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• New cookie behaviour in browsers may cause regressions

  24 février 2020, par Matomo Core Team — Community, Development

  Last year the Chromium browser team announced they would change their default behaviour for cookies. In particular about a property called samesite. Over the last few months, we have made various changes to our cookie handling to get Matomo ready for this. Depending on your setup and the features you use, some things may not work anymore.

  You can avoid most of the issues by using HTTPS on your Matomo, and ideally also use HTTPS on your website(s).

  If you are not running the latest version of Matomo yet (3.13.3 at the time of writing), then we highly recommend that you upgrade as soon as possible. Previous versions are not compatible with these cookie browser changes.

  Opt out screen

  If you embed the opt out screen on your website running on HTTP, there is a chance the Matomo opt out no longer works. In these cases it may still work over http:

  • when the privacy policy page that embeds the opt out screen (via iframe) also has the Matomo JavaScript tracker embedded,
  • and when both the opt out and the JS tracker point to the same Matomo installation.

  In other cases when HTTP is used, the opt out feature will likely be broken.

  We recommend you test whether the opt out on your site still works by opening your privacy policy page in an incognito browser window. Then test to opt out of tracking, and then reload the page. If the checkbox “You are not opted out. Uncheck this box to opt out.” is still ticked, then your opt out is not working.

  If the opt out is not working anymore, it is most likely due to HTTP being used. In that case you should change the opt out URL to HTTPS. For example change from &lt;iframe src=”<strong>http://</strong>…” to &lt;iframe src=”<strong>https://</strong>...” . If your Matomo doesn’t support HTTPS yet, you will need to contact your webhoster or system administrator to get SSL enabled on your Matomo domain.

  JavaScript tracker

  In most cases, everything related to the JavaScript Tracker will still work as expected.

  But there is an edge case : when you are also reading Matomo’s cookie server side. You may be affected by this edge case issue when :

  • you track part of the user behaviour in the browser (using Matomo JS Tracker),
  • and also track user behavior in your server (for example using one of Matomo SDKs in PHP, Java, Python, C#, etc.).

  In that case, for you to still be able to read the so-called visitorId on your server, we recommend you add this line to your JS tracking code :

  _paq.push([‘setSecureCookie’, location.protocol === 'https:']);

  The cookie can be only retrieved if your website is loaded through HTTPS.

  Should you have any questions, or notice anything isn’t working as expected, please visit our forum.

  Third party cookies

  If you are using third party cookies, using HTTPS on your Matomo is now a requirement to make them work across different domains. Otherwise Chrome and in the near future other browsers would not accept the cookie. If you don’t know if you are using third party cookies or first party cookies, you’re likely using first party cookies and this does not affect you.

• Pre-announcement : Piwik Marketplace soon open for paid premium features

  12 octobre 2016, par Piwik Core Team — Community

  Updates : Premium Plugins now available on the Piwik Analytics Marketplace. Further announcements about premium plugins : 1) Powerful Video Analytics and Audio Analytics and 2) A/B Testing Platform for Piwik Analytics.
  

  The goal of the Piwik project is to build the best open digital analytics platform that lets you measure what matters to you while giving you full control of your data. The beauty of the Piwik Analytics platform is that it can be customized and extended by building or installing new features on top of the Piwik core.

  On our open Piwik Marketplace you can already discover and download over 70 free plugins which enrich the functionality of your Piwik in many ways, and themes which change the look and feel of the Piwik user interface. To help users make more of their analytics data and ultimately be more successful, in a few weeks we will offer you the possibility to purchase subscriptions for premium features in the Marketplace.

  

  Get more out of your Piwik

  Opening the Marketplace for paid plugins will bring more premium and enterprise features so you get more out of your Piwik, when you need it. It will also help us, the Piwik team, to further innovate and improve the open-source Piwik platform to realize our mission :

  “To create the leading Free and open source analytics platform, and to support global organisations and communities to keep full control over their data.”

  1-click installation and update

  You will find the new premium features when you browse the Marketplace in your Piwik app and on our Piwik Marketplace website. Purchased plugins will be installable and updatable with one click, just like you are used to from free plugins.

  Sell your plugins on the Piwik Marketplace

  If you are a developer who wants to sell plugins on our Marketplace, please get in touch. As a vendor you will be able to see reports about your sales, upload new versions of your plugins, reply to pre-sales and support questions, and more. By tapping into the Marketplace’s infrastructure and distribution, including secure payments and distributing plugins to customers, developers can focus on building great products.

  Get started developing plugins

  If you are wondering how to get started developing plugins, check out our getting started developer guide and our guide about how to get your plugin ready for the Marketplace.

• Best practice to play segments of larger video files in HTML5 video format

  8 octobre 2015, par zx98

  I have to migrate a legacy project from Windows Media to HTML5 video/audio. The system should provide video/audio content to the web user meeting following criteria :

  1. Playout : Segments (TcIn to TcOut) of large video/audio files should be played "on the fly" to the web user. (Cutting the source material into segments does not work because there is a high overlap rate between segments, so 3-4 times more HDD space and a lot of extra programming would be needed. Markered playout of the large source files is not an option either as there are forbidden parts of the source material which should never be available to the user).
  2. Cutting : In general, users are permitted to make copies of the material. Indeed, by using the dowload function, users can download selected segments. I guess, this is not a problem : a service starts a cutting software (probably ffmpeg) that cuts the video, and the user is notified by email to download the product. (That’s the way I do it now but there might be a more simple option).
  3. Formats : what is the preferred video/audio format that most browsers (Chrome, Firefox, Opera, Android) support ?
  4. Server : If possible, I would keep Windows Server because the database behind is MS SQL Server.

  (Windows Media Server and WMEncoder currently works fine for all the above, however WM is not suppored by browsers any more. That is the reason for reengineering).

  I would appreciate any of your suggestions on how to rebuild this video/audio system. (What software elements to use and how).

  Thank you.

  -------- addition -------
  Dear commenters,
  Thank you for your comments. Please note that the above is one single question, the rest is just a detailed description of the issue/conditions, as recommended by stackoverflow.com. I guess, the answer is also very simple, I try to write it myself :

  1. You should keep the large video/audio files in xxx format because...
  2. You create a playlist file like this example... for each of the the segments.
  3. You install the xxx streaming software component on the web/media server to playout the segments.
  4. You can address and play the segments from the client side web browser like this :...
  5. For asynchronous cutting, yes, I recommend ffmpeg, try these profile settings.

  Just a few parts in bold are missing. Thanks to anyone who can fill them.