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• Revision fd070220ff : Adjust active maxq for GF groups. Currently disabled by default : enabled using

  21 janvier 2015, par Paul Wilkins

  Changed Paths :
   Modify /vp9/encoder/vp9_firstpass.c

  
   Modify /vp9/encoder/vp9_firstpass.h

  
  
  Adjust active maxq for GF groups.

  Currently disabled by default : enabled using
  #define GROUP_ADAPTIVE_MAXQ

  In this patch the active max Q is adjusted for each GF
  group based on the vbr bit allocation and raw first pass
  group error.

  This will tend to give a lower q for easy sections
  and a higher value for very hard sections. As such it is
  expected to improve quality in some of the easier
  sections where quality issues have been reported.

  This change tends to hurt overall psnr but help
  average psnr. SSIM also shows a small gain.

  Average results for derf, yt, std-hd and yt-hd test sets were
  as follows (%change for average psnr, overal psnr and ssim) :-

  derf +0.291, - 0.252, -0.021
  yt +6.466, -1.436, +0.552
  std-hd +0.490, +0.014, +0.380
  yt-hd +5.565, - 1.573, +0.099

  Change-Id : Icc015499cebbf2a45054a05e8e31f3dfb43f944a

• Why are v0, v1, and v2 of ffmpeg still under active development ? What happened to ppa:jon-severinsson/ffmpeg ?

  12 avril 2015, par cxrodgers

  I know about the long history of ffmpeg and libav. Personally, I preferred to use Jon Severinsson’s PPA, as suggested in many answers here on stackoverflow or askubuntu. However, recently this PPA seems to have gone down recently (this page, which is the link everyone always gives, is dead). I don’t see if he put up a newer version, although I admit I find launchpad hard to navigate. Did it get replaced with this one from Doug McMahon or this one from Sam Rog ?

  Ok, so maybe I need to download it myself. I visit the releases page for ffmpeg, and there seems to be simultaneous development of releases from v2 (2.6.2), v1 (1.2.12, from February), and v0 (0.10.16, from March of this year). 0.10 isn’t even the newest of the v0 series, and yet it seems to be the most recently updated of that series, and (coincidentally ?) also the version that I most recently got from the PPA. Admittedly this was on a slightly older distribution (Linux Mint 16).

  ffmpeg -version
  
  ffmpeg version 0.10.12-7:0.10.12-1~saucy1

  So, which version should I download, now that the PPA is gone ? Does it depend on the distribution I’m using ?

• WordPress Analytics plugin WP-Piwik reaches version 1.0.0 (and 50,000 active users)

  29 mai 2015, par André Bräkling — Plugins

  After six years of development, we are proud to announce the 1.0.0 release of our WP-Piwik WordPress plugin !

  Started as a simple plugin to show a selection of statistics within the WordPress dashboard, WP-Piwik has become a full Piwik integration plugin. The plugin automatically adds the Piwik tracking code to your WordPress sites. The plugin displays your analytics reports directly within the WordPress admin panel. WordPress networks (“multisite”), CDN URLs and the Piwik proxy script are also supported.

  According to WordPress.org the plugin is being used by more than 50,000 WordPress sites !

  

  This article explains how to install WP-Piwik and how to configure it to work with your Piwik instance.
  

  Install WP-Piwik

  You can get WP-Piwik using WordPress’ plugin management. Login to your WordPress admin dashboard and go to « Plugins » → « Add New ». Enter « WP-Piwik » into the search field at the top right, press enter and next to WP-Piwik choose « Install Now ».

  

  If you want to use WP-Piwik in your simple WordPress blog you can just click « Activate Plugin » and WP-Piwik will ask you to configure your Piwik connection.

  Running a WordPress network/multisite you can choose to « Network Activate » the plugin after the installation process. In this case, WP-Piwik will be a fully automated feature of your WordPress network automatically tracking your sites in the same Piwik instance in separate Websites.

  Alternatively you can download WP-Piwik manually from the WordPress website and upload all files to your `wp-content/plugins` directory.

  Configure your Piwik connection

  WP-Piwik lets you choose between three connection modes :

  • Self-hosted (HTTP API) : This is the default option for a self-hosted Piwik and should work for most configurations. You just have to know your Piwik URL, which is the URL you enter to access Piwik, and your auth token (see below). WP-Piwik will connect to Piwik using http(s)-requests.
  • Self-hosted (PHP API) : Choose this, if your self-hosted Piwik and WordPress are running on the same machine and you know the full server path to your Piwik instance. Beside the full server path, you also need to know your auth token (see below).
  • Cloud-hosted (Piwik Pro) : If you are using a cloud-hosted Piwik by Piwik Pro, you just need to know your user name and your auth token (see below).

  Setting up WP-Piwik

  To configure WP-Piwik you will need to specify your Authentication token.

  • If the site you want to track in Piwik is already configured in your Piwik, you only need to specify a token_auth for a user with `view` permission.
  • If you want WP-Piwik to create the website in Piwik (or if you use WP-Piwik in network mode which requires to be able to configure your sites), you should specify a token_auth which has Super User access (after the setting up phase is completed you can set the authentication token back to the token of a `view` user).

  To find your token_auth in Piwik, click on your user name in the right right corner of your Piwik dashboard, then click the « API » in the left menu. The API page displays your auth token in a colored box, just behind the “&token_auth=” string. The screenshot below shows the token_auth anonymous, but your real one will be an alpha numerous random string like a1ec31524a8eabc7a546d71d68b28d17.

  

  That’s it. After you entered your connection data and submitted the form, WP-Piwik will welcome you with some information :

  

  You can now start to configure WP-Piwik and enable the tracking code. Learn about any setting by clicking on the small question mark sign. If you have any problem configuring or using WP-Piwik feel free to use the WordPress support forum related to WP-Piwik.

  Translating WP-Piwik

  We invite you to join our translation community at Transifex and help to translate WP-Piwik in more languages !

  Happy WordPress Analytics !