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  • Qualité du média après traitement

    21 juin 2013, par

    Le bon réglage du logiciel qui traite les média est important pour un équilibre entre les partis ( bande passante de l’hébergeur, qualité du média pour le rédacteur et le visiteur, accessibilité pour le visiteur ). Comment régler la qualité de son média ?
    Plus la qualité du média est importante, plus la bande passante sera utilisée. Le visiteur avec une connexion internet à petit débit devra attendre plus longtemps. Inversement plus, la qualité du média est pauvre et donc le média devient dégradé voire (...)

  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

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  • Blog series part 2 : How to increase engagement of your website visitors, and turn them into customers

    8 septembre 2020, par Joselyn Khor — Analytics Tips, Marketing

    Long gone are the days of simply tracking page views as a measure of engagement. Now it’s about engagement analysis, which is layered and provides insight for effective data-driven decisions.

    Discover how engaged people are with your website by uncovering behavioural patterns that tell you how well your site and content is or isn’t performing. This insight helps you re-evaluate, adapt and optimise your content and strategy. The more engaged they are, the more likely you’ll be able to guide them on a predetermined journey that results in more conversions ; and helps you reach the goals you’ve set for your business. 

    Why is visitor engagement important ?

    It’s vital to measure engagement if you have anything content related that plays a role in your customer’s journey. Some websites may find more value in figuring out how engaging their entire site is, while others may only want to zone in on, say, a blogging section, e-newsletters, social media channels or sign-up pages.

    In the larger scheme of things, engagement can be seen as what’s running your site. Every aspect of the buyer’s journey requires your visitors to be engaged. Whether you’re trying to attract, convert or build a loyal audience base, you need to know your content is optimised to maintain their attention and encourage them along the path to purchase, conversion or loyalty.

    How to increase engagement with Matomo

    You need to know what’s going right or wrong to eventually be able to deliver more riveting content your visitors can’t help but be drawn to. Learn how to apply Matomo’s easy-to-use features to increase engagement :

    1. The Behaviour feature
    2. Heatmaps
    3. A/B Testing
    4. Media Analytics
    5. Transitions
    6. Custom reports
    7. Other metrics to keep an eye on

    1. Look at the Behaviour feature

    It allows you to learn how visitors are responding to your content. This information is gathered by drawing insight from features such as site search, downloads, events and content interactions. Learn more

    Matomo's behaviour feature

    Matomo’s top five ways to increase engagement with the Behaviour feature :

    Behaviour -> Pages
    Get complete insights on what pages your users engage with, what pages provide little value to your business and see the results of entry and exit pages. If important content is generating low traffic, you need to place it where it can be seen. Spend time where it matters and focus on the content that will engage with your users and see how it eventually converts them into customers.

    Behaviour -> Site search
    Site search tracks how people use your website’s internal search engine. You can see :

    • What search keywords visitors used on your website’s internal search.
    • Which of those keywords resulted in no results (what content your visitors are looking for but cannot find).
    • What pages visitors visited immediately after a search.
    • What search categories visitors use (if your website employs search categories).

    Behaviour -> Downloads
    What are users wanting to take away with them ? They could be downloading .pdfs, .zip files, ebooks, infographics or other free/paid resources. For example, if you were working for an education institution and created valuable information packs for students that you made available online in .pdf format. To see an increase in downloads meant students were finding the .pdfs and realising the need to download them. No downloads could mean the information packs weren’t being found which would be problematic.

    Behaviour -> Events
    Tracking events is a very useful way to measure the interactions your users have with your website content, which are not directly page views or downloads.

    How have Events been used effectively ? A great example comes from one of our customers, Catalyst. They wanted to capture and measure the user interaction of accordions (an area of content that expands or closes depending on how a user interacts with it) to see if people were actually getting all the information available to them on this one page. By creating an Event to record which accordion had been opened, as well as creating events for other user interactions, they were able to figure out which content got the most engagement and which got the least. Being able to see how visitors navigated through their website helped them optimise the site to ensure people were getting the relevant information they were craving.

    Behaviour -> Content interactions
    Content tracking allows you to track interaction within the content of your web page. Go beyond page views, bounce rates and average time spent on page with your content. Instead, you can analyse content interaction rates based on mouse clicking and configuring scrolling or hovering behaviours to see precisely how engaged your users are. If interaction rates are low, perhaps you need to restructure your page layout to grab your user’s attention sooner. Possibly you will get more interaction when you have more images or banner ads to other areas of your business.

    Watch this video to learn about the Behaviour feature

    2. Set up Heatmaps

    Effortlessly discover how your visitors truly engage with your most important web pages that impact the success of your business. Heatmaps shows you visually where your visitors try to click, move the mouse and how far down they scroll on each page.

    Matomo's heatmaps feature

    You don’t need to waste time digging for key metrics or worry about putting together tables of data to understand how your visitors are interacting with your website. Heatmaps make it easy and fast to discover where your users are paying their attention, where they have problems, where useless content is and how engaging your content is. Get insights that you cannot get from traditional reports. Learn more

    3. Carry out A/B testing

    With A/B Testing you reduce risk in your decision-making and can test what your visitors are responding well to. 

    Matomo's a/b testing feature

    Ever had discussions with colleagues about where to place content on a landing page ? Or discussed what the call-to-action should be and assumed you were making the best decisions ? The truth is, you never know what really works the best (and what doesn’t) unless you test it. Learn more

    How to increase engagement with A/B Testing : Test, test and test. This is a surefire way to learn what content is leading your visitors on a path to conversion and what isn’t.

    4. Media Analytics

    Tells you how visitors are engaging with your video or audio content, and whether they’re leading to your desired conversions. Track :

    • How many plays your media gets and which parts they viewed
    • Finish rates
    • How your media was consumed over time
    • How media was consumed on specific days
    • Which locations your users were viewing your content from
    • Learn more
    Media Analytics

    How to increase engagement with Media Analytics : These metrics give a picture of how audiences are behaving when it comes to your content. By showing insights such as, how popular your media content is, how engaging it is and which days content will be most viewed, you can tailor content strategies to produce content people will actually find interesting and watch/listen.

    Matomo example : When we went through the feature video metrics on our own site to see how our videos were performing, we noticed our Acquisition video had a 95% completion rate. Even though it was longer than most videos, the stats showed us it had, by far, the most engagement. By using Media Analytics to get insights on the best and worst performing videos, we gathered useful info to help us better allocate resources effectively so that in the future, we’re producing more videos that will be watched.

    5. Investigate transitions

    See which page visitors are entering the site from and where they exit to. Transitions shows engagement on each page and whether the content is leading them to the pages you want them to be directed to.

    Transitions

    This gives you a greater understanding of user pathways. You may be assuming visitors are finding your content from one particular pathway, but figure out users are actually coming through other channels you never thought of. Through Transitions, you may discover and capitalise on new opportunities from external sites.

    How to increase engagement with Transitions : Identify clearly where users may be getting distracted to click away and where other pages are creating opportunity to click-through to conversion. 

    6. Create Custom Reports

    You can choose from over 200 dimensions and metrics to get the insights you need as well as various visualisation options. This makes understanding the data incredibly easy and you can get the insights you need instantly for faster results without the need for a developer. Learn more

    Custom Reports

    How to increase engagement with Custom Reports : Set custom reports to see when content is being viewed and figure out how engaged users are by looking at different hours of the day or which days of the week they’re visiting your website. For example, you could be wondering what hour of the day performed best for converting your customers. Understanding these metrics helps you figure out the best time to schedule your blog posts, pay-per-click advertising, edms or social media posts knowing that your visitors are more likely to convert at different times.

    7. Other metrics to key an eye on …

    A good indication of a great experience and of engagement is whether your readers, viewers or listeners want to do it again and again.

    “Best” metrics are hard to determine so you’ll need to ask yourself what you want to do or what you want your site to do. How do you want your users to behave or what kind of buyer’s journey do you want them to have ?

    Want to know where to start ? Look at …

    • Bounce rate – a high bounce rate isn’t great as people aren’t finding what they’re looking for and are leaving without taking action. (This offers great opportunities as you can test to see why people are bouncing off your site and figure out what you need to change.)
    • Time on site – a long time on site is usually a good indication that people are spending time reading, navigating and being engaged with your website. 
    • Frequency of visit – how often do people come back to interact with the content on your website ? The higher the % of your visitors that come back time and time again will show how engaged they are with your content.
    • Session length/average session duration – how much time users spend on site each session
    • Pages per session – is great to show engagement because it shows visitors are happy going through your website and learn more about your business.

    Key takeaway

    Whichever stage of the buyer’s journey your visitors are in, you need to ensure your content is optimised for engagement so that visitors can easily spend time on your website.

    “Every single visit by every single visitor is no longer judged as a success or a failure at the end of 29 min (max) session in your analytics tool. Every visit is not a ‘last-visit’, rather it becomes a continuous experience leading to a win-win outcome.” – Avinash Kaushik

    As you can tell, one size does not fit all when it comes to analysing and measuring engagement, but with a toolkit of features, you can make sure you have everything you need to experiment and figure out the metrics that matter to the success of your business and website.

    Concurrently, these gentle nudges for visitors to consume more and more content encourages them along their path to purchase, conversion or loyalty. They get a more engaging website experience over time and you get happy visitors/customers who end up coming back for more.

    Want to learn how to increase conversions with Matomo ? Look out for the final in this series : part 3 ! We’ll go through how you can boost conversions and meet your business goals with web analytics. 

  • Senior Software Engineer for Enterprise Analytics Platform

    28 janvier 2016, par Matthieu Aubry — Jobs

    We’re looking for a lead developer to work on Piwik Analytics core platform software. We have some exciting challenges to solve and need you !

    You’ll be working with both fellow employees and our open-source community. Piwik PRO staff lives in New Zealand, Europe (Poland, Germany) and in the U.S. We do the vast majority of our collaboration online.

    We are a small, flexible team, so when you come aboard, you will play an integral part in engineering. As a leader you’ll help us to prioritise work and grow our community. You’ll help to create a welcoming environment for new contributors and set an example with your development practices and communications skills. You will be working closely with our CTO to build a future for Piwik.

    Key Responsibilities

    • Strong competency coding in PHP and JavaScript.
    • Scaling existing backend system to handle ever increasing amounts of traffic and new product requirements.
    • Outstanding communication and collaboration skills.
    • Drive development and documentation of internal and external APIs (Piwik is an open platform).
    • Help make our development practices better and reduce friction from idea to deployment.
    • Mentor junior engineers and set the stage for personal growth.

    Minimum qualifications

    • 5+ years of experience in product development, security, usable interface design.
    • 5+ years experience building successful production software systems.
    • Strong competency in PHP5 and JavaScript application development.
    • Skill at writing tests and reviewing code.
    • Strong analytical skills.

    Location

    • Remote work position !
    • or you can join us in our office based in Wellington, New Zealand or in Wrocław, Poland.

    Benefits

    • Competitive salary.
    • Equity in Piwik PRO.
    • Remote work is possible.
    • Yearly meetup with the whole team abroad.
    • Be part of a successful open source company and community.
    • In our Wellington (NZ) and Wroclaw (PL) offices : snacks, coffee, nap room, Table football, Ping pong…
    • Regular events.
    • Great team of people.
    • Exciting projects.

    Learn more

    Learn more what it’s like to work on Piwik in our blog post

    About Piwik

    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 help the world liberate their analytics data by building the best open alternative to Google 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.

    About Piwik PRO company

    At Piwik PRO we’re solving hard problems with simple solutions that make our users and customers happy. We practise agile methodology, test driven development and fast release cycles. Our backend is mostly built in modern PHP with a bit of Python. We use MySQL/MariaDB and Redis as data stores. Our frontends is built in JavaScript using AngularJS and jQuery. Our tools include Github, Travis CI, PhpStorm and Slack.

    As a Lead Software Developer for Piwik PRO, you will be writing open source code that will run on more than 200,000 servers and be used in 200+ countries and 50 languages !

    Apply online

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

  • Connection reset by peer, ffmpeg

    18 août 2016, par Johnnylin

    I have tried several ways and done a lot of search. I just cannot figure out why this happens.

    This is the thread. I did almost the same thing.

    https://ffmpeg.org/pipermail/libav-user/2014-March/006356.html

    When you use ffmpeg command line together with ffserver, it works. But when you use sample code. It just does not work.

    What is missing ?

    EDIT

    Hi all,

    I took the muxing.c example and modified it in order to send a stream
    through a network socket. I only made few modifications :

    main function now looks like :

    int main()
    {
       AVOutputFormat *fmt;
       AVFormatContext *oc;
       AVStream *audio_st, *video_st;
       AVCodec *audio_codec, *video_codec;
       double audio_time, video_time;
       int flush, ret;

       /* Initialize libavcodec, and register all codecs and formats. */
       av_register_all();
       avformat_network_init();

       /* allocate the output media context */
       avformat_alloc_output_context2(&oc, NULL, "mpegts", NULL);
       if (!oc) {
           printf("Could not deduce output format from file extension: using
    MPEG.\n");
           avformat_alloc_output_context2(&oc, NULL, "mpegts", NULL);
       }
       if (!oc)
           return 1;

       fmt = oc->oformat;
       //fmt->video_codec = AV_CODEC_ID_MPEG2VIDEO;
       //fmt->audio_codec = AV_CODEC_ID_MP3;

       /* Add the audio and video streams using the default format codecs
        * and initialize the codecs. */
       video_st = NULL;
       audio_st = NULL;

       if (fmt->video_codec != AV_CODEC_ID_NONE)
           video_st = add_stream(oc, &video_codec, fmt->video_codec);
       if (fmt->audio_codec != AV_CODEC_ID_NONE)
           audio_st = add_stream(oc, &audio_codec, fmt->audio_codec);

       /* Now that all the parameters are set, we can open the audio and
        * video codecs and allocate the necessary encode buffers. */
       if (video_st)
           open_video(oc, video_codec, video_st);
       if (audio_st)
           open_audio(oc, audio_codec, audio_st);

      av_dump_format(oc, 0, "http://localhost:8090/feed1.ffm", 1);

       /* open the output file, if needed */
       if (!(fmt->flags & AVFMT_NOFILE)) {
           ret = avio_open(&oc->pb, "http://localhost:8090/feed1.ffm",
    AVIO_FLAG_WRITE);
           if (ret < 0) {
               fprintf(stderr, "Could not open '%s': %s\n", "
    http://localhost:8090/feed1.ffm",
                       av_err2str(ret));
               return 1;
           }
       }

       /* Write the stream header, if any. */
       ret = avformat_write_header(oc, NULL);
       if (ret < 0) {
           fprintf(stderr, "Error occurred when opening output file: %s\n",
                   av_err2str(ret));
           return 1;
       }

       flush = 0;
       while ((video_st && !video_is_eof) || (audio_st && !audio_is_eof)) {
           /* Compute current audio and video time. */
           audio_time = (audio_st && !audio_is_eof) ? audio_st->pts.val *
    av_q2d(audio_st->time_base) : INFINITY;
           video_time = (video_st && !video_is_eof) ? video_st->pts.val *
    av_q2d(video_st->time_base) : INFINITY;

           if (!flush &&
               (!audio_st || audio_time >= STREAM_DURATION) &&
               (!video_st || video_time >= STREAM_DURATION)) {
               flush = 1;
           }

           /* write interleaved audio and video frames */
           if (audio_st && !audio_is_eof && audio_time <= video_time) {
               write_audio_frame(oc, audio_st, flush);
           } else if (video_st && !video_is_eof && video_time < audio_time) {
               write_video_frame(oc, video_st, flush);
           }
       }

       /* Write the trailer, if any. The trailer must be written before you
        * close the CodecContexts open when you wrote the header; otherwise
        * av_write_trailer() may try to use memory that was freed on
        * av_codec_close(). */
       av_write_trailer(oc);

       /* Close each codec. */
       if (video_st)
           close_video(oc, video_st);
       if (audio_st)
           close_audio(oc, audio_st);

       if (!(fmt->flags & AVFMT_NOFILE))
           /* Close the output file. */
           avio_close(oc->pb);

       /* free the stream */
       avformat_free_context(oc);

       return 0;
    }  

    and, in order to avoid a warning about channel layout not specified, I
    added :

    c->channel_layout = av_get_default_channel_layout(c->channels);

    in function AVStream *add_stream(AVFormatContext *oc, AVCodec **codec,
                           enum AVCodecID codec_id)

    just under the row c->channels = 2 ;

    I also raised a ffserver with the following configuration (showing only
    feed lines) :

    <feed>
           File /tmp/feed1.ffm
           FileMaxSize 1GB
           ACL allow 127.0.0.1
           ACL allow 192.168.0.0 192.168.255.255
    </feed>

    ffserver is working fine if I feed it with a ffmpeg commandline, e.g :

    ffmpeg -r 25 -i movie.mp4 -acodec libfdk_aac  -ab 128k -vcodec libx264 -fpre libx264-fast.ffpreset http://localhost:8090/feed1.ffm

    But with my example, I can write only few frames and after that may muxing
    modified program ends with :

    Error while writing video frame : Connection reset by peer

    I tried also different codecs (h264) and format (flv), turning out in a
    different number of frames written, but eventually I got the same error
    above.

    ffserver do not reports errors at all, only write:
    Tue Mar  4 12:55:10 2014 127.0.0.1 - - [POST] "/feed1.ffm HTTP/1.1" 200 4096
    confirming that the communication socket was open

    What am i missing ??

    Thanks