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• Cannot run ffmpeg in subproces.call

  27 juin 2012, par Richard Knop

  So, I have a simple class where I am trying to save a string response from a terminal ffmpeg command into an object property :

  import os
  
  import subprocess
  
  
  
  class Movie(object):
  
  
  
      absolute_path = None
  
      movie_info = None
  
  
  
      def __init__(self, path):
  
          self.absolute_path = "%s/%s" % (os.getcwd(), path)
  
          if(os.path.exists(self.absolute_path) is False):
  
              raise IOError("File does not exist")
  
  
  
      def get_movie_info(self):
  
          ffmpeg_command = "ffmpeg -i %s" % self.absolute_path
  
          self.movie_info = subprocess.call(ffmpeg_command)
  
          print self.movie_info

  When I then run this command in cmd :

  import os
  
  import sys
  
  sys.path.append(os.getcwd())
  
  
  
  from Encode.Movie import Movie
  
  
  
  try:
  
      movie = Movie("tests/test_1.mpg")
  
      movie.get_movie_info()
  
  except IOError as e:
  
      print e

  I get this exception :

  richard@richard-desktop:~/projects/hello-python$ python main.py 
  
  Traceback (most recent call last):
  
    File "main.py", line 9, in <module>
  
      movie.get_movie_info()
  
    File "/home/richard/projects/hello-python/Encode/Movie.py", line 16, in get_movie_info
  
      self.movie_info = subprocess.call(ffmpeg_command)
  
    File "/usr/lib/python2.7/subprocess.py", line 493, in call
  
      return Popen(*popenargs, **kwargs).wait()
  
    File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
  
      errread, errwrite)
  
    File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
  
      raise child_exception
  
  OSError: [Errno 2] No such file or directory
  
  </module>

  The path is correct because when I do print self.absolute_path before subprocess.call(), I get :

  /home/richard/projects/hello-python/tests/test_1.mpg

  And this file exists.

• add image to mov using ffmpeg

  23 juin 2012, par knishua

  i have seen this code on this link

  http://www.catswhocode.com/blog/19-ffmpeg-commands-for-all-needs

  " Mix a video with a sound file

  ffmpeg -i son.wav -i video_origine.avi video_finale.mpg "

  is it possible to add a seperate image ( created using ffmpeg and ) to a mov , say

  ffmpeg -threads 8 -i D:\imagesequence\dpx\brn_055.%04d.dpx  D:\imagesequence\dpx\test2.mov

  makes a movie, then is it possible to add an image (D:/imagesequence/dpx/final_with_text_mod_04.jpg) to the beginning of this mov using one ffmpeg command

  ffmpeg -i D:/imagesequence/background.jpg -vf "movie='D\:/imagesequence/dpx/thumbnail.jpg' [watermark]; [in][watermark] overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/3 [out]" D:/imagesequence/dpx/final_with_text_mod_04.jpg

• FFmpeg watermark [windows] [migrated]

  10 juin 2013, par user2472209

  ffmpeg –i test.mkv -vf "movie=watermark.png [watermark]; [in][watermark] overlay=10:10 [out]" outputvideo.mkv

  I'm trying to simply add a watermark to a video to start testing with ffmpeg.

  But it simply doesn't work for someone reason although i can't see any error.

  I also tried

  ffmpeg -i test.mkv -i watermark.png -filter_complex 'overlay=10:main_h-overlay_h-10' output.mkv

  But no succes there either.

  Anyone has an idea as there are no recent tutorials on ffmpeg watermarking it seems.