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• Generating thumbnails from multiple videos on Desktop, using ffmpeg, or something similar

  6 février 2013, par Birk

  Hi guys this is a long shot but here goes...

  I basically have what I mentioned in the title running on my server. When I upload a video ffmpeg decomplies it and gives me screenshots, then I pick a screenshot that I want to use for that video. Currently, my server can process 3 videos at a time. The down side is that this uses up A LOT of the server processing power. :(

  Is there a way, or a program, that can process several video at a time and generate me screenshots on my Desktop ? If this is possible then I can just use my spare computer here to process everything then upload the screenshots/video to my server.

  This is what I basically have running now on the server. kayweb.com.au/blogs/Web-Development/Generating-screenshots-using-FFmpeg

  Something like this, But this thumbnail generator puts everything into one image. I need to be able to choose with thumbnail I want to use.
  http://www.tothepc.com/archives/make-movie-caps-screenshots-with-free-video-thumbnails-maker/

  Anyone have any suggestions ?

• Piping ffmpeg output into ffplay stdin with boost

  21 décembre 2020, par botiapa

  I'm trying to pipe the output of an ffmpeg process into an ffplay process (Sort of like a playback). My problem is the following : If I copy the output character by character (by character I mean char) it works correctly, other than it consuming a whole lot of cpu power. However when I try to pipe chunks into it (by using a buffer), ffplay for some reason doesn't even recognize the input.

  


  bp::ipstream iso;
bp::ipstream ise;
bp::opstream in;
    
bp::child ffmpeg(bp::search_path("ffmpeg"), bp::args({"-loglevel", "quiet", "-f", "pulse", "-i", "default", "-f", "wav", "-bitexact", "-nostdin", "-"}), bp::std_out > iso, bp::std_err > ise);
bp::child ffplay(bp::search_path("ffplay"), bp::args({"-loglevel", "verbose", "-nodisp", "-f", "wav", "-i", "-"}), bp::std_in < in, bp::std_out > bp::null);


  


  Here are the 2 code snippets for comparison :

  


  Here it is copying char by char

  


  while(ffmpeg.running()) {
    char c;
    c = iso.get();
    in << c;
}


  


  And here it is copying with the help of a buffer

  


  char buffer[1024];
while(ffmpeg.running()) {
    iso.get(buffer, 1024);
    in << buffer;
}


  


  I can provide ffplay output if necessary, however I didn't see any errors or things like that.

  


• Piwik awarded Gold Prize at Open Source Software World Challenge

  22 décembre 2014, par Matthieu Aubry — About

  We are excited to announce that Piwik has been awarded the Gold Prize in the Open Source Software World Challenge 2014 !

  

  Winning this award is a testament to the positive impacts of the Piwik platform worldwide. Every day dozens of new people are embracing Piwik to power their web and mobile analytics which gives them full control over their data.

  Every member of the Piwik community, from core developer to beginning user, should be proud to be part of this momentum : congratulations to us all !

  The Open Source World Challenge is the annual competition hosted by the Ministry of Science, ICT and Future Planning of Korea. This competition is mainly intended to promote open source software and expand various exchanges among open source software developers worldwide.

  

  Piwik Awards