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• Révision 20229 : Lorsque r10917 a deplacé la déclaration de bases externes des scripts d’installa...

  2 mars 2013, par esj -

  Quant à la fonction analyse_fichier_connection, lui faire retourner tous les arguments de l’appel de la fonction connexion, pas seulement les 5 premiers : ça permet de savoir quel est le prefixe de table.

• How can I get my saved mp4 to exactly match the output of plot.show() ?

  10 mai 2019, par Jimmy

  When I try to save the results of an animation to mp4 using ffmpeg, I am getting a jumbled mess.

  plt.show() shows exactly what I want it to show in the animation. However, when I save it using ffmpeg, the result is very different from what plt.show() returns. I have tried various arguments for fps etc. but nothing has helped.

  %matplotlib
  
  import pandas as pd
  
  import matplotlib as mpl ## uncomment this if you are running this on a Mac
  
  #mpl.use('TkAgg')         ## and want to use blit=True
  
  import matplotlib.pyplot as plt 
  
  import matplotlib.animation as animation 
  
  import numpy as np 
  
  import csv
  
  
  
  people = ('','Jim', 'Dan')
  
  plt.rcdefaults()
  
  fig, ax = plt.subplots()
  
  y_pos = np.arange(len(people))
  
  
  
  ax.set_xlim(0,10)
  
  ax.set_yticks(y_pos)
  
  ax.set_yticklabels(people)
  
  ax.invert_yaxis() 
  
  ax.set_xlabel('Skill')
  
  titleList=['Basketball','Hockey','Baseball']
  
  df=[[0,5,7],[0,4,9],[0,2,6]]
  
  def animate(i):
  
     # Example data
  
      while i<3:
  
          ax.set_yticks(y_pos)
  
          ax.set_yticklabels(people)
  
          ax.set_xlabel(titleList[i])
  
          performance=df[i]
  
  
  
          title = ax.text(0.5,0.95,str(titleList[i]), bbox={'facecolor':'w', 'alpha':0.5, 'pad':5},transform=ax.transAxes, ha="center")
  
  
  
          rects = ax.barh(y_pos, performance, align='center',
  
                  color='blue', ecolor='None')
  
          return [rect for rect in rects] + [title]
  
  
  
  
  
  ani = animation.FuncAnimation(fig,animate, frames=3, blit=True
  
                              ,interval=2000,repeat=False)
  
  
  
  plt.rcParams['animation.ffmpeg_path'] = 'C:\\ffmpeg\\bin\\ffmpeg.exe'
  
  Writer = animation.writers['ffmpeg']
  
  ani.save('test.mp4')
  
  plt.show() 

  The result is a very fast video where all the data gets written over (similar to the plt.show() results when blit=False).

• lavc : replace internal use of AV_CODEC_CAP_AUTO_THREADS with an internal cap

  9 mars 2021, par Anton Khirnov

  lavc : replace internal use of AV_CODEC_CAP_AUTO_THREADS with an internal cap
  AV_CODEC_CAP_AUTO_THREADS was originally added in b4d44a45f9a to mark
  
  codecs that spawn threads internally and are able to select an optimal
  
  threads count by themselves (all such codecs are wrappers around
  
  external libraries). It is used by lavc generic code to check whether it
  
  should handle thread_count=0 itself or pass the zero directly to the
  
  codec implementation. Within this meaning, it is clearly supposed to be
  
  an internal cap rather than a public one, since from the viewpoint of a
  
  libavcodec user, lavc ALWAYS handles thread_count=0. Whether it happens
  
  in the generic code or within the codec internals is not a meaningful
  
  difference for the caller.
  External aspects of this flag will be dealt with in the following
  
  commit.
  

  • [DH] libavcodec/internal.h
  • [DH] libavcodec/libaomdec.c
  • [DH] libavcodec/libaomenc.c
  • [DH] libavcodec/libdav1d.c
  • [DH] libavcodec/libdavs2.c
  • [DH] libavcodec/libkvazaar.c
  • [DH] libavcodec/libopenh264enc.c
  • [DH] libavcodec/librav1e.c
  • [DH] libavcodec/libsvtav1.c
  • [DH] libavcodec/libuavs3d.c
  • [DH] libavcodec/libvpxdec.c
  • [DH] libavcodec/libvpxenc.c
  • [DH] libavcodec/libx264.c
  • [DH] libavcodec/libx265.c
  • [DH] libavcodec/libxavs.c
  • [DH] libavcodec/libxavs2.c
  • [DH] libavcodec/pthread.c
  • [DH] libavcodec/utils.c