Avidemux

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======  Batch Processing 2 ======


The first step is to process one file manually and save the corresponding tinypy project.

A typical file would look like this :
  #PY  <- Needed to identify #
  #--automatically built--
  
  adm = Avidemux()
  adm.loadVideo("/work/samples/avi/3mn.avi")
  adm.clearSegments()
  adm.addSegment(0, 0, 109025495)
  adm.markerA = 0
  adm.markerB = 109025495
  adm.videoCodec("x264", "useAdvancedConfiguration=True", "general.params=AQ=20", "general.threads=99",     "general.preset=", "general.tuning=", "general.profile=", "general.fast_decode=False",\
   "general.zero_latency=False", "general.fast_first_pass=True" \
  , "general.blueray_compatibility=False", "general.fake_interlaced=False", "level=-1", \
  ...
  ...
  "ratecontrol.lookahead=40")
  adm.addVideoFilter("swscale", "width=1280", "height=960", "algo=2", "sourceAR=1", "targetAR=1")
  adm.audioClearTracks()
  adm.setSourceTrackLanguage(0,"unknown")
  adm.audioAddTrack(0)
  adm.audioCodec(0, "Faac");
  adm.audioSetDrc(0, 0)
  adm.audioSetShift(0, 0,0)
  adm.setContainer("MP4", "muxerType=0", "useAlternateMp3Tag=True")
  
We'll remove the beginning where we load the file and set the markers to only keep the settings part.
It becomes :
  adm.videoCodec("x264", "useAdvancedConfiguration=True", "general.params=AQ=20", "general.threads=99",     "general.preset=", "general.tuning=", "general.profile=", "general.fast_decode=False",\
   "general.zero_latency=False", "general.fast_first_pass=True" \
  , "general.blueray_compatibility=False", "general.fake_interlaced=False", "level=-1", \
  ...
  ...
  "ratecontrol.lookahead=40")
  adm.addVideoFilter("swscale", "width=1280", "height=960", "algo=2", "sourceAR=1", "targetAR=1")
  adm.audioCodec(0, "Faac");
  adm.setContainer("MP4", "muxerType=0", "useAlternateMp3Tag=True")
  
We'll reinject that part in the convert function we defined in the skeleton.
It is now :  

  #
  # Load all the files in c:\tmp with .mp4 extension.
  # That's it.
  #
  ext="mp4"
  inputFolder="c:\\tmp\\"
  #
  def convert(filein):   
      if(0 == adm.loadVideo(filein)):
          ui.displayError("oops","cannot load "+filein)
          raise
      # manual file insert
      adm.videoCodec("x264", "useAdvancedConfiguration=True", "general.params=AQ=20",\
       "general.threads=99",     "general.preset=", "general.tuning=", "general.profile=",\
       "general.fast_decode=False",\
       "general.zero_latency=False", "general.fast_first_pass=True", \
       "general.blueray_compatibility=False", "general.fake_interlaced=False", "level=-1", \
       ...
       ...
       "ratecontrol.lookahead=40")
      adm.addVideoFilter("swscale", "width=1280", "height=960", "algo=2", "sourceAR=1", "targetAR=1")
      adm.audioCodec(0, "Faac");
      adm.setContainer("MP4", "muxerType=0", "useAlternateMp3Tag=True")
      # manual insert end
      adm.save(filein+".converted.mp4")
      print("Done")
    
  #
  # Main
  #
  ui=Gui()
  adm=Avidemux()
  #
  list=get_folder_content(inputFolder,ext)
  if(list is None):
      raise
  for i in list:
          convert(i)
  print("Done")

A couple of pitfalls :
  * The script is invalid, the x264 configuration line has been truncated. You must put a complete and valid line.
  * Dont forget that a line cannot exceed 200 chars, split it and add "\" at the end of each split line.
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