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• Save movie about open AI gym

  30 novembre 2019, par Andres

  I make a Reinforcement learning code on python with open AI gym.After training I want save the movie about reinforcement learning but on windows this is impossible.

  There is another way to save the movie of reinforcement learning MountainCar-v0 on windows ??

  if __name__ == "__main__":
  
      environment = gym.make("MountainCar-v0")
  
      agent = QLearner(environment)
  
      learned_policy = train(agent, environment)
  
      monitor_path = "./movie_output"
  
      environment = gym.wrappers.Monitor(environment, monitor_path, force=True)

  this is the error message

  DependencyNotInstalled : Found neither the ffmpeg nor avconv executables. On OS X, you can install ffmpeg via brew install ffmpeg. On most Ubuntu variants, sudo apt-get install ffmpeg should do it. On Ubuntu 14.04, however, you’ll need to install avconv with sudo apt-get install libav-tools.

• How can I convert multiple images to a video file while keeping the same file name ? [duplicate]

  13 juillet 2015, par Ertzi

  This question already has an answer here :

  • execute ffmpeg command in a loop
    
    2 answers
    

  My intention would be to get at the same time, picture1.jpg, picture2.jpg, picture3.jpg to video format such as picture1.mp4, picture2.mp4, picture3.mp4.

  I am currently using Mencoder and Linux bash code mencoder mf: //*.jpg -mf w = 1366: h = 768: fps = 6/60: type = jpg -ovc copy -oac copy -o images.mp4. But this command makes all the images into one video file (images.mp4).

  Can I do it with mencoder or ffmpeg ?
  My linux bash coding skills are basic.

• How to "mimic" -c copy when using filters with ffmpeg ? Is there a built-in feature or I'll need some scripting ? [closed]

  29 décembre 2023, par Fabio Freitas

  I'm aware that any stream ffmpeg processes is decoded before applying any desired changes and then re-encoded, which means the stream in question can't simply be copied with -c copy.

  


  Still, I'm not yet very knowledgeable on dealing with media files. Currently, the single issue I'm addressing is cropping black bars from the sides when 4:3 is encoded as 16:9.

  


  That's fairly simple, and I quickly managed to get it going.

  


  Then I noticed some weird stuff via mediainfo and the explorer's side panel. Stream sizes, bitrates and some other details were different than expected.

  


  ---

  


  That's where -c copy comes in. Over the years, every time I tried to solve this, answers would stop at "-c copy can't be used if the stream will be decoded", which is good enough to stop noobs like me from wasting time.

  


  But since I don't know how to use advanced encoding settings, the -c copy I'm looking for is actually how can I re-encode my processed stream using the same (or most similar) settings used before I decoded it.

  


  Is there such an option in ffmpeg ? Are these settings I'm looking for even obtainable by any means ? And if "no" and "yes", could I use ffprobe to write a script for ffmpeg ?

  


  BTW, I'm on Windows 11, but I have Git's SCM tools available.