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• Opening Video with opencv3 and python on Amazon EC2

  11 octobre 2016, par stml

  I successfully set up python and opencv3 on an t2.micro instance by following these instructions : http://stackoverflow.com/a/38867965/1213715

  The script which worked on my local machine no longer works. The problem seems to be with importing video. The start of my code now looks like this :

  import numpy as np
  
  import cv2
  
  
  
  cap = cv2.VideoCapture('/home/ec2-user/test.mov')
  
  
  
  if(cap.isOpened() == False):
  
      print "Can't open video"
  
      exit()

  This exits every time. I have tried different paths and different video formats (including .avi).

  In other threads, I read that ffmpeg is essential to cv2 video functions, and successfully installed this using the instructions at https://forums.aws.amazon.com/thread.jspa?messageID=524523. I can now run ffmpeg from the command line - but it has not changed the cv2 output.

  Do I need to link ffmpeg to cv2 somehow, or do I need to recompile entirely - and if so, what change should I make to the original installation instructions ?

  Python version 2.7.12

  Opencv version 3.1.0

• laravel ffmpeg upload video in amazon s3 failed 504 gateway Time-out

  21 mai 2020, par Ahmed Al-Rayan

  Why after uploading a video size of more than 1 Giga, I see a problem in the nginx 504 gateway timeout preventing me from completing the processing process. The meaning of the video after uploading starts the processing process and because of this problem it does not go to processing use laravel ffmpeg and use amazon s3 service to store the videos on it and the entire site uploaded to Digital hosting

  


• Cloaked Archive Wiki

  16 mai 2011, par Multimedia Mike — General

  Google’s Chrome browser has made me phenomenally lazy. I don’t even attempt to type proper, complete URLs into the address bar anymore. I just type something vaguely related to the address and let the search engine take over. I saw something weird when I used this method to visit Archive Team’s site :

  
  
  

  There’s greater detail when you elect to view more results from the site :

  
  
  

  As the administrator of a MediaWiki installation like the one that archiveteam.org runs on, I was a little worried that they might have a spam problem. However, clicking through to any of those out-of-place pages does not indicate anything related to pharmaceuticals. Viewing source also reveals nothing amiss.

  I quickly deduced that this is a textbook example of website cloaking. This is when a website reports different content to a search engine than it reports to normal web browsers (humans, presumably). General pseudocode :

  PLAIN TEXT

  C :

  1. if (web_request.user_agent_string == CRAWLER_USER_AGENT)
  2.  return cloaked_data ;
  3. else
  4.  return real_data ;

  You can verify this for yourself using the wget command line utility :

  <br />
$ wget --quiet --user-agent="<strong>Mozilla/5.0</strong>" \<br />
 http://www.archiveteam.org/index.php?title=Geocities -O - | grep \&lt;title\&gt;<br />
&lt;title&gt;GeoCities - Archiveteam&lt;/title&gt;

  $ wget —quiet —user-agent="Googlebot/2.1"
  http://www.archiveteam.org/index.php?title=Geocities -O - | grep \<title\>
  <title>Cheap xanax | Online Drug Store, Big Discounts</title>
  

  I guess the little web prank worked because the phaux-pharma stuff got indexed. It makes we wonder if there’s a MediaWiki plugin that does this automatically.

  For extra fun, here’s a site called the CloakingDetector which purports to be able to detect whether a page employs cloaking. This is just one humble observer’s opinion, but I don’t think the site works too well :