ืžืขืœื“ื•ื ื’ ืคื•ืŸ dav1d 0.7, ืึทืŸ AV1 ื“ื™ืงืึธื•ื“ืขืจ ืคึฟื•ืŸ ื“ื™ VideoLAN ืื•ืŸ FFmpeg ืคึผืจืึทื“ื–ืฉืขืงืก

VideoLAN ืื•ืŸ FFmpeg ืงื”ื™ืœื•ืช ืืจื•ื™ืก ืžืขืœื“ื•ื ื’ ืคื•ืŸ ื“ื™ dav1d 0.7.0 ื‘ื™ื‘ืœื™ืึธื˜ืขืง ืžื™ื˜ ื“ื™ ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ ืึทืŸ ืึธืœื˜ืขืจื ืึทื˜ื™ื•ื• ืคืจื™ื™ ื•ื•ื™ื“ืขื ืงืึธื“ื™ืจื•ื ื’ ืคึฟืึธืจืžืึทื˜ ื“ืขืงืึธื“ืขืจ ืึทื•ื•ืงืกื ื•ืžืงืก. ื“ื™ ืคึผืจื•ื™ืขืงื˜ ืงืึธื“ ืื™ื– ื’ืขืฉืจื™ื‘ืŸ ืื™ืŸ C (C99) ืžื™ื˜ ืคึฟืึทืจื–ืึทืžืœื•ื ื’ ื™ื ืกืขืจืฅ (NASM / GAS) ืื•ืŸ ืคื•ื ืื ื“ืขืจื’ืขื˜ื™ื™ืœื˜ ื“ื•ืจืš ืื•ื ื˜ืขืจ BSD ื“ืขืจืœื•ื™ื‘ืขื ื™ืฉ. ืฉื˜ื™ืฆืŸ ืคึฟืึทืจ ืงืก86, ืงืก86_64, ARMv7 ืื•ืŸ ARMv8 ืึทืจืงืึทื˜ืขืงื˜ืฉืขืจื–, ืื•ืŸ ืœื™ื ื•ืงืก, ื•ื•ื™ื ื“ืึธื•ื–, ืžืึทืงืึธืก, ืึทื ื“ืจื•ื™ื“ ืื•ืŸ ื™ืึธืก ืึธืคึผืขืจื™ื™ื˜ื™ื ื’ ืกื™ืกื˜ืขืžืขืŸ ืื™ื– ื™ืžืคึผืœืึทืžืขื ืึทื“.

ื“ื™ ื“ืึทื•ื•1ื“ ื‘ื™ื‘ืœื™ืึธื˜ืขืง ืฉื˜ื™ืฆื˜ ืึทืœืข AV1 ืคึฟืขื™ึดืงื™ื™ื˜ืŸ, ืึทืจื™ื™ึทื ื’ืขืจืขื›ื ื˜ ืึทื•ื•ืึทื ืกื™ืจื˜ืข ืงื•ืงืŸ ืกื•ื‘ืกืึทืžืคึผืœื™ื ื’ ืื•ืŸ ืึทืœืข ืงืึธืœื™ืจ ื˜ื™ืคืงื™ื™ึทื˜ ืงืึธื ื˜ืจืึธืœ ืคึผืึทืจืึทืžืขื˜ืขืจืก ืกื˜ื™ื™ื˜ื™ื“ ืื™ืŸ ื“ื™ ื‘ืึทืฉืจื™ื™ึทื‘ื•ื ื’ (8, 10 ืื•ืŸ 12 ื‘ื™ื˜ืŸ). ื“ื™ ื‘ื™ื‘ืœื™ืึธื˜ืขืง ืื™ื– ื˜ืขืกื˜ืขื“ ืื•ื™ืฃ ืึท ื’ืจื•ื™ืก ื–ืึทืžืœื•ื ื’ ืคื•ืŸ ื˜ืขืงืขืก ืื™ืŸ AV1 ืคึฟืึธืจืžืึทื˜. ื“ืขืจ ืฉืœื™ืกืœ ืฉื˜ืจื™ืš ืคื•ืŸ dav1d ืื™ื– ื–ื™ื™ืŸ ืคืึธืงื•ืก ืื•ื™ืฃ ื“ืขืจื’ืจื™ื™ื›ืŸ ื“ื™ ื”ืขื›ืกื˜ืŸ ืžืขื’ืœืขืš ื“ื™ืงืึธื•ื“ื™ื ื’ ืคืึธืจืฉื˜ืขืœื•ื ื’ ืื•ืŸ ื™ื ืฉื•ืจื™ื ื’ ื”ื•ื™ืš-ืงื•ื•ืึทืœื™ื˜ืขื˜ ืึทืจื‘ืขื˜ ืื™ืŸ ืžื•ืœื˜ื™-ื˜ืจืขื“ื™ื“ ืžืึธื“ืข.

ะ’ ื ื™ื™ึท ื•ื•ืขืจืกื™ืข:

  • ื“ื™ ืคืึธืจืฉื˜ืขืœื•ื ื’ ืคื•ืŸ ื“ื™ ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ ืจืขืžื•ื• (ื“ื™ื ืึทืžื™ืฉ ืจืขืคืขืจืขื ืฅ ืžืึธื˜ื™ืึธืŸ ื•ื•ืขืงื˜ืึธืจ ืคึผืจืึธื’ื ืึธื–) ืื™ื– ื’ืขื•ื•ืืงืกืŸ ืžื™ื˜ ื‘ืขืขืจืขืš 12% ื‘ืฉืขืช ืจื™ื“ื•ืกื™ื ื’ ื–ื›ึผืจื•ืŸ ืงืึทื ืกืึทืžืฉืึทืŸ ืžื™ื˜ ื‘ืขืขืจืขืš 25%;
  • ื“ื™ ื™ืžืคึผืœืึทืžืขื ื˜ื™ื™ืฉืึทืŸ ืคื•ืŸ ARM64 ืึทืจืงืึทื˜ืขืงื˜ืฉืขืจ-ืกืคึผืขืฆื™ืคื™ืฉ ืึธืคึผื˜ื™ืžื™ื–ืึทื˜ื™ืึธื ืก ืื™ื– ื›ึผืžืขื˜ ื’ืึทื ืฅ, ืงืึทื•ื•ืขืจื™ื ื’ ืคื™ืœืข ืึทืคึผืขืจื™ื™ืฉืึทื ื– ื•ื•ืขืŸ ืืจื‘ืขื˜ืŸ ืžื™ื˜ ืงืึธืœื™ืจ ื˜ื™ืคืขื ื™ืฉืŸ ืคื•ืŸ 8, 10 ืื•ืŸ 12 ื‘ื™ื˜ืŸ;
  • ืฆื•ื’ืขืœื™ื™ื’ื˜ CDEF ืคื™ืœื˜ืขืจ ืžื™ื˜ AVX-512 ื™ื ืกื˜ืจืึทืงืฉืึทื ื–;
  • ืฆื•ื’ืขืœื™ื™ื’ื˜ ื ื™ื™ึทืข ืึทืคึผื˜ืึทืžืึทื–ื™ื™ืฉืึทื ื– ื‘ืื–ื™ืจื˜ ืื•ื™ืฃ AVX2 ืื•ืŸ SSSE3 ื™ื ืกื˜ืจืึทืงืฉืึทื ื–;
  • ื“ื™ dav1dpla ื ื•ืฆืŸ ื”ืื˜ ื™ืžืคึผืจื•ื•ื•ื“ ืฉื˜ื™ืฆืŸ ืคึฟืึทืจ ืืจื‘ืขื˜ืŸ ืžื™ื˜ 10-ื‘ื™ืกืœ ืงืึธืœื™ืจ ื˜ื™ืคืงื™ื™ึทื˜, ื ื™ื˜-4: 2: 0 ืคึผื™ืงืกืขืœ ืคืึธืจืžืึทืฅ ืื•ืŸ ื“ื™ื’ื™ื˜ืึทืœ ืจืึทืฉ ืกืึทืคึผืจืขืฉืึทืŸ ืื•ื™ืฃ ื“ื™ ื’ืคึผื•.

ืฆื•ืจื™ืงืจื•ืคืŸ ืึทื– ื“ื™ ื•ื•ื™ื“ืขื ืงืึธื“ืขืง ืึทื•ื•ืงืกื ื•ืžืงืก ื“ืขื•ื•ืขืœืึธืคึผืขื“ ื“ื•ืจืš ื‘ื•ื ื“ ืขืคึฟืŸ ืžืขื“ื™ืข (AOMedia), ื•ื•ืึธืก ืคึฟืขื™ึดืงื™ื™ื˜ืŸ ืงืึธืžืคึผืึทื ื™ืขืก ืึทื–ืึท ื•ื•ื™ ืžืึธื–ื™ืœืœืึท, Google, ืžื™ื™ืงืจืึธืกืึธืคึฟื˜, ื™ื ื˜ืขืœ, ARM, NVIDIA, IBM, Cisco, Amazon, Netflix, AMD, VideoLAN, Apple, CCN ืื•ืŸ Realtek. AV1 ืื™ื– ืคึผืึทื–ื™ืฉืึทื ื“ ื•ื•ื™ ืึท ืขืคื ื˜ืœืขืš ื‘ื ื™ืžืฆื, ืžืึทืœื›ืขืก-ืคืจื™ื™ ื•ื•ื™ื“ืขื ืงืึธื“ื™ืจื•ื ื’ ืคึฟืึธืจืžืึทื˜ ื•ื•ืึธืก ืื™ื– ื ืึธื•ื˜ื™ืกืึทื‘ืœื™ ืคืึธืจื•ื™ืก ืคื•ืŸ H.264 ืื•ืŸ VP9 ืื™ืŸ ื˜ืขืจืžื™ื ืขืŸ ืคื•ืŸ ืงืึทืžืคึผืจืขืฉืึทืŸ ืœืขื•ื•ืขืœืก. ืื™ื‘ืขืจ ื“ื™ ืงื™ื™ื˜ ืคื•ืŸ ื˜ืขืกื˜ืขื“ ืจืขื–ืึทืœื•ืฉืึทื ื–, ืื™ืŸ ื“ื•ืจื›ืฉื ื™ื˜ืœืขืš AV1 ื“ื™ืœื™ื•ื•ืขืจื– ื“ื™ ื–ืขืœื‘ืข ืžื“ืจื’ื” ืคื•ืŸ ืงื•ื•ืึทืœื™ื˜ืขื˜ ื‘ืฉืขืช ืจื™ื“ื•ืกื™ื ื’ ื‘ื™ื˜ืจืึทื˜ืขืก ืžื™ื˜ 13% ืงืึทืžืคึผืขืจื“ ืฆื• VP9 ืื•ืŸ 17% ื ื™ื“ืขืจื™ืงืขืจ ื•ื•ื™ HEVC. ื‘ื™ื™ ื”ื•ื™ืš ื‘ื™ื˜ืจืึทื˜ืขืก, ื“ื™ ื’ืขื•ื•ื™ื ืก ื™ื ืงืจื™ืกื™ื– ืฆื• 22-27% ืคึฟืึทืจ VP9 ืื•ืŸ ืฆื• 30-43% ืคึฟืึทืจ HEVC. ืื™ืŸ ืคืึทืกืขื‘ืึธืึธืง ื˜ืขืกืฅ, AV1 ืึทื•ื˜ืคึผืขืจืคืึธืจืžื“ ื“ื™ ื”ื•ื™ืคึผื˜ ืคึผืจืึธืคื™ืœ H.264 (x264) ืžื™ื˜ 50.3% ืื™ืŸ ื˜ืขืจืžื™ื ืขืŸ ืคื•ืŸ ืงืึทืžืคึผืจืขืฉืึทืŸ ืžื“ืจื’ื”, ื”ื•ื™ืš ืคึผืจืึธืคื™ืœ H.264 ื“ื•ืจืš 46.2%, ืื•ืŸ VP9 (libvpx-vp9) ืžื™ื˜ 34.0%.

ืžืงื•ืจ: opennet.ru

ืœื™ื™ื’ืŸ ืึท ื‘ืึทืžืขืจืงื•ื ื’