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• Senior Software Engineer to join Piwik Product Engineering team

  10 janvier 2015, par Matthieu Aubry — Jobs

  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.

  Are you seeking a new challenge ? We are currently looking for a full time Software Developer to join our small and dedicated Product Engineering team.

  At Piwik PRO we practise agile methodology, test driven development and fast release cycles. The main technologies we work with are PHP5, JavaScript (AngularJS, jQuery) and MySQL and our tools include PhpStorm, Github, Travis CI and Slack.

  As a Software Developer for Piwik PRO, you will be writing open source code that will directly benefit 250,000+ Piwik users in 200+ countries and 50 languages.

  Key Responsibilities

  • Writing server-side code (PHP 5) and front-end code (JavaScript).
  • Creating robust high-volume production applications and developing prototypes quickly.
  • Tackling new problems as we continue to push technology forward.
  • Assisting other developers by writing peer code reviews.
  • Improving and updating our platform developer guides.
  • Lead by example, able to self manage and use initiative to get things done.

  Minimum qualifications

  • Experience in product development, security, the open source philosophy and usable interface design.
  • Understanding of, and practical experience with PHP5 and JavaScript application development.
  • 3+ years experience building successful production software systems.
  • Solid knowledge of testing principles and OOP.
  • Strong analytical and coding skills.
  • Strong written communication.

  Location

  • Offices based in Wellington, New Zealand or Wrocław, Poland.
  • However remote work is also possible.

  Apply online

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

• Senior Software Engineer to join Piwik Product Engineering team

  10 janvier 2015, par Matthieu Aubry — Jobs

  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.

  Are you seeking a new challenge ? We are currently looking for a full time Software Developer to join our small and dedicated Product Engineering team.

  At Piwik PRO we practise agile methodology, test driven development and fast release cycles. The main technologies we work with are PHP5, JavaScript (AngularJS, jQuery) and MySQL and our tools include PhpStorm, Github, Travis CI and Slack.

  As a Software Developer for Piwik PRO, you will be writing open source code that will directly benefit 250,000+ Piwik users in 200+ countries and 50 languages.

  Key Responsibilities

  • Writing server-side code (PHP 5) and front-end code (JavaScript).
  • Creating robust high-volume production applications and developing prototypes quickly.
  • Tackling new problems as we continue to push technology forward.
  • Assisting other developers by writing peer code reviews.
  • Improving and updating our platform developer guides.
  • Lead by example, able to self manage and use initiative to get things done.

  Minimum qualifications

  • Experience in product development, security, the open source philosophy and usable interface design.
  • Understanding of, and practical experience with PHP5 and JavaScript application development.
  • 3+ years experience building successful production software systems.
  • Solid knowledge of testing principles and OOP.
  • Strong analytical and coding skills.
  • Strong written communication.

  Location

  • Offices based in Wellington, New Zealand or Wrocław, Poland.
  • However remote work is also possible.

  Apply online

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

• Applying fades between images ffmpeg command

  29 octobre 2015, par Jon Stevens

  I am trying to create a video slideshow that fade out/in between each image solely from an ffmpeg cli command. After researching this for hours, the only way I discovered that this was possible was to use the -filter_complex argument and pass in all images and specify a complex filter that defines multiple fades out and back in that I could time to happen between frames. The command I have so far :

  ffmpeg -y -framerate 1/5 \
  
  -loop 1 -i img-1.jpg \
  
  -loop 1 -i img-2.jpg \
  
  -loop 1 -i img-3.jpg \
  
  -filter_complex \
  
  "[1:v]fade=out:4:d=1,fade=in:5:d=1[fad1]; \
  
  [2:v]fade=out:9:d=1,fade=in:10:d=1[fad2]; \
  
  [3:v]fade=out:14:d=1,fade=in:15:d=1[fad3];" \
  
  -c:v libx264 -r 25 -pix_fmt yuv420p test.mp4

  Here’s the output from executing this command :

   ffmpeg version 2.6.4 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 5.1.1 (GCC) 20150618 (Red Hat 5.1.1-4)
  
    configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --enable-bzlib --disable-crystalhd --enable-frei0r --enable-gnutls --enable-ladspa --enable-libass --enable-libcdio --enable-libdc1394 --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
  
    libavutil      54. 20.100 / 54. 20.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 25.101 / 56. 25.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.102 /  5. 11.102
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Input #0, image2, from img-1.jpg':
  
    Duration: 00:00:05.00, start: 0.000000, bitrate: 141 kb/s
  
      Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 72:72 DAR 16:9], 0.20 fps, 0.20 tbr, 0.20 tbn, 0.20 tbc
  
  Input #1, image2, from img-2.jpg':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: 17789 kb/s
  
      Stream #1:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 67:67 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  Input #2, image2, from 'img-3.jpg':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: 17764 kb/s
  
      Stream #2:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 62:62 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  [AVFilterGraph @ 0xbc2a00] No such filter: ''
  
  Error configuring filters.

  All I am trying to do is create a video slideshow with fades/transitions between images. Any help is greatly appreciated !