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• How can I resize an image then centralize it with a white background ? Can it be done using php-Imagine library ?

  6 février 2017, par BOBO

  The effect I would like to generate is exactly like the example in
  this StackOverflow thread : (Related Question)

  1.Resize image
  2.Keep proportion
  3.Add or Fill none-image areas with white background

  Here are three examples of this process below :
  1. If original is square no matter 640*640 or 1024*1024, just resize it to target dimension e.g. 480*480 will work.
  

  2. If the original input is vertical rectangular,the output should not be cropped
     and still be centerlized as below (the red dash edge marker is just make it easier to see the background is white and the proportion is kept after image resized to 480*480 px)
     

  3. if the original input is horizontal rectangular, output like below, white background, keeps proportion and image uncroped , thus without losing anything after the image processing.
     

  So after I’ve clarified such a question,
  I would like to know :

  1. Is there a general name of such Custom Image Resize mentioned above ?
  2. would like to know how to achieve it using php image library Imagine ?
     is it doable using php-imagine, or have to switch to another library, e.g imagemagick ?

  P.S. If you would like to achieve the effect either in image-resizing or video resizing, you can use below FFMPEG single-line command.
  (thanks to @Mulvya, yes below code applies both to videos and image formats)

  [run below built-in code in ffmpeg console to achieve the mentioned resize effect]

  [video resize]

  ffmpeg -i "[raw video url or videofile location.mp4]"  -vf "scale=iw*min(480/iw\,480/ih):ih*min(480/iw\,480/ih),pad=480:480:(480-iw)/2:(480-ih)/2:color=white" [save_path_and_filename].mp4  

  [image resize]

  ffmpeg -i "[raw image url or imagefile location.jpg]"  -vf "scale=iw*min(480/iw\,480/ih):ih*min(480/iw\,480/ih),pad=480:480:(480-iw)/2:(480-ih)/2:color=white" [save_path_and_filename].jpg

• Matomo to end support for Internet Explorer 11

  21 septembre 2021, par Matomo Core Team — Community

  A lot of the Matomo user interface is built on top of a programming framework called “Angular.js”. The support for this framework will end very soon, meaning we have to migrate the Matomo user interface to an alternative framework. The Matomo development team has chosen this new framework to be “Vue.js 3”.

  Unfortunately, Vue.js does not support Internet Explorer 11 (IE 11). Therefore, we have to drop the support for IE 11. Many other popular services like Microsoft and WordPress recently did the same. This is happening because IE 11 was released about 8 years ago and is now used by less than 0.5% of the internet. 

  When will this change happen ?

  Our next release (Matomo 4.5) will still support IE 11. It will show a notification in the user interface if you are using Internet Explorer to make you aware of this upcoming change. 

  When Matomo 4.6 is released around November 2021, then IE 11 will no longer be supported.

  What does “end support” mean ?

  The Matomo user interface will work less and less over time for people using IE 11 as a browser. While Matomo 4.6 might still mostly work with IE 11, once we migrate more of the user interface the functionality will stop working completely. It’s possible that even Matomo 4.6 will no longer be functional with IE 11 at all.

  What should I do now ?

  If you are impacted by this, then we strongly recommend that you switch to a more modern browser. Preferably a privacy-friendly browser like Mozilla Firefox or Brave. But any modern browser including Microsoft Edge, Safari and Google Chrome will work just fine.

  If you can’t use a different browser and you are using Matomo On-Premise, then you can install and configure this new plugin which lets you only receive Matomo core updates that are compatible with IE 11. This will prevent you from accidentally upgrading to a Matomo core release that doesn’t work with IE 11, and you can still receive critical security updates and bug fixes until February 2022.

  Will this affect the Matomo JavaScript tracker ?

  No, all visitors using IE 11 will still be tracked and Matomo tracker will support the same browsers as before. Meaning also some older versions of Internet Explorer are still supported.

  Have any questions about this ?

  Get in touch with us 

• How to stream live h.264 (IP camera) video to browser ? (bonus : low bandwidth and latency)

  4 octobre 2018, par Ryan Griggs

  I need to stream live h.264-encoded video from an IP camera to the browser, while supporting all common browsers and mobile devices (i.e. Android, Firefox, Chrome, IE, Safari (Mac OS and iOS)), and while keeping bandwidth requirements and latency to a minimum.

  MPEG-DASH requires browser support for Media Source Extensions, which are NOT supported by iOS. So that’s out.

  HLS is only supported by Safari and Edge.

  Also DASH seems to impose a latency of several seconds, which is not preferable.

  I would like to be able to chunk the incoming h.264 data (i.e. fragmented MP4), pass the chunked data to the browser via Websockets, then dump the chunks into some sort of player as they arrive.

  Broadway and its forks are a javascript h.264 decoder, and there is a Broadway-stream project that supports streams instead of files, but the docs are poor and I can only find examples of streaming when the source is not live.

  The most pressing question is : how do I hand the "chunked data" to a player or Video HTML element as it arrives at the browser ?

  I think the ideal setup would be to

  1. Use ffmpeg to transcode the original video to a chunked format (fMP4)
  2. Pipe the chunked output to a Node JS app which emits each chunk out through a Websocket to all connected viewers
  3. Viewers’ browsers dump each incoming chunk into some sort of decoder which renders the video.

  I’m clear up to the point of handing the received chunks to a video decoder. How can that be done without depending on Media Source Extensions, and allowing viewers to join the stream at random times ?