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Autres articles (20)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (4555)

  • Piwik is expanding ! We’re seeking a talented Software Engineer in New Zealand or in Poland

    13 mai 2014, par Matthieu Aubry — About, Community

    At Piwik and Piwik PRO we develop the leading open source web analytics platform, used by more than one million websites worldwide. Our vision is to build the best open alternative to Google Universal Analytics.

    The Piwik platform collects, stores and processes a lot of information : hundreds of millions of data points each month. We create intuitive, simple and beautiful reports that delight our users.

    Are you seeking a new challenge ? We are currently looking for a software engineer or software developer who is passionate about data processing, security, privacy, the open source philosophy and usable interface design.

    We practise agile methodology, test driven development, and fast release cycles. The main technologies we work with are Javascript (AngularJS, jquery), PHP5 and MySQL. You will write open source code that will directly benefit 250,000+ Piwik users in more than 200 countries and 50 languages.

    Responsibilities

    • Write server-side code (PHP5) and front-end code (Javascript) for Piwik platform.
    • Create robust high-volume production applications and develop prototypes quickly.
    • Tackle new problems as we continue to push technology forward.

    Minimum qualifications

    • BA/BS degree in Computer Science or equivalent practical experience.
    • 2 years of relevant work experience in software development.
    • Understanding of, and practical experience with PHP5 and Javascript application development.
    • Strong analytical and coding skills.
    • Excellent communication skills.

    Location

    • Wellington central, New Zealand.
      If you are not in New Zealand, and you are the right candidate, we will help you relocate here !
    • Wrocław, Poland

    Apply online

    To apply for this position, please Apply online here. We look forward to receiving your applications !

  • Piwik is expanding ! We’re seeking a talented Software Engineer in New Zealand or in Poland

    13 mai 2014, par Matthieu Aubry — About, Community

    At Piwik and Piwik PRO we develop the leading open source web analytics platform, used by more than one million websites worldwide. Our vision is to build the best open alternative to Google Universal Analytics.

    The Piwik platform collects, stores and processes a lot of information : hundreds of millions of data points each month. We create intuitive, simple and beautiful reports that delight our users.

    Are you seeking a new challenge ? We are currently looking for a software engineer or software developer who is passionate about data processing, security, privacy, the open source philosophy and usable interface design.

    We practise agile methodology, test driven development, and fast release cycles. The main technologies we work with are Javascript (AngularJS, jquery), PHP5 and MySQL. You will write open source code that will directly benefit 250,000+ Piwik users in more than 200 countries and 50 languages.

    Responsibilities

    • Write server-side code (PHP5) and front-end code (Javascript) for Piwik platform.
    • Create robust high-volume production applications and develop prototypes quickly.
    • Tackle new problems as we continue to push technology forward.

    Minimum qualifications

    • BA/BS degree in Computer Science or equivalent practical experience.
    • 2 years of relevant work experience in software development.
    • Understanding of, and practical experience with PHP5 and Javascript application development.
    • Strong analytical and coding skills.
    • Excellent communication skills.

    Location

    • Wellington central, New Zealand.
      If you are not in New Zealand, and you are the right candidate, we will help you relocate here !
    • Wrocław, Poland

    Apply online

    To apply for this position, please Apply online here. We look forward to receiving your applications !

  • Decoding H.264 stream from dvr

    17 octobre 2013, par Andrew S

    I have a security DVR that uses h264 streams. I have been trying to get this to work with zoneminder. I have successfully logged into the dvr and recieved some form of data streams. The data stream is dumped to a fifo/pipe, and then zoneminder uses ffmpeg to read this in.

    Note : i know very very little about h.264 streams. just enough to be stupid.

    The video only updates about every 15 seconds in ZM. I can dump the stream to a file with ffmpeg or avconv (avconv -i /tmp/mypipe cam.mp4) but it is still not right. However, the file created by avconv is WAY WAY better than the one created by ffmpeg.

    I've included a link to the wireshark dump (I did change the PW and login info, etc...). From the data, It appears that the dvr is adding a header to the h264 data streams. I understand that the h264 stream starts with a (0x00 00 01 67) or (0x00 00 01 61). Here is an example of the header plus start of stream :

    0x33, 0x30, 0x64, 0x63, 0x48, 0x32, 0x36, 0x34, 
    
0x3f, 0x55, 0x00, 0x00, 0x08, 0x00, 0x20, 0x00, 
    
0xa2, 0x7a, 0xea, 0xdc, 0xcf, 0x08, 0x00, 0x00, 
    
0x0d, 0x0a, 0x11, 0x07, 0x13, 0x20, 0x00, 0x00, 
    
0x00, 0x00, 0x00, 0x01, 0x67, 0x42, 0xe0, 0x14, 
    
0xdb, 0x05, 0x87, 0xc4, 0x00, 0x00, 0x00, 0x01, 
    
0x68, 0xce, 0x30, 0xa4, 0x80, 0x00, 0x00, 0x00, 
    
0x01, 0x06, 0xe5, 0x01, 0x51, 0x80, 0x00, 0x00, 
    
0x00, 0x01, 0x65, 0xb8, 0x00, 0x01, 0xa8, 0xac,

    I can see that there are a few frame indicators in this message. The DVR's header appears to be 32 bytes long in this case, and in some other messages in the dump, it appears to be 24 bytes long. I am striping the header off before I dump the stream to the pipe. (I have verified the output doesn't include the dvr's headers in any way.

    What I would like help with is determining what I should be sending to the pipe. should I start with the first h.264 key ? Is there something out of order ? I'm very surprised that ffmpeg is only getting 15 second updates, but avconv is much better (lots of dropped frames, and playback is "sped up".

    using ffmpeg to read the pipe produces a file that shows it's codec as : H264 - MPEG-4 AVC (part 10) (avc1) with a Decoded format : Planar 4:2:0 YUV using vlc.

    Appreciate any help you can provide !

    Wireshark h264 dump

    edit : on Ubuntu 13.04
    ffmpeg version : 6:0.8.6-1ubuntu2
    avconv 0.8.6-6:0.8.6-1ubuntu2

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