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  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 is the first MediaSPIP stable release.
    Its official release date is June 21, 2013 and is announced here.
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

Sur d’autres sites (7202)

  • Python ImageIO : Too many open files

    24 août 2017, par orbv12

    I am using imageio in python in order to open all video files in a directory and convert them to numpy arrays.

    Here is the script I am using :

      1 from __future__ import print_function
    
  2 from avi_to_numpy import *
    
  3 from os import listdir
    
  4 import numpy as np
    
  5 import imageio 
    
  6       
    
  7 class_path = '../Diving/'
    
  8 max_frames = 16
    
  9 stride = 8
    
 10 videos = [vid for vid in listdir(class_path)]
    
 11 train = []
    
 12 
    
 13 for vid in videos:
    
 14     print(str.format('Loading {}...', vid), end="")
    
 15     filename = class_path + vid
    
 16     reader = imageio.get_reader(filename, 'ffmpeg')
    
 17     frames = []
    
 18     
    
 19     for i, im in enumerate(reader):
    
 20         if len(frames) == max_frames:
    
 21             break
    
 22         
    
 23         if i % stride == 0:
    
 24             frames.append(im)
    
 25     
    
 26     reader.close()
    
 27     train.append(np.array(frames))
    
 28     print('done')        
    
 29 
    
 30 
    
 31 print(len(train))

    Eventually this script crashes with the following error output :

    Traceback (most recent call last):
    
  File "load_class_test.py", line 16, in <module>
    
    reader = imageio.get_reader(filename, 'ffmpeg')
    
  File "/usr/local/lib/python2.7/site-packages/imageio/core/functions.py", line 111, in get_reader
    
    return format.get_reader(request)
    
  File "/usr/local/lib/python2.7/site-packages/imageio/core/format.py", line 158, in get_reader
    
    return self.Reader(self, request)
    
  File "/usr/local/lib/python2.7/site-packages/imageio/core/format.py", line 207, in __init__
    
    self._open(**self.request.kwargs.copy())
    
  File "/usr/local/lib/python2.7/site-packages/imageio/plugins/ffmpeg.py", line 260, in _open
    
    self._initialize()
    
  File "/usr/local/lib/python2.7/site-packages/imageio/plugins/ffmpeg.py", line 326, in _initialize
    
    stdout=sp.PIPE, stderr=sp.PIPE)
    
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
    
    errread, errwrite)
    
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1223, in _execute_child
    
    errpipe_read, errpipe_write = self.pipe_cloexec()
    
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1175, in pipe_cloexec
    
    r, w = os.pipe()
    
OSError: [Errno 24] Too many open files
    
</module>

    I am closing the Reader object from imageio. It seems as if the files opened by ffmpeg are not being closed properly.

    Is there an obvious step I am missing here ? Am I closing the files properly ?

    EDIT : Found temporary solution. Opened a new issue on github.

    I was able to resolve the issue by uncommenting the following lines of code from ’imageio/plugins/ffmpeg.py’ :

    381         def _close_streams(self):
    
382             for std in (self._proc.stdin,
    
383                         self._proc.stdout,
    
384                         self._proc.stderr):
    
385                 try:
    
386                     std.close()
    
387                 except Exception:  # pragma: no cover
    
388                     pass

    I then added a call to the above function in _close(self) :

    271         def _close(self):
    
272             self._terminate(0.05)  # Short timeout
    
273             self._close_streams()
    
274             self._proc = None

    I am not sure what the side effects of doing this are, but it provides a solution for me.

    Here is the link to the issue : https://github.com/imageio/imageio/issues/145

  • Python ImageIO : Too many open files

    23 avril 2016, par orbv12

    I am using imageio in python in order to open all video files in a directory and convert them to numpy arrays.

    Here is the script I am using :

      1 from __future__ import print_function
    
  2 from avi_to_numpy import *
    
  3 from os import listdir
    
  4 import numpy as np
    
  5 import imageio 
    
  6       
    
  7 class_path = '../Diving/'
    
  8 max_frames = 16
    
  9 stride = 8
    
 10 videos = [vid for vid in listdir(class_path)]
    
 11 train = []
    
 12 
    
 13 for vid in videos:
    
 14     print(str.format('Loading {}...', vid), end="")
    
 15     filename = class_path + vid
    
 16     reader = imageio.get_reader(filename, 'ffmpeg')
    
 17     frames = []
    
 18     
    
 19     for i, im in enumerate(reader):
    
 20         if len(frames) == max_frames:
    
 21             break
    
 22         
    
 23         if i % stride == 0:
    
 24             frames.append(im)
    
 25     
    
 26     reader.close()
    
 27     train.append(np.array(frames))
    
 28     print('done')        
    
 29 
    
 30 
    
 31 print(len(train))

    Eventually this script crashes with the following error output :

    Traceback (most recent call last):
    
  File "load_class_test.py", line 16, in <module>
    
    reader = imageio.get_reader(filename, 'ffmpeg')
    
  File "/usr/local/lib/python2.7/site-packages/imageio/core/functions.py", line 111, in get_reader
    
    return format.get_reader(request)
    
  File "/usr/local/lib/python2.7/site-packages/imageio/core/format.py", line 158, in get_reader
    
    return self.Reader(self, request)
    
  File "/usr/local/lib/python2.7/site-packages/imageio/core/format.py", line 207, in __init__
    
    self._open(**self.request.kwargs.copy())
    
  File "/usr/local/lib/python2.7/site-packages/imageio/plugins/ffmpeg.py", line 260, in _open
    
    self._initialize()
    
  File "/usr/local/lib/python2.7/site-packages/imageio/plugins/ffmpeg.py", line 326, in _initialize
    
    stdout=sp.PIPE, stderr=sp.PIPE)
    
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
    
    errread, errwrite)
    
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1223, in _execute_child
    
    errpipe_read, errpipe_write = self.pipe_cloexec()
    
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1175, in pipe_cloexec
    
    r, w = os.pipe()
    
OSError: [Errno 24] Too many open files
    
</module>

    I am closing the Reader object from imageio. It seems as if the files opened by ffmpeg are not being closed properly.

    Is there an obvious step I am missing here ? Am I closing the files properly ?

    EDIT : Found temporary solution. Opened a new issue on github.

    I was able to resolve the issue by uncommenting the following lines of code from ’imageio/plugins/ffmpeg.py’ :

    381         def _close_streams(self):
    
382             for std in (self._proc.stdin,
    
383                         self._proc.stdout,
    
384                         self._proc.stderr):
    
385                 try:
    
386                     std.close()
    
387                 except Exception:  # pragma: no cover
    
388                     pass

    I then added a call to the above function in _close(self) :

    271         def _close(self):
    
272             self._terminate(0.05)  # Short timeout
    
273             self._close_streams()
    
274             self._proc = None

    I am not sure what the side effects of doing this are, but it provides a solution for me.

    Here is the link to the issue : https://github.com/imageio/imageio/issues/145

  • How to convert an mkv (with subtitles) to something Nexus One friendly ?

    21 décembre 2011, par Daniel Quinn

    I have this ffmpeg one-liner that's been good for generating video files for my Nexus One :

    ffmpeg -i infile.mkv -acodec aac -s 572x238 -vcodec libx264 -vpre ipod640 -ab 128k -b 512k -f mp4 -strict experimental outfile.mp4

    But it does this ignorant of the subtitles in infile.mkv — usually not a problem, unless I'm dealing with a non-english movie. In cases like this, I'd like to use the Japanese audio track, and the English subtitles.

    The funny bit is that I can use mplayer to play it using -alang and -slang, but don't know how to use mencoder to make Nexus One friendly videos. I can use ffmpeg to generate Nexus One friendly videos, but can't figure out how to get it to use a specific subtitle track.

    If someone can solve one of these for me, I'll be a happy camper.

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