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• Revision 53ff43adc3 : Prunes out full-rd computation based on modeled rd Adds a speed feature to elim

  9 juillet 2013, par Deb Mukherjee

  Changed Paths :
   Modify /vp9/common/vp9_blockd.h

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_onyx_int.h

  
   Modify /vp9/encoder/vp9_rdopt.c

  
  
  Prunes out full-rd computation based on modeled rd

  Adds a speed feature to eliminate full-rd computation if the modeled
  rd or rd based on a different parameter in the same mode is already
  a lot larger than the best rd yet.

  Specifically, only search the sharp and smooth filters if the modeled
  rd cost based on the regular filter is within a certain factor of the
  best rd cost so far. Also, skip full-rd computation of non splitmv
  inter modes if the modeled rd cost based on pred error is within the
  same factor of the best rd cost so far.

  Also adds some enhancements in the rd search for splitmv mode to
  speed things up by early breakouts. Negligible impact on performance.

  Resuts on derfraw300 :
  psnr : -0.013% with the splitmv enhancements, -0.24% with the rd
  breakout feature on.
  speedup : 6% with splitmv enhancements, 20% with also residual breakout
  (tested on football sequence at 600 Kbps)

  Change-Id : I37abc308ea9f110c1679ce649b6a7e73ab1ad5fc

• FFMPEG 'Invalid data found when processing input' while scaling an Image

  22 février 2020, par priya verma

  I just installed FFMPEG on a server and I am testing it to see if it works. I am new to this, so I don’t know if I’m doing it correctly. I want to scale and compress an image. I am doing it by following php code -

  exec("ffmpeg -i $inputImg -vf \"scale='-2':'min(480, ih)\" $outputImg 2>&1", $output, $returnStatus);
  
      print_r($output);
  
      echo '<br />'.$returnStatus;

  The thing is it works for some images and for images it gives an error. For ex. I have tried to compress an image and it returns with error -

  ffmpeg version 2.8.15 Copyright (c) 2000-2018 the FFmpeg developers
  
  [1] => built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-36)
  
  [2] => configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg 
  
  --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man 
  
  --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions 
  
  -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 
  
  -mtune=generic' --extra-ldflags='-Wl,-z,relro ' --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 
  
  --enable-bzlib --disable-crystalhd --enable-gnutls --enable-ladspa 
  
  --enable-libass --enable-libcdio --enable-libdc1394 --enable-libfdk-aac 
  
  --enable-nonfree --disable-indev=jack --enable-libfreetype --enable-libgsm 
  
  --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-libopus 
  
  --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex 
  
  --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264 
  
  --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter 
  
  --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping 
  
  --shlibdir=/usr/lib64 --enable-runtime-cpudetect 
  
  [3] => libavutil 54. 31.100 / 54. 31.100 
  
  [4] => libavcodec 56. 60.100 / 56. 60.100 
  
  [5] => libavformat 56. 40.101 / 56. 40.101 
  
  [6] => libavdevice 56. 4.100 / 56. 4.100 
  
  [7] => libavfilter 5. 40.101 / 5. 40.101 
  
  [8] => libavresample 2. 1. 0 / 2. 1. 0 
  
  [9] => libswscale 3. 1.101 / 3. 1.101 
  
  [10] => libswresample 1. 2.101 / 1. 2.101 
  
  [11] => libpostproc 53. 3.100 / 53. 3.100 
  
  [12] => /tmp/phpjLYmRd: Invalid data found when processing input

  Am I doing it incorrectly or what ? Because it does work with some images and for some it doesn’t ! Also, is this the correct way to scale and compress an Image using FFMPEG, would love to get some insights.

• how can I get the compression progress percentange using arthenica.ffmpegkit ?

  28 février 2023, par user44551

  I have an app in Kotlin to compress a video using arthenica.ffmpegkit. I searched in the documentation but it's not clear to me how to get the compression progress in percentage or even if it's possible.