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• problem with "subprocess.Popen" AFTER make .exe file

  1er février 2020, par afcc0060

  im try to convert mp3 to mp4 with ffmpeg (command line)
  everything is well and program runs correctly.
  i have one progressbar and handle it from this function by reading ffmpeg command line output

  cls_wnd.pbar_step(line.lower())

  but after make (single) .exe file with pyinstaller program not run and did not convert anything

          def _cli(self ,cls_wnd ,cmd):
  
              errors = False
  
              cmd_output=""
  
  
  
              line=''
  
              try:
  
                      p = subprocess.Popen(cmd ,stdout=subprocess.PIPE ,
  
                                                stderr=subprocess.STDOUT ,
  
                                                universal_newlines=True ,
  
                                                shell=False ,
  
                                                creationflags = subprocess.CREATE_NO_WINDOW)
  
  
  
                      for line in p.stdout:
  
                              if cls_wnd.bt02.cget('text').lower()!="cancel":
  
                                      p.kill()
  
                                      return cmd_output, True ,'cancel'
  
                              cmd_output+=line
  
                              if line.lower().find('duration:')>-1 or line.lower().find('frame=')<1:
  
                                      cls_wnd.pbar_step(line.lower())
  
                              cls_wnd.root.update()
  
  
  
                      stdoutdata, stderrdata = p.communicate()
  
                      if p.wait() != 0:
  
                              p.kill()
  
                              return cmd_output, True ,line
  
                      p.kill()
  
                      return cmd_output, errors ,' '
  
              except OSError as e:
  
                      p.kill()
  
                      return cmd_output,True,' exit from except '
  
              return '',True,'exit from _cli end'

  cmd is somthnig like this

  cmd='ffmpeg -y -loop 1 -i 1.jpg -i 1.mp3 -c:a copy -c:v libx264 -shortest 1.mp4'

  make .exe file with this command

  pyinstaller -w --onefile  mp3tomp4.py --onefile

  if i dont use’-w’ every thing is well .. but that ugly black cmd-windows shown and i can not close or hide it

• Problem to capture a video in 4K with FFmpeg

  16 mars 2020, par Ale7

  I am a new user of FFmpeg. I am trying to capture a ten minutes video in mp4 format, on 4 4K’s slot and 4 FHD’s slot with cards video Pro Capture by Magewell.
  My machine has the following characteristics :

  • OS : Windows Server 2012
  • RAM : 64 GB
  • CPU : 2 processors Intel Xeon E5-2640 v3 @ 2.60 GHz

  The FFmpeg script, for slot 4K (I change resolution for FHD), used is the following :

  ffmpeg -rtbufsize 2048M -re -y -thread_queue_size 20384 -pix_fmt yuv420p -f dshow -video_size 3840x2160 -r 50 -i video="Video (05-0 Pro Capture HDMI 4K+)"  -codec:v libx264  -preset ultrafast -threads 8 -pix_fmt yuv420p -tune fastdecode -bufsize 2048M output.mp4

  This command is the best solution found at the moment, but the CPU goes up to 100% and the buffer fills up quickly and starts to drop the frames.
  So, my question : Is there a way to improve it or is a limit, principally, of the my machine ?
  If it is a machine limit, you would indicate me the minium requirments to do that.

  Thanks in advance to everyone.

• problem with moviepy.video.io.ffmpeg_tools.ffmpeg_movie_from_frames

  7 mars 2023, par fjal

  when i try using this code it gives me this error

  


  from moviepy.video.io.ffmpeg_tools import ffmpeg_movie_from_frames as a
a('file.mp4','New folder',24)


  


  Traceback (most recent call last) :
File "C :\Users\lenovo\Desktop\fr.py", line 2, in 
a('file.mp4','New folder',24)
File "C :\Users\lenovo\AppData\Local\Programs\Python\Python37-32\lib\site-packages\moviepy\video\io\ffmpeg_tools.py", line 20, in ffmpeg_movie_from_frames
"-b", "%dk"%bitrate,
TypeError : %d format : a number is required, not str