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Les articles publiés sur le site

• arm/aarch64 : use plane_copy wrapper macros

  26 août 2016, par Janne Grunau

  arm/aarch64: use plane_copy wrapper macros
  
  Move the macros to common/mc.h to share them across all architectures.
  Fixes possible buffer overreads if the width of the user supplied frames
  is not a multiple of 16.
  
  Reported-by: Kirill Batuzov <batuzovk@ispras.ru>
  

  • [DH] common/aarch64/mc-a.S
  • [DH] common/aarch64/mc-c.c
  • [DH] common/arm/mc-a.S
  • [DH] common/arm/mc-c.c
  • [DH] common/mc.h
  • [DH] common/x86/mc-c.c

• Various cosmetics of semicolon use

  18 août 2016, par Anton Mitrofanov

  Various cosmetics of semicolon use
  

  • [DH] common/mips/mc-c.c
  • [DH] common/mvpred.c
  • [DH] common/ppc/quant.c
  • [DH] encoder/cabac.c
  • [DH] encoder/macroblock.c
  • [DH] filters/filters.c
  • [DH] filters/video/crop.c
  • [DH] filters/video/depth.c
  • [DH] filters/video/internal.c
  • [DH] filters/video/resize.c
  • [DH] filters/video/select_every.c
  • [DH] input/avs.c
  • [DH] input/ffms.c
  • [DH] input/lavf.c
  • [DH] input/raw.c
  • [DH] input/thread.c
  • [DH] input/timecode.c
  • [DH] input/y4m.c
  • [DH] output/matroska_ebml.c
  • [DH] output/mp4.c
  • [DH] output/mp4_lsmash.c
  • [DH] tools/checkasm.c
  • [DH] x264.c
  • [DH] x264cli.h

• avs : support for AviSynth+ high bit-depth pixel formats

  18 août 2016, par Anton Mitrofanov

  avs: support for AviSynth+ high bit-depth pixel formats
  

  • [DH] extras/avisynth_c.h
  • [DH] input/avs.c

• cli : Prefetch yuv/y4m input frames on Windows 8 and newer

  28 juillet 2016, par Henrik Gramner

  cli: Prefetch yuv/y4m input frames on Windows 8 and newer
  
  Use PrefetchVirtualMemory() (if available) on memory-mapped input frames.
  
  Significantly improves performance when the source file is not already
  present in the OS page cache by asking the OS to bring in those pages from
  disk using large, concurrent I/O requests.
  
  Most beneficial on fast encoding settings. Up to 40% faster overall with
  --preset ultrafast, and up to 20% faster overall with --preset veryfast.
  
  This API was introduced in Windows 8, so call it conditionally. On older
  Windows systems the previous behavior remains unchanged.
  

  • [DH] input/avs.c
  • [DH] input/ffms.c
  • [DH] input/input.c
  • [DH] input/input.h

• Adjust —preset slow

  28 juillet 2016, par Henrik Gramner

  Adjust --preset slow
  
   * Swap --me umh for --trellis 2. They have a similar effect on performance
     but the latter gives slightly better results in most cases.
   * Change --b-adapt from 2 to 1. Negligible difference in quality since the
     b-adapt 1 improvements, but it's significantly faster.
  
  Also remove a redundant assignment from veryfast (--me hex is set by default).
  

  • [DH] common/common.c