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• RuntimeError : No MovieWriters available in Matplotlib animation

  24 mai 2020, par user8715977

  The problem I am getting is in code similar to this example : 
https://matplotlib.org/examples/animation/basic_example_writer.html

  



  The error :

  



  RuntimeError : No MovieWriters available occurs at Writer = animation.writers['ffmpeg'] in the example above.

  



  I am using mac, I have installed ffmpeg using brew, and even installed it with conda even though I am not using anaconda for this particular code.

  



  I am positive that it is installed - I have used it in terminal to change files but it is not working within the program.

  



  Thanks !

  


• How can I close all the threads and multiprocesses in a Tkinter app when the app closes ?

  3 septembre 2021, par kup

  I am creating a Tkinter application which starts a multiprocess.process (daeman = True) and then that process further starts a couple of threads and that thread further starts an FFmpeg process.

  


  for i, val in enumerate(group):
    threads.append(Thread(target = self.ffmpeg, args=(val, )))
    threads[i].start()


  


  But when I close the application the process does not stop. I can still see the log in the terminal after I close the application.

  


  I just want them to close when application shuts down.

  


  I also tried :

  


  sys.exit()


  


• How do I batch cut videos ? [closed]

  12 février 2024, par EngineerJack

  I've searched for a while on Google, but haven't found a good solution.

  


  I have multiple videos that I want to cut parts from, so I would like to figure out how to batch cut them so I can figure out each video, then cut them all at once.

  


  I assume I'll use the terminal or powershell, and use commands, write down the info for each video in a file (like a script) then call on that file so they process one after another from that script.

  


  I know that I can do this one-by-one with the code below, but I would like to know how to use the following code for multiple videos as I described above.

  


  ffmpeg -i "video.mp4" -ss 00:00:00 -to 00:00:00 -async 1 -strict -2 "cut.mp4"

  


  BUT, a program (preferrably freeware) that isn't a video editor, but one that I can put the "start" and "end" times, then add multiple videos, WOULD be preferred.

  


  Anyone who can help me with this, I'd appreciate it.

  


  I've tried searching for ways to do this using .bat and .ps1 files on Google, but without finding a good solution.