Sur d’autres sites (7125)

• OSError : [Errno 13] Permission denied when running python code called extract.py

  26 avril 2017, par aisunshinehui

  ffmpeg.py :

  def resize(videoName, resizedName):
  
      if not os.path.exists(videoName):
  
        print '%s does not exist!' % videoName
  
        return False
  
      # call ffmpeg and grab its stderr output
  
      p = subprocess.Popen([ffmpeg, "-i", videoName],stderr=subprocess.PIPE)
  
      out, err = p.communicate()
  
      # search resolution info
  
      if err.find('differs from') > -1:
  
        return False
  
      reso = re.findall(r'Video.*, ([0-9]+)x([0-9]+)', err)
  
      if len(reso) < 1:
  
         return False
  
      # call ffmpeg again to resize
  
      subprocess.call([ffmpeg, '-i', videoName, '-s', '160 x 120', resizedName])
  
      return check(resizedName)
  
  
  
   # check the video file is corrupted or not
  
   def check(videoName):
  
       if not os.path.exists(videoName):
  
          return False
  
       p = subprocess.Popen([ffmpeg, "-i", videoName], stderr=subprocess.PIPE)
  
       out, err = p.communicate()
  
       if err.find('Invalid') > -1:
  
          return False
  
       return True

  extract.py :

  def extract(videoName, outputBase):
  
      if not os.path.exists(videoName):
  
          print '%s does not exist!' % videoName
  
          return False
  
      if check_dup(outputBase):
  
          print '%s processed' % videoName
  
          return True
  
      resizedName = os.path.join(tmpDir, os.path.basename(videoName))
  
      if not ffmpeg.resize(videoName, resizedName):
  
          resizedName = videoName     # resize failed, just use the input video
  
      subprocess.call('%s %s | %s %s %s %s' % (dtBin, resizedName, fvBin, pcaList, codeBookList, outputBase), shell=True)
  
      return True
  
  
  
  def check_dup(outputBase):
  
      """
  
      Check if fv of all modalities have been extracted
  
      """
  
      featTypes = ['traj', 'hog', 'hof', 'mbhx', 'mbhy']
  
      featDims = [20, 48, 54, 48, 48]
  
      for i in range(len(featTypes)):
  
          featName = '%s.%s.fv.txt' % (outputBase, featTypes[i])
  
          if not os.path.isfile(featName) or not os.path.getsize(featName) > 0:
  
              return False
  
          # check if the length of feature can be fully divided by featDims
  
          f = open(featName)
  
          featLen = len(f.readline().rstrip().split())
  
          f.close()
  
          if featLen % (featDims[i] * 512) > 0:
  
              return False
  
      return True

  i run the extract.py in the terminal and error occurred as follows,then add sudo and run chmod 777 -R /usr/lib/python2.7 to change the permission but it doesn`t work !

  aisunshinehui@aisunshinehui : /program/dtfv/script$ sudo python extract_fv.py /home/aisunshinehui/program/dtfv/script/videolist/video.txt

  /home/aisunshinehui/program/dtfv/script/output/ 1
  
  [sudo] password for aisunshinehui: 
  
      0 /home/aisunshinehui/program/dtfv/script/videolist
  
    Traceback (most recent call last):
  
        File "extract_fv.py", line 63, in <module>
  
          extract(videos[i], outputName)
  
        File "extract_fv.py", line 27, in extract
  
          if not ffmpeg.resize(videoName, resizedName):
  
        File "/home/aisunshinehui/program/dtfv/script/ffmpeg.py", line 17, in resize
  
          p = subprocess.Popen([ffmpeg, "-i", videoName], stderr=subprocess.PIPE)
  
        File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
  
          errread, errwrite)
  
        File "/usr/lib/python2.7/subprocess.py", line 1327, in _execute_child
  
          raise child_exception
  
      OSError: [Errno 13] Permission denied
  
  </module>

  help me !

• ffmpeg permission denied though the user has permission

  12 octobre 2014, par codename_subho

  I have installed ffmpeg in my server running ubuntu 14. my flask app project root is at /var/www/project/
  i am able to upload files and my python scripts are able to write new files, but when i run ffmpeg in my script it gives permission denied.
  Also running the below line in terminal

  ffmpeg -i path/to/inputfile /path/to/outputfile & ps aux | grep ffmpeg 
  
  
  
  gives the user running the process is "ubuntu" which has write access to the project folder and its subfolders. As i told you other python script run by user "ubuntu" is able to create file.

  permission denied error happens in both cases(python script and directly in terminal)

  update :
  also looking at the confusion with the permissions, is there a way i can run the app from /home/ubuntu/project instead of /var/www/project. i am using mod_wsgi with apache for my flask-app.

• OSError : [errno2] no such file or directory and OSError : [Errno 12] Cannot allocate memory

  30 octobre 2018, par elena

  I am trying to convert video with Apache Kafka and FFmpeg. I have run my program on my system, but it fails when it runs on the server. I run code I got this error :

  Traceback (most recent call last):
  
    File "/home/fu/kafka/kafkaVideo/ffmpeg-python-master/ffmpeg/send.py", line 30, in <module>
  
      subprocess.call([sys.executable, start])
  
    File "/usr/lib/python2.7/subprocess.py", line 523, in call
  
      return Popen(*popenargs, **kwargs).wait()
  
    File "/usr/lib/python2.7/subprocess.py", line 711, in __init__
  
      errread, errwrite)
  
    File "/usr/lib/python2.7/subprocess.py", line 1235, in _execute_child
  
      self.pid = os.fork()
  
  OSError: [Errno 12] Cannot allocate memory
  
  frame send
  
  frame send
  
  frame send
  
  frame send
  
  ...
  
  raceback (most recent call last):
  
    File "/home/fu/kafka/kafkaVideo/ffmpeg-python-master/ffmpeg/send.py", line 30, in <module>
  
      subprocess.call([sys.executable, start])
  
    File "/usr/lib/python2.7/subprocess.py", line 523, in call
  
      return Popen(*popenargs, **kwargs).wait()
  
    File "/usr/lib/python2.7/subprocess.py", line 711, in __init__
  
      errread, errwrite)
  
    File "/usr/lib/python2.7/subprocess.py", line 1235, in _execute_child
  
      self.pid = os.fork()
  
  OSError: [Errno 12] Cannot allocate memory
  
  frame send
  
  frame send
  
  ...
  
  Traceback (most recent call last):
  
    File "send.py", line 107, in <module>
  
      publish_video(video_path)
  
    File "send.py", line 48, in publish_video
  
      subprocess.call([sys.executable, start])
  
    File "/usr/lib/python2.7/subprocess.py", line 523, in call
  
      return Popen(*popenargs, **kwargs).wait()
  
    File "/usr/lib/python2.7/subprocess.py", line 1392, in wait
  
      pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
  
    File "/usr/lib/python2.7/subprocess.py", line 476, in _eintr_retry_call
  
      return func(*args)``
  
  OSError: [Errno 2] No such or directory
  
  </module></module></module>

  but The third part of the error is different in different debug