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• PHP - How to track video conversion progress - Stop ffmpeg process in PHP web [closed]

  21 mai 2022, par Mursaleen Ahmad

  I am working on a PHP web project where multiple users will be able upload and convert their videos bitrate using ffmpeg. And if users go to watch page before full conversion then "Video is being processed" message should show up.
I am using jQuery with AJAX and a watch link generated to watch online.

  


  1) How can I find the process is still running and show "Video is being processed" message to the users ?

  


  2) How can I stop ffmpeg process ?

  


  3) How can I get conversion percentage (how much video is converted) from file (as multiple users are using the site so can't work on single file named output.txt) ?

  


• SNAP : Simulation and Neuroscience Application Platform

  2 décembre 2014, par Sumit

  Is there any documentation/help manual on how to use SNAP (Simulation and Neuroscience Application Platform)1.

  I wanted to run the Motor Imagery sample scenario with a .avi file for the stimulus instead of the image. How can that be done ?

  The following error is obtained when using the AlphaCalibration scenario which gives code to play an avi file.Any help appreciated

  :movies:ffmpeg(warning): parser not found for codec indeo4, packets or times may be invalid.
  
  :movies:ffmpeg(warning): max_analyze_duration 5000000 reached at 5000000
  
  :movies(error): Could not open /e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi
  
  :audio(error): Cannot open file: /e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi
  
  :audio(error): Could not open audio /e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi
  
  :movies:ffmpeg(warning): parser not found for codec indeo4, packets or times may be invalid.
  
  :movies:ffmpeg(warning): max_analyze_duration 5000000 reached at 5000000
  
  :movies(error): Could not open /e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi
  
  :gobj(error): Texture "/e/BCI_Feb2014/SNAP-master/src/studies/SampleStudy/bird.avi" exists but cannot be read.
  
  Traceback (most recent call last):
  
    File "E:\BCI_Feb2014\SNAP-master\src\framework\latentmodule.py", line 458, in _run_wrap
  
      self.run()
  
    File "modules\BCI\AlphaCalibration.py", line 30, in run
  
  Exception during run():
  
      m = self.movie(self.moviefile, block=False, scale=[0.7,0.4],aspect=1.125,contentoffset=[0,0],volume=0.3,timeoffset=self.begintime+t*self.awake_duration,looping=True)
  
  Could not load texture: bird.avi
  
    File "E:\BCI_Feb2014\SNAP-master\src\framework\basicstimuli.py", line 348, in movie
  
      tex = self._engine.base.loader.loadTexture(filename)
  
    File "E:\BCI_Feb2014\Panda3D-1.8.0\direct\showbase\Loader.py", line 554, in loadTexture
  
      raise IOError, message
  
  IOError: Could not load texture: bird.avi

• downloading and concatenating parts of videos from youtube

  17 octobre 2018, par amit

  I’m trying to create a video quiz, that will contain small parts of other videos, concatenated together (with the purpose, that people will identify from where these short snips are taken from).

  For this purpose I created a file that contain the URL of the video, the starting time of the "snip", and its length. for example :

  https://www.youtube.com/watch?v=5-j6LLkpQYY   00:00   01:00
  
  https://www.youtube.com/watch?v=b-DqO_D1g1g   14:44   01:20
  
  https://www.youtube.com/watch?v=DPAgWKseVhg   12:53   01:00

  Meaning that the first part should take the video from the first URL from its beginning and last for a minute, the second part should be taken from the second URL starting from 14:44 (minutes:seconds) and last one minute and 20 seconds and so forth.

  Then all these parts should be concatenated to a single video.

  I’m trying to write a script (I use ubuntu and fluent in several scripting languages) that does that, and I tried to use youtube-dl command line package and ffmpeg, but I couldn’t find the right options to achieve what I need.

  Any suggestions will be appreciated.