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• How can I extract the metadata and bitrate info from a audio/video file in python

  4 janvier 2015, par Fight Fire With Fire

  What I would like to do is get the metadata from audio or video files and save it to a database record, so far the only way to do this seems to save AVCONV/FFMPEG to a file using a subprocess.Open call then read that file, is there any libraries that can do this to save some steps ? I couldn’t find a way to do it with Pydub or PySox. Here is my simplistic hamfisted beginner code I used that does work and puts the bitrate, duration, etc info into a variable audio_info and the metadata into metadata. OGG output worked differently than the other formats i tested (which was a ton of video and audio !).

      try:
  
              p = subprocess.Popen(["avconv" , "-i" , music_file], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  
              out, err = p.communicate()
  
              retcode = p.wait()
  
      except IOError,e:
  
              pass
  
      extension = uploaded_music_file[-3:]
  
      if "ogg" not in [err , extension]:
  
              if "Metadata:" in err:
  
                      list = err.split("Metadata:")
  
                      holder = list[1].split("Duration:")
  
                      metadata = holder[0]
  
                      audio_info = holder[1].replace("At least one output file must be specified","")
  
                      print metadata
  
                      print audio_info
  
              else:
  
                      list = err.split("Duration:")
  
                      audio_info = list[1].replace("At least one output file must be specified","")
  
                      print "No Metadata"
  
                      print audio_info
  
      else:
  
              list = err.split("Duration:")
  
              if "Metadata:" in list[1]:
  
                      data = list[1].split("Metadata:")
  
                      metadata = data[1].replace("At least one output file must be specified","")
  
                      audio_info = data[0]
  
                      print metadata
  
                      print audio_info
  
              else:
  
                      audio_info = list[1].replace("At least one output file must be specified","")
  
                      print "No Metadata"
  
                      print audio_info
  
  if (audio_info):
  
              print "AUDIO INFO:"
  
              cursor.execute("UPDATE songDB SET audio_info = %s WHERE id = %s" ,[ audio_info , song_id ] )
  
              if (metadata):
  
                      print "METADATA:"
  
                      cursor.execute("songDB pack_song SET metadata = %s WHERE id = %s" ,[ metadata , song_id ] )

• How do i convert (pulled from device) individual frames to a video file on linux and push it back to the same directory

  31 mars 2012, par RiASh

  First of all i have frames on my SD Card and frames are there in separate folders for each video..

  what i want to do is that i just want to make REALLY simple Java application for user(just a button to make video files) on the linux OS whose ActionEvent Handler pulls in all the individual frames and converts it to a video..deletes all the frames from the SD Card and then pushes the video file back to the same directory of SD Card..

  i wanted to know how do i pack frames into a video file on Linux(Ubuntu)..i think there is something ffmpeg but i dont know much..
  Can someone provide a example..please .. the images are named as image0000 to image9999

  and is it possible to create video file from those frames AND EVEN having sound in them using ffmpeg..?

  Can adb pull and push files without SD Card being connected..

  And finally wanted to know how do i run shell commands like adb pull, push, ffmpeg from JAVA..

  THERE ARE i think 4 QUESTIONS here but all related so i thought better ask them together..Thanks in advance ! :)

• Anomalie #3452 : L’image jointe à un message de forum n’est pas prise en charge (bug SPIP 3.0.19, ...

  8 juin 2015, par Franck Dalot

  Le problème semble être là http://zone.spip.org/trac/spip-zone/browser/_core_/plugins/forum/forum_autoriser.php par contre, je trouve pas la solution