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• ffmpeg split avi into frames with known frame rate

  31 mai 2016, par Myx

  I posted this as comments under this related thread. However, they seem to have gone unnoticed =(

  I’ve used

  ffmpeg -i myfile.avi -f image2 image-%05d.bmp

  to split myfile.avi into frames stored as .bmp files. It seemed to work except not quite. When recording my video, I recorded at a rate of 1000fps and the video turned out to be 2min29sec long. If my math is correct, that should amount to a total of 149,000 frames for the entire video. However, when I ran

  ffmpeg -i myfile.avi -f image2 image-%05d.bmp

  I only obtained 4472 files. How can I get the original 149k frames ?

  I also tried to convert the frame rate of my original AVI to 1000fps by doing

  ffmpeg -i myfile.avi -r 1000 otherfile.avi

  but this didn’t seem to fix my concern.

• ffmpeg generated videos crashes on iOS

  31 octobre 2014, par Deez

  I have a PHP based web page where users can upload their images and those are later turned into a mp4 video using ffmpeg. The web server where the videos are generated, is hosted on CentOS. The process is like this :

  1) Convert each image to a few seconds long mp4 video
  ffmpeg -y -loop 1 -i step1.jpg -c:v libx264 -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -t 5 -pix_fmt yuv420p step1.mp4

  2) Convert each video to mpg for merging
  ffmpeg -y -i step1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts step1.mpg
  (these 2 steps are repeated for each image that is uploaded)

  3)Finally - merge all steps together to make one mp4 video
  ffmpeg -y -i "concat:step1.mpg|step2.mpg|step3.mpg" -c copy video.mp4

  The video always works on Windows computers, but when player on Apple iOS, it crashes after the first merge. Either the video player displays error, or the video just is not played correctly. What could possibly be the issue ? Thanks.

• Piwik PRO is hiring a Technical Support Specialist (Remote)

  13 mars 2015, par Piwik Core Team — 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 build the best open alternative to Google Universal Analytics. We are growing and now looking for a Technical Support Specialist !

  What will you be doing ?

  • Supporting Piwik PRO clients on a daily basis – providing rapid responses via phone and email.
  • Participating in calls with Piwik PRO clients analyzing requirements for enterprise customers.
  • Onboarding clients – planning and coordinating the implementation with the dedicated technical team.
  • Communicating complex problems to the dedicated technical team.

  We can promise you :

  • A competitive salary.
  • The opportunity to develop your skills and gain more experience by working on exceptional projects.
  • Access to a regularly updated resource library and the opportunity to contribute to it.
  • Flexible working hours.

  Desired Skills and Experience

  You won’t make it without :

  • A solid technical background and a familiarity with the IT sector.
  • A receptive mind.
  • Great English communication skills (speaking, reading, writing, and listening).
  • Previous experience of working with corporate clients and a sixth sense for striking up relationships.
  • Appropriately mixed abilities : solid communication skills, inquisitiveness and an analytical mind (have the ability to draw conclusions based on gathered data).
  • Great self-organization skills.

  About Piwik PRO

  At Piwik and Piwik PRO we develop the leading open source web analytics platform, used by over 1.1M websites worldwide and is currently ranked the 7th most used web analytics tool in the world. Our vision is to build the best open alternative to Google Universal 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.

  Piwik PRO provides cloud hosting solutions and enterprise-level support and consultancy services. We’re in the process of expanding our US team and are currently seeking to hire a Technical Support Specialist who will focus on assisting our US clients.

  Location

  Ideally you will be located in the USA or Canada (Remote work).

  Apply online

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