x265

H.265

• http://x265.org/
• http://www.videohelp.com/tools/x265-Encoder/version-history

usage

$ hg clone https://bitbucket.org/multicoreware/x265
$ cd x265/build/linux
$ ./make-Makefiles.bash
$ make

rate control

• Understanding Rate Control Modes (x264, x265, vpx)
  • https://slhck.info/video/2017/03/01/rate-control.html
• x265/CRF

開発

• Preset
  • http://x265.readthedocs.io/en/default/presets.html
• Lossless
  • http://x265.readthedocs.io/en/default/lossless.html

ffmpeg

• https://trac.ffmpeg.org/wiki/Encode/H.265

その他

• [media-types] registeration of H265 media subtype for High Efficiency Video Coding (H.265) payload format
  • https://www.ietf.org/mail-archive/web/media-types/current/msg00588.html

    video/H.256

• x265 2.7+336 AVX512対応の効果
  • https://rigaya34589.blog.fc2.com/blog-entry-1017.html

    asm avx512 を渡すと単に CPU が対応してない時に警告を出すだけに見える(機能を使うかは自動判定？)。有効だと 5%〜10%ほど高速化されるらしい

関連

• x262 | x264

• HEVC
• FFmpeg
• HEIF