aes - Enable support for Intel's AES instruction set (AES-NI)
• cpu_flags_x86_avx - Adds support for Advanced Vector Extensions instructions
• cpu_flags_x86_avx2 - Adds support for Advanced Vector Extensions 2 instructions
• cpu_flags_x86_fma3 - Use the Fused Multiply Add 3 instruction set ([fma] in cpuinfo)
• cpu_flags_x86_fma4 - Use the Fused Multiply Add 4 instruction set
• cpu_flags_x86_mmx - Use the MMX instruction set
• cpu_flags_x86_mmxext - Use the Extended MMX instruction set (a subset of SSE) ([mmxext] or [sse] in cpuinfo)
• cpu_flags_x86_sse - Use the SSE instruction set
• cpu_flags_x86_sse2 - Use the SSE2 instruction set
• cpu_flags_x86_sse3 - Use the SSE3 instruction set ([pni] in cpuinfo, NOT ssse3)
• cpu_flags_x86_sse4_1 - Enable SSE4.1 instruction support
• cpu_flags_x86_sse4_2 - Enable SSE4.2 instruction support
• cpu_flags_x86_ssse3 - Use the SSSE3 instruction set (NOT sse3/pni)
• cpu_flags_x86_xop - Enable the XOP instruction set
• cpudetection - Enables runtime CPU detection (useful for bindist, compatibility on other CPUs)
• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• gpl - Build GPL code. Should be enabled unless you require LGPL binaries.
• mmal - Enables Multi-Media Abstraction Layer (MMAL) decoding support: Available e.g. on the Raspberry Pi.
• nvenc - Add support for NVIDIA Encoder/Decoder (NVENC/NVDEC) API for hardware accelerated encoding and decoding on NVIDIA cards (requires x11-drivers/nvidia-drivers)
• opus - Enable Opus audio codec support
• threads - Add threads support for various packages. Usually pthreads
• vaapi - Enable Video Acceleration API for hardware decoding
• vdpau - Enable the Video Decode and Presentation API for Unix acceleration interface
• video_cards_nvidia - VIDEO_CARDS setting to build driver for nvidia video cards
• vulkan - Add support for 3D graphics and computing via the Vulkan cross-platform API