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• Anomalie #4425 (Nouveau) : Des bots chinois comptabilisés dans les statistiques

  21 janvier 2020

  Bonjour,

  Je reporte ici un message trouvé sur la liste user.

  Le fichier /ecrire/inc_version.php inclut un certain nombre de bots à ne pas comptabiliser. Je suggère d’ajouter une liste de bots chinois et russes :
  Mb2345Browser
  LieBaoFast
  zh-CN
  MicroMessenger
  zh_CN
  Kinza

  Ces bots explosent littéralement mes stats avec des dizaines de milliers de visites comptabilisées.

  J’ai fait l’ajout manuellement mais la prochaine mise-à-jour de SPIP les effacera.

  Merci

  Guilain

  Au passage, je suggère de faire comme avec : https://zone.spip.net/trac/spip-zone/browser/spip-zone/_core_/plugins/statistiques/engines-list.txt
  Donc, une liste qui soit maintenue dans un fichier texte, facile à mettre à jour.

• Graphics Magick output wrong colour when converting png to jpeg node js

  13 mai 2016, par Craig Wheatley

  Background is, I’m splitting a video (mp4, mov) into PNG frames using FFMPEG, then converting those to jpeg with GraphicsMagick.

  So I’m using GraphicsMagick in NodeJS, from here and below is a snippet :

  var gm = require('gm').subClass({imageMagick: true});
  
  
  
  gm('input.png')
  
  .write('output.jpg', (err) => {
  
    if (err) return console.log(err);
  
    console.log('done');
  
  });

  But the output jpeg colour is either washed out, or too dark.
  See here for the output. The original video is left (mov) and the converted JPEG’s are middle and right.
  The middle one, is the node app running on Heroku and the right image is the node app on my osx machine.

  I’ve read it could be to do with ’profiles’ but this doesn’t seem to make a difference :

  .profile('sRGB.icc')

  ’sRGB.icc’ is a colour profile I’ve downloaded.

  Any ideas ?

  I’ve also tried setting the colours amount to 16,777,216, tried setting the bit depth to 8 and 16, tried setting the colourspace to ’rgb’ to no avail.

• Is there a way to use pdf images with the saveVideo function of R's animation package ?

  11 avril 2023, par Hullaballoon

  I've created a few MP4 files using the saveVideo function in the animation package, but the colours are relatively dull in one of them. I've compared the output of one of the images in the animation by producing a PNG and a PDF, with the colours in the PDF appearing much bolder. I was hoping to code the images as PDFs within the animation to see if it improves the output, but I am getting stuck with a message "Rplot.pdf : Invalid data found when processing input" and no MP4 being produced.

  


  The internal code of the saveVideo function implies that PDF images can be used with the following :

  


  num = ifelse(file.ext == "pdf", "", ani.options("imgnfmt"))


  


  Here's a toy example that demonstrates the issue. This works fine :

  


  library(animation)
saveVideo({
  darkcol = "#000000"
  par(bg = darkcol)
  ani.options(interval = 0.5)
  for (i in 1:10)
  {
    plot(0:10, runif(11, 4, 8), col = "magenta1")
    ani.pause()
  }
}, video.name = "TestVideo.mp4",
ani.res = 144, ani.height = 900, ani.width = 1600)


  


  This one doesn't work :

  


  library(animation)
saveVideo({
  pdf(ani.options("img.fmt"))
  darkcol = "#000000"
  par(bg = darkcol)
  ani.options(interval = 0.5)
  for (i in 1:10)
  {
    plot(0:10, runif(11, 4, 8), col = "magenta1")
    ani.pause()
  }
}, video.name = "TestVideoPDF.mp4",
ani.res = 144, ani.height = 9, ani.width = 16,
use.dev = FALSE, ani.type = "pdf")


  


  Here is what the console displays when I run the second batch of code :

  


  Executing: "ffmpeg" -y -framerate 2 -i Rplot.pdf -pix_fmt yuv420p TestVideoPDF.mp4
ffmpeg version 2023-04-06-git-b564ad8eac-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
libavutil      58.  6.100 / 58.  6.100
libavcodec     60.  9.100 / 60.  9.100
libavformat    60.  4.101 / 60.  4.101
libavdevice    60.  2.100 / 60.  2.100
libavfilter     9.  5.100 /  9.  5.100
libswscale      7.  2.100 /  7.  2.100
libswresample   4. 11.100 /  4. 11.100
libpostproc    57.  2.100 / 57.  2.100
Rplot.pdf: Invalid data found when processing input


  


  I'm on a Windows PC running Windows 10 Enterprise. Any help would be greatly appreciated !