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• We are hiring engineers to build an awesome product and platform used by millions of people

  16 février 2016, par Piwik Core Team — Uncategorized

  Are you ready for a new challenge ? Or maybe you know someone who is looking for a change ? We have some exciting problems to solve and are looking for senior developers to work with us and our community on our open source Piwik Analytics platform. Piwik is used by more than one million websites all over the world. It is deployed on more than 300.000 servers and some users track more than 1 billion actions per month.

  What is it like to work on Piwik ?

  We develop this software using modern PHP, MySQL, Redis, AngularJS and more. We provide several kind of APIs and a plugin architecture to allow developers to extend and change Piwik to their needs. However, we would not be Piwik if we stopped at this point ! We want to turn Piwik into an even more awesome product and platform.
  You can imagine there is a lot to do and many challenges to face !

  While one part is to always make Piwik scale better and to improve UI and UX, we also want to provide simple APIs to make the life of developers as pleasant as possible. We aim to solve things the right way and our thousands of unit, integration, system, JavaScript and screenshot tests help us to innovate and to not be afraid of change. We like clean code and constant improvements.

  The Piwik team lives in New Zealand and Europe (Germany). We do the vast majority of our collaboration online. Our values include being open, transparent and sharing knowledge. For this we use tools like GitHub and Slack to communicate and Quake servers to take our minds off complex challenges. We are a small, flexible team, so when you come aboard, you will play an integral part in engineering and have a big impact on the product loved by so many people. You’ll help to create a welcoming environment for new contributors and set an example with your development practices and communications skills.

  Apply now, or spread the word !

  If you have strong skills in PHP send us an email with your CV and tell us a little about yourself and your experience in engineering complex applications.

  Apply for a job here http://piwik.org/jobs/ and if you’re maybe not the right candidate, contribute to the project by sharing this blog post and by sending it to your friends !

• bitmath.h : Cleanups

  29 décembre 2015, par Erik de Castro Lopo

  bitmath.h : Cleanups
  * Drop support from MSVC earlier than 2005.
  
  * Make types of FLAC__clz_uint32() and FLAC__clz_soft_uint32() the same.
  
  * Remove un-needed parens.
  
  * Cleanup FLAC__bitmath_ilog2_wide().
  Patch-from : lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] src/libFLAC/include/private/bitmath.h

• ffmpeg conversion fails for 640x360 video size

  12 novembre 2015, par user3132858

  Can somebody advice how I can fix the ffmpeg error below :

  Array ( [0] => ffmpeg version 2.0.1 Copyright (c) 2000-2013 the FFmpeg developers 
  
  [1] => built on Nov 11 2015 12:17:12 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16) [2] 
  
  => configuration: --enable-gpl --enable-version3 --enable-shared --enable-nonfree 
  
  --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx 
  
  --enable-libx264 --enable-libxvid [3] => libavutil 52. 38.100 / 52. 38.100 [4]
  
  => libavcodec 55. 18.102 / 55. 18.102 [5] => libavformat 55. 12.100 / 55. 12.100 [6] 
  
  => libavdevice 55. 3.100 / 55. 3.100 [7] => libavfilter 3. 79.101 / 3. 79.101 [8] 
  
  => libswscale 2. 3.100 / 2. 3.100 [9] => libswresample 0. 17.102 / 0. 17.102 [10] 
  
  => libpostproc 52. 3.100 / 52. 3.100 [11] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '3.mov': [12] 
  
  => Metadata: [13] => major_brand : qt [14] => minor_version : 537199360 [15] => compatible_brands: qt [16] 
  
  => creation_time : 2005-10-17 22:54:32 [17] => Duration: 00:01:25.50, start: 0.000000, 
  
  bitrate: 307 kb/s [18] => Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), 
  
  yuv420p, 640x480 [SAR 1:1 DAR 4:3], 261 kb/s, 10 fps, 10 tbr, 3k tbn, 25 tbc [19] 
  
  => Metadata: [20] => creation_time : 2005-10-17 22:54:33 [21] => handler_name : 
  
  Apple Video Media Handler [22] => Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 
  
  32000 Hz, mono, fltp, 43 kb/s [23] => Metadata: [24] => creation_time : 2005-10-17 22:54:34 [25] 
  
  => handler_name : Apple Sound Media Handler [26] => [libx264 @ 0x19fbb00] using SAR=944/945 [27] 
  
  => [libx264 @ 0x19fbb00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [28] 
  
  => Output #0, mp4, to '4.mp4': [29] => Metadata: [30] => major_brand : qt [31] 
  
  => minor_version : 537199360 [32] => compatible_brands: qt [33] => Stream #0:0
  
  (eng): Video: h264, yuv420p, 630x472 [SAR 944:945 DAR 4:3], q=-1--1, 900 kb/s, 90k tbn, 
  
  10 tbc [34] => Metadata: [35] => creation_time : 2005-10-17 22:54:33 [36] 
  
  => handler_name : Apple Video Media Handler [37] => Stream #0:1(eng): Audio: aac, 32000 Hz, 
  
  mono, fltp, 128 kb/s [38] => Metadata: [39] => creation_time : 2005-10-17 22:54:34 [40] 
  
  => handler_name : Apple Sound Media Handler [41] => Stream mapping: [42] 
  
  => Stream #0:0 -> #0:0 (mpeg4 -> libx264) [43] => Stream #0:1 -> #0:1 (aac -> aac) [44] 
  
  => Error while opening encoder for output stream #0:0 - maybe incorrect parameters 
  
  such as bit_rate, rate, width or height )

  This is my code :

  $width=640;
  
  $height=360;
  
  $aspect=round($width/$height, 1);
  
  
  
  $command = "/usr/bin/ffmpeg -threads 1 -y -i 3.mov -vf \"scale=min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")) * (gte(a\,".$aspect.")*".$width." + \
  
  lt(a\,".$aspect.")*((".$height."*iw)/ih)) + not(min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")))*iw : \
  
  min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")) * (lte(a\,".$aspect.")*".$height." + \
  
  gt(a\,".$aspect.")*((".$width."*ih)/iw)) + not(min(1\,gt(iw\,".$width.")+gt(ih\,".$height.")))*ih\"  -b:v 900k -acodec aac -strict -2 -ab 96k 4.mp4 ";

  It is rather strange but when I change the width and height parameters to 300 and 200 respectively, the command executes, the error appears when the width x height is 640x360.

  Any ideas of what might be wrong ?

  UPDATE : I am pretty sure the error has got something to do with the audio encoding. If I change the -ab 96k part to -c:a copy, command executes.
  I cannot however use -c:a copy because for some audio formats the video does not play on mobile devices. Therefore i need the audio settings to be fixed and the same for all videos.