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• for loop from two values in list of dicts with python and ffmpeg

  30 décembre 2019, par Brendon Rathbone

  I’m having an issue figuring out how to do the last for loop in my first really useful python program. I am trying to split a video with ffmpeg based on a bunch of logic to figure out edit points.

  I have a list of dictionaries ’cut_list’ that I have sorting figured out like this

  [{'Cutstart': '01:00:00:00', 'CutEnd': '01:00:05:00'}, {'Cutstart': '01:00:10:01', 'CutEnd': '01:00:15:00'}, {'Cutstart': '01:00:20:01', 'CutEnd': '01:00:25:01'}]

  I then am trying to feed these values to ffmpeg, iterating over the list of dicts like so :

  cutcounter=1
  
  for Cutstart & CutEnd in cut_list:
  
      for k in Cutstart.items() & v in CutEnd.items() :
  
          print(k)
  
          print(v)
  
          intime=Timecode(fps_real, k)
  
          intime.set_fractional(True)
  
          outtime=Timecode(fps_real, v)
  
          outtime.set_fractional(True)
  
          cutfile=str(cutcounter)+".mxf"
  
          print(k)
  
          print(v)
  
          subprocess.call(['ffmpeg', '-i', "C:\\path\\to\\file\\BaseFile.mxf", '-ss', k, '-to', v, '-c:v', 'copy', '-c:a', 'copy', cutfile])
  
          cutcounter=cutcounter+1

  My expected output is to iterate over the list and have chunks of the video split off at those specific timecodes and numbered 1.mxf and count up for every for loop to be recombined with inserted fixes to those timespans. I think after I figure out the for loop I will need to also feed the timecode values as HH:mm:ss:mss instead of HH:mm:ss:ff but that’s not the part that I’m having trouble figuring out yet. Right now I just can’t grok the logic of getting the cutstart and cutend for each timecode to feed into the ffmpeg script.

  Current error as I bash my head against the wall trying to get smarter is : Syntax Error: cannot assign to operator

  I’m definitely inexperienced and have hacked this together from a lot of other helpful posts, but am struggling with sorting and lists vs list of dicts vs tuples etc. and where and when to use each one.

• FFMPEG Combine a list of jpg with mo3 audios to sepatated videos on batch [closed]

  20 septembre 2020, par Francisco Barrod

  i have a big list of jpg and mp3 files. each of them have identical names but they not enumerated. example cat.jpg and cat.mp3 pig.jpg and pig.jpg i want to make videos cat.mp4 pig.mp4

  


  i have a code to do this manually but i want to make it on batch. heres my code

  


  ffmpeg -loop 1 -i cat.jpg -i cat.mp3 -threads 8 -shortest -c:v libx264 -c:a copy cat.mp4  


  


  its simple but works for my need.

  


  need help to make it on batch-

  


  thanks in advance.

  


• Revision 100423 : Éviter une erreur fatale PHP Fatal error : Cannot use empty list in ...

  7 novembre 2016, par kent1@… — Log

  Éviter une erreur fatale
  PHP Fatal error : Cannot use empty list in /Users/kent1/Sites/SPIP/_plugins_/fulltext/trunk/action/fulltext_convert_myisam.php on line 28