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• Error when run ffmpeg [on hold]

  24 août 2013, par Thelinh Truong

  I installed ffmpeg on ubuntu 10.04 by use this command :

  sudo apt-get install ffmpeg

  But, when I start ffmpeg, I keep getting this error :

  libavformat.so.52: cannot open shared object file: No such file or directory

  Please help me to fix it.

• ffmpeg PNG - MP4 - Error opening input files : invalid argument

  15 mai 2013, par Max Savage Kramer

  I am following along with this
  visualization project
  converting PNG files in an MP4.

  The only change from the code on the example is that my time stamp starts with
  1.

  ffmpeg -r 20 -b 20M -i example%01d.png output.mp4
  

  And this is what returns

  ffmpeg version N-53055-g7b43120 Copyright (c) 2000-2013 the FFmpeg developers
  built on May 14 2013 20:43:53 with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
  configuration : —disable-yasm
  libavutil      52. 31.100 / 52. 31.100
  libavcodec     55.  9.100 / 55.  9.100
  libavformat    55.  7.100 / 55.  7.100
  libavdevice    55.  0.100 / 55.  0.100
  libavfilter     3. 67.100 /  3. 67.100
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  **Option b (video bitrate (please use -b:v)) cannot be applied to input file
  example%01d.png — you are trying to apply an input option to an output file or
  vice versa. Move this option before the file it belongs to.
  Error parsing options for input file example%01d.png.
  Error opening input files : Invalid argument**
  

• Traceback error with Python when using ffmpeg to convert a video

  16 mai 2013, par TheMickeyNick

  The simple way my script runs is the user provides a folder location and a filetype and glob.glob() finds the files with the filetype provided and adds them to a list. It then uses a for loop and goes through the list and converts each video. But it doesn't like when I try to run my ffmpeg command. Any help would be awesome. I'm also using Win 7 64 bit with 64 bit ffmpeg and Python 3.3
  Here's the error :

  OS Error
  
  Traceback (most recent call last):
  
    File "C:\Python33\lib\subprocess.py", line 1106, in _execute_child
  
      startupinfo)
  
  FileNotFoundError: [WinError 2] The system cannot find the file specified
  
  
  
  During handling of the above exception, another exception occurred:
  
  
  
  Traceback (most recent call last):
  
    File "C:\Users\user\Workspace\PythonConverter\HTMLandPythonConverter\Converter.py", line 77, in <module>
  
      massConvert(fileNames)
  
    File "C:\Users\user\Workspace\PythonConverter\HTMLandPythonConverter\Converter.py", line 47, in massConvert
  
      convertVideotoNewFormat(&#39;.mp4&#39;, x)
  
    File "C:\Users\user\Workspace\PythonConverter\HTMLandPythonConverter\Converter.py", line 61, in convertVideotoNewFormat
  
      myFile = subprocess.Popen(ffmpegString)#, stdout=subprocess.PIPE, stderr=subprocess.PIPE
  
    File "C:\Python33\lib\subprocess.py", line 820, in __init__
  
      restore_signals, start_new_session)
  
    File "C:\Python33\lib\subprocess.py", line 1112, in _execute_child
  
      raise WindowsError(*e.args)
  
  FileNotFoundError: [WinError 2] The system cannot find the file specified
  
  </module>

  Here is my code :

  import subprocess
  
  from subprocess import call
  
  import glob
  
  
  
  fileNames = []
  
  fileLocation = {}
  
  filetype = {}
  
  def convertString(location):
  
      s = list(location)
  
      for i in range(len(s)):
  
          if s[i] in '\\':
  
              s[i] = '/'
  
  
  
      if s[len(s)-1] != '/':
  
          s.append('/')
  
      location = "".join(s)
  
      return location
  
  
  
  def convertStringBack(stringTo):
  
      s = list(stringTo)
  
      for i in range(len(s)):
  
          if s[i] in '/':
  
              s[i] = '\\'
  
      stringTo = "".join(s)
  
      return stringTo
  
  
  
  def fileTypeTester():
  
      FieldType = '*' + input('What\'s the file type we are converting from?')
  
      typeSplit = list(FieldType)
  
      if typeSplit[1] != '.':
  
          typeSplit.insert(1,'.')
  
      FieldType = "".join(typeSplit)
  
      if FieldType not in ['*.flv','*.kdb']:
  
          print('Not a valid file type')
  
      else:
  
          return FieldType
  
      return None
  
  
  
  def massConvert(listOfFiles):
  
      print('Starting Conversion')
  
      for x in listOfFiles:
  
          #x = convertStringBack(x)
  
          print('Converting ' + x + ' to .mp4')
  
          convertVideotoNewFormat('.mp4', x)
  
      print('Finished File Conversion')
  
  
  
  
  
  def convertVideotoNewFormat(newFormat, fileLoc):
  
      newFilePath = fileLoc[0:len(fileLoc)-4]
  
      ffmpegString = ["ffmpeg64","-i", fileLoc,"-qscale","0","-ar","22050","-vcodec","libx264",newFilePath,newFormat]
  
      try:
  
          subprocess.check_call(newFilePath)
  
      except OSError:
  
          print('OS Error')
  
      except subprocess.CalledProcessError:
  
          print('Subprocess Error')
  
      myFile = subprocess.Popen(ffmpegString)
  
      print(myFile)
  
  
  
  #This will replace old HTML flv object tag with new video tag, but it is yet to be implemented
  
  def replaceHTML():
  
      pass
  
  
  
  fileLocation = input('What is the path of the files you\'d like to convert?')
  
  fileLocation = convertString(fileLocation)
  
  fileType = fileTypeTester()
  
  fileNames = glob.glob(fileLocation + fileType)
  
  massConvert(fileNames)

  I've looked around and most of the tutorials are in 2.7 the code is 3.3 and I can't find a tutorial to use ffmpeg for 3.3. My ffmpeg is set to 'ffmpeg64' on my PATH.

  Thanks !