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• avoiding running of FFmpeg on terminal/cmd

  14 janvier 2021, par Education 4Fun

  I'm using FFmpeg for a small project so I built a GUI basic application for video editing
here is the image


  


  Everything is working fine but I just want to avoid opening the terminal for the FFmpeg process the reason the terminal is opening is because

  


  I used os.system("FFmpeg command here")


  


  so is there a way to import FFmpeg completely and avoid using terminal and run in code
  
if u have any idea please suggest and let me know
  
for gui i used PYQT5 and python to code
  
Thank you

  


  Tried using subprogram but didn't work (worked for normal commands but not for ffmpeg)
I need the output to print also to store in a python variable
Please check the image for more info

  


  

  


• C++ code for ffmpeg terminal command [on hold]

  17 janvier 2018, par KingWealth

  Platform - Linux
  I created a v4l2loopback device by following the guide.
  The following terminal command is used to write the video testsrc.avi into the loopback device /dev/video1
  

  ffmpeg -re -i testsrc.avi -f v4l2 /dev/video1 

  Now the question is, I want the c++ code for the above mentioned to terminal comment.

  Note - c++ code for -f v4l2 /dev/video1 is enough too.

  The actual program and logic is really long and irrelevant to explain.
  The problem is, i want to write ffmpeg avframes into the loopback device but using fwrite is giving disturbed output.

• Catch refreshing Terminal output in Python

  26 janvier 2019, par Aaroknight

  I have written a python script which converts movies with ffmpeg from anything to h265 (hevc). Works fine so far now and I get catch a terminal output (How can I get terminal output in python ? - Stackoverflow). I already tried this solution as well : Catching Terminal Output in Python - Stackoverflow But none of them is really what I need.

  Current code is following :

  def convert(path):
  
  if os.path.getsize(path) < 500000000:
  
      pass
  
  name = path.split("/")[-1]
  
  os.mkdir(path.replace(name, "hevc/"))
  
  outvid = path.replace(name, "hevc/" + name)
  
  cmd = ["ffmpeg", "-hwaccel", "cuvid", "-i", path, "-c:v", "hevc_nvenc", "-preset",
  
         "slow", "-rc", "vbr_hq", "-max_muxing_queue_size", "1000", "-map", "0", "-map_metadata",
  
         "0", "-map_chapters", "0", "-c:a", "copy", "-c:s", "copy", outvid]
  
  
  
  process = subprocess.Popen(cmd, stdout=subprocess.PIPE).communicate()[0]
  
  print(process)

  While ffmpeg is converting something, the bottom terminal line usually actualizes itself every second showing fps, time, etc. See screenshot bottom line.

  

  In Python I just get a static output :

  

  So do you guys have any idea how to catch that refreshing output ?