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• Python get Audio/Video frames separately from video file

  3 juillet 2016, par AlvaroAV

  What i’m trying to do :

  Hi !

  I’m trying to store the Video and Audio information from a video file. I would like to store video frames and audio frames separately in different variables.

  My intention is to manage video/files and do some actions with the audio and video frame list, but to do what I’m plannign to do I need to store this audio/video frames separately. I’ve read a lot of questions in StackOverflow about python and audio/video managing.

  Most people recommend to use OpenCV or ffmpeg to manage videos. I saw some scripts using these libraries to get video(only video) frames, but none of them are getting audio, most of them are just getting video frames and save them as RGB images. I also check some scripts where people get audio frames from a mp3 file, but I’m not sure if you can do that in a video file

  Most important thing to me is to know the best way to manage video and audio separately. I’m not looking for people to do my code, just asking to point me in a good direction.

  One of the things I’m trying to do is to send this information via socket, but as I said I need the audio and video frames to be in separated variables (yes, i’m wondering about an stream app, but that’s not the only thing I’m trying to do)

  I know I should give more information, and maybe show some code, but I don’t have any concret code I tried some things, but I’ve never been capable to separate audio and video. I know that each format has his own encryption, and at the end I decided to use "mp4" as video format but I don’t know neither if this is the best format for what I’m trying to do.

  Resume :

  Is openCV the best way to manage video and audio separately ?

  Wich is the easiest way to separate video and audio frames ? Is it possible ?

  Wich is the best documentation I should read to learn about video/audio management ?

  I would like to do the things with my own code, and use in the less way possible openCV or other libraries.

  My "basic" idea is to get a "list" of audio and video frames, and then I would like to do some operations, but right now I can’t find the best way for me to manage a vide using python. I even wonder if could be possible to manage a video as raw data

  I need to know wich is the best library to manage videos using python, for me the best library, will be the one that allows me to manage the videos more "freely"

  I’ve already checked :

  I’ve read too many questions on this theme, the most recent are :

  How to extract audio from video file

  Split audio video separately from given video using MLT

  Embed audio video in python gui

• Unable to load FFProbe on localhost

  21 février 2017, par A.B.Developer

  I know that there are similar questions But I see all and other topics on the web but I could not solve my problem.

  In a Laravel App I want to use ffmpeg extension to create thumbnails images and do other actions on videos.

  I followed all instructions described here (how-to-install-ffmpeg-on-windows).I added ffmpeg to my PATH.

  All things worked fine via command line and windows recognized both ffmpeg and ffprobe but when I want to use FFmpeg on my codes I got Unable to load FFProbe error.

  I locate ffmpeg downloaded folder at C:\ffmpeg.

  I call FFMpeg like this in my controller :

  $ffmpeg = \FFMpeg\FFMpeg::create([
  
      'ffmpeg.binaries' => 'C:/ffmpeg/bin/ffmpeg.exe',
  
      'fprobe.binaries' => 'C:/ffmpeg/bin/ffprobe.exe',
  
  ]);

  As you can While I added ffmpeg to PATH and then specify location of both ffmpeg.exe and ffprobe.exe on calling create method but when run code I got that error.

  I’m using laravel 5.3 and windows 8.

  UPDATE :

  I try :

  dd(getenv('PATH'));

  While I added ffmpeg to PATH but it returns a string that is not contain ffmpeg directory.

  Solution :

  I found that after change PATH must to restart wamp. now all things work fine.

• Export frames/images from compressed video

  24 mars 2015, par Jan Viehweger

  I have a compressed movie (mp4) and I want to extract every single frame / image from it. I know that each individual frame of the video only contains the changed pixels regarding to the last keyframe, because of the video compression. But that is exactly what I want. I just want to see those differences. I want to visualy see how the compressor works.

  Is there some tool like imagemagick out there what can things like that ?