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• Creating video from list of images using ffmpeg

  13 août 2019, par haseeb

  Summary

  From given code, second function taking UI values and passing to first one. from log, first two lines shows command list and command string.

  What’s irritating me is, if I copied second line from log (dos cmd) and paste it in a cmd prompt, it works successfully and produces video correctly. but running it via gui subprocess, errors out.

  Task Description

  Directory contains thousand of images each after few minutes of a construction project. I need to create a video from data (images) per day basis. I have successfully extracted list of images, etc, and have data.

  utils.py :

  def framesToVideoViaCount(srcFile,outputFile,start,count,rate):
  
      # ffmpeg -start_number 1 -i test_%04d.png -vframes 100 -vcodec mpeg4 test.mp4
  
      # "C:\\Users\\lalat\\Desktop\\03008427633\\output_%04d.png"
  
      # ffmpeg -start_number 50 -i "C:\\Users\\lalat\\Desktop\\03008427633\\output_%04d.png" -vframes 200 -vcodec mpeg4 "C:\\Users\\lalat\\Desktop\\day1.mp4"
  
      command = [ 'ffmpeg',
  
                  # '-loglevel', 'fatal',
  
                  '-r %d' %(rate),
  
                  '-start_number %d' %(start) ,
  
                  '-i "%s"' %(srcFile),
  
                  '-vframes %d' %(count),
  
                  '-vcodec mpeg4' ]
  
      # command.append ('fps=%d' % (fps))
  
      command.append (outputFile)
  
      print ("COMMAND: " , command)
  
      print ("DOS CMD: ", ' '.join(command))
  
      ffmpeg = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE )
  
      out, err = ffmpeg.communicate()
  
      if(err) : print('error',err); return None;
  
      print (out)

  Actual GUI function call in tk gui app :

  def approachByCount(self):
  
      tdate = datetime(year=int(self.fyear.get()), month=int(self.fmonth.get()), day=int(self.fdate.get()))
  
      # now = datetime.datetime.now()
  
      outputName = str(tdate.strftime("%Y%m%d")) + ".txt"
  
      outputVid = str(tdate.strftime("%Y%m%d")) + ".mp4"
  
      files = os.listdir(self.userDir)
  
      selected = []
  
      for afile in files:
  
          afile = os.path.join(self.userDir,afile)
  
          sdate = datetime.fromtimestamp(os.path.getmtime(afile))
  
          if sdate.date() == tdate.date():
  
              selected.append(afile)
  
      # get first file name
  
      srcfilename = os.path.basename(selected[0])
  
      srcfilename,ext = srcfilename.split(".")
  
      filename,pad = srcfilename.split("_")
  
      srcfilename = os.path.join(self.userDir,filename+"_%0"+str(len(pad))+"d."+ext)
  
      start = int(pad)
  
      count = len(selected)
  
      utils.framesToVideoViaCount(srcfilename,outputVid,start,count,25)

  ERROR log

  COMMAND:  ['ffmpeg', '-r 25', '-start_number 1', '-i "C:\\Users\\lalat\\Desktop\\03008427633\\output_%04d.png"', '-vframes 382', '-vcodec mpeg4', '20190810.mp4']
  
  DOC CMD:  ffmpeg -r 25 -start_number 1 -i "C:\Users\lalat\Desktop\03008427633\output_%04d.png" -vframes 382 -vcodec mpeg4 20190810.mp4
  
  
  
  error b"ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers\r\n
  
  built with gcc 8.2.1 (GCC) 20181017\r\n
  
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth\r\n
  
  libavutil      56. 22.100 / 56. 22.100\r\n
  
  libavcodec     58. 35.100 / 58. 35.100\r\n
  
  libavformat    58. 20.100 / 58. 20.100\r\n
  
  libavdevice    58.  5.100 / 58.  5.100\r\n
  
  libavfilter     7. 40.101 /  7. 40.101\r\n
  
  libswscale      5.  3.100 /  5.  3.100\r\n
  
  libswresample   3.  3.100 /  3.  3.100\r\n
  
  libpostproc    55.  3.100 / 55.  3.100\r\n
  
  Unrecognized option 'r 25'.\r\n
  
  Error splitting the argument list: Option not found\r\n"

• Revision 37444 : Si les theora+vorbis plantent sur vorbis quand ils sont en mono, vorbis ...

  20 avril 2010, par kent1@… — Log

  Si les theora+vorbis plantent sur vorbis quand ils sont en mono, vorbis plantera aussi ... on rationalise tout cela

• Revision 33445 : Deplacement de inc-theme-head à la suite de habillage.css et ...

  1er décembre 2009, par shnoulle@… — Log

  Deplacement de inc-theme-head à la suite de habillage.css et impression.css pour surcharge