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• How to espace quotes, double quotes and colon inside double quotes when using FFMpeg

  23 septembre 2020, par DnerD.Dev

  I'm trying to get a text written onto a video. I can get it to work when I do it in a single line but not when I need to quote the drawtext inside the double quotes to write two lines.

  


  ffmpeg.exe -i input.ts -vf "[in]drawtext=fontfile=Bebas-Regular.ttf:text='"Day: Sunday"':fontcolor=white:y=(h-h*0.2):x=(w-w*0.95):fontsize=36, drawtext=fontfile=Bebas-Regular.ttf:text='"thing1, thing2, thing3"':fontcolor=white:y=(h-h*0.1):x=(w-w*0.95):fontsize=36[out]" -codec:a copy output1.mp4

  


  I've tried so many combinations of \ but I can't get it to work. The error I get is the following :

  


  Unable to find a suitable output format for 'Sunday':fontcolor=white:y=(h-h*0.2):x=(w-w*0.95):fontsize=36, drawtext=fontfile=Bebas-Regular.ttf:text='thing1,'
Sunday':fontcolor=white:y=(h-h*0.2):x=(w-w*0.95):fontsize=36, drawtext=fontfile=Bebas-Regular.ttf:text='thing1,: Invalid argument


  


  I need the video to have this :

  


  Day: Sunday
Thing1, Thing2, Thing3


  


• ffmpeg with a python wrapper— need help avoiding multiple passes on a file

  19 octobre 2018, par Dean D D

  I would like some help refactoring this code to reduce the amount of passes ffmpeg must make on the file. I figure creating a single compounded ffmpeg command would do the trick, but I am kind of lost.

  def processVideo(videoFile, venueWatermarkFile, companyWatermarkFile, mp3File=None, m4vFile=None, cropH, cropW, resizeH, resizeW):
  
      if mp3File != "" :
  
          subprocess.call('ffmpeg -y -i ' + videoFile + ' -i ' + audio + ' -filter_complex "[0:v]scale=480:ih*480/iw, crop=480:480, loop=loop=3:size=210, trim=duration=15[video]" -shortest -map "[video]" -map "1:a?" -c:a aac new1.mp4', shell=True)
  
      else :
  
          subprocess.call('ffmpeg -y -i ' + videoFile + ' -i ' + audio + ' -vf "scale=480:ih*480/iw, crop=480:480" new1.mp4', shell=True)
  
  
  
      if m4vFile != "":   
  
          subprocess.call('ffmpeg -i ' + videoFile + ' -i ' + m4v + ' -filter_complex " [0:v] scale=480:ih*480/iw, crop=480:480 [bg]; [1:v] chromakey=00FF00:similarity=0.2:blend=0.3 [fg]; [bg][fg] overlay=shortest=1 [v] " -map "[v]" -map "0:a?" -f mp4 new1.mp4', shell=True)
  
  
  
      subprocess.call('ffmpeg -y -i new1.mp4 -i ' + venueWatermarkFile + ' -filter_complex "overlay=0:0" -codec:a copy new2.mp4', shell=True)
  
      subprocess.call('ffmpeg -y -i new2.mp4 -i ' + companyWatermarkFile + ' -filter_complex "overlay=0:0" -codec:a copy new.mp4', shell=True)
  
  
  
      subprocess.call('ffmpeg -y -i new.mp4 new.gif -hide_banner', shell=True)
  
      subprocess.call('ffmpeg -y -i new.mp4 -ss 00:00:00.000 -vframes 1 new.jpg', shell=True)
  
  
  
      os.remove("new1.mp4")
  
      os.remove("new2.mp4")
  
  
  
  
  
  processVideo("video-standard.mp4", "venue-standard.png", "company-standard.png", "clip.mp3", "animation.m4v")

• Revision d9655e42b8 : Change in rddiv parameter to make it a power of 2 Converts the constant rddiv p

  11 octobre 2013, par Deb Mukherjee

  Changed Paths :
   Modify /vp9/encoder/vp9_rdopt.c

  
   Modify /vp9/encoder/vp9_rdopt.h

  
  
  Change in rddiv parameter to make it a power of 2

  Converts the constant rddiv parameter to 128 (from 100) and
  implements RDCOST with bit-shift rather than multiplication.
  Other parameters are also adjusted to roughly keep the same
  balance between Rate and Distortion.

  There is a slight speed-up of about 0.5-1% (at speed 0) as
  testted on football_cif.

  There is a slight change in performance due to small change
  in the parameters.
  derfraw300 : +0.033%
  stdhdraw250 ; +0.102%

  Change-Id : I70ac69f58fa71c83108f68fe41796cd19d1fc760