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• Live jpeg sequence image to RTMP fps drop

  6 avril 2021, par m0j1

  I want to encode a sequence of jpg images (captured from my camera in unity) to h264 codec live stream video. I'm using the following command in ffmpeg :

  


  -f image2pipe -vcodec mjpeg -r 25 -i  udp://127.0.0.1:6000  -r 25 -preset slow -vcodec libx264 -tune zerolatency -b:v 800k -maxrate 800k -bufsize 400k  -f mpegts udp://127.0.0.1:5701


  


  On the other side, I playback this live stream using ffplay (ffplay -fflags nobuffer -flags low_delay -framedrop udp ://192.168.189.112:5701) and everything seems to be fine.
  
After that, I want to use a media server to restream this to other clients so I chose node media server and with the following ffmpeg comment I stream my image sequence to my media server :

  


  -f image2pipe -vcodec mjpeg -r 25 -i  udp://127.0.0.1:6000  -r 25 -preset slow -vcodec libx264 -tune zerolatency -b:v 800k -maxrate 800k -bufsize 400k  -f flv rtmp://192.168.189.112/live/STREAM_NAME


  


  But when I use ffplay to playback this live stream using the following command I get a choppy stream that looks like it is in 5fps :

  


  ffplay -fflags nobuffer -flags low_delay -framedroprtmp://192.168.189.112/live/STREAM_NAME

 


  


  I also tried to first record my live stream using node media server and then play it to see if I had received the data right and surprisingly the recorded video is perfect.

  
I wanted to ask if someone has any tips or experience about this.

  


• Senior Software Engineer for Enterprise Analytics Platform

  28 janvier 2016, par Matthieu Aubry — Jobs

  We’re looking for a lead developer to work on Piwik Analytics core platform software. We have some exciting challenges to solve and need you !

  You’ll be working with both fellow employees and our open-source community. Piwik PRO staff lives in New Zealand, Europe (Poland, Germany) and in the U.S. We do the vast majority of our collaboration online.

  We are a small, flexible team, so when you come aboard, you will play an integral part in engineering. As a leader you’ll help us to prioritise work and grow our community. You’ll help to create a welcoming environment for new contributors and set an example with your development practices and communications skills. You will be working closely with our CTO to build a future for Piwik.

  Key Responsibilities

  • Strong competency coding in PHP and JavaScript.
  • Scaling existing backend system to handle ever increasing amounts of traffic and new product requirements.
  • Outstanding communication and collaboration skills.
  • Drive development and documentation of internal and external APIs (Piwik is an open platform).
  • Help make our development practices better and reduce friction from idea to deployment.
  • Mentor junior engineers and set the stage for personal growth.

  Minimum qualifications

  • 5+ years of experience in product development, security, usable interface design.
  • 5+ years experience building successful production software systems.
  • Strong competency in PHP5 and JavaScript application development.
  • Skill at writing tests and reviewing code.
  • Strong analytical skills.

  Location

  • Remote work position !
  • or you can join us in our office based in Wellington, New Zealand or in Wrocław, Poland.

  Benefits

  • Competitive salary.
  • Equity in Piwik PRO.
  • Remote work is possible.
  • Yearly meetup with the whole team abroad.
  • Be part of a successful open source company and community.
  • In our Wellington (NZ) and Wroclaw (PL) offices : snacks, coffee, nap room, Table football, Ping pong…
  • Regular events.
  • Great team of people.
  • Exciting projects.

  Learn more

  Learn more what it’s like to work on Piwik in our blog post

  About Piwik

  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.

  About Piwik PRO company

  At Piwik PRO we’re solving hard problems with simple solutions that make our users and customers happy. We practise agile methodology, test driven development and fast release cycles. Our backend is mostly built in modern PHP with a bit of Python. We use MySQL/MariaDB and Redis as data stores. Our frontends is built in JavaScript using AngularJS and jQuery. Our tools include Github, Travis CI, PhpStorm and Slack.

  As a Lead Software Developer for Piwik PRO, you will be writing open source code that will run on more than 200,000 servers and be used in 200+ countries and 50 languages !

  Apply online

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

• Having trouble building FFmpeg using GNU make, Makefile:182 : /tests/Makefile : No such file or directory

  24 mai 2022, par Daedalus

  I'm having trouble building FFmpeg as a library to use in a project in vscode C++. I have no experience working with C/C++ libraries and would greatly appreciate any help. I've installed chocolatey and GNU make (GNU Make 4.3) with that, and the source code for FFmpeg. I cannot run make, as it tells me to do in the INSTALL.md file of the source code. I've been using command prompt to run the commands. Here are my errors :

  


  C:\ffmpeg>PowerShell ./configure

C:\ffmpeg>make
Makefile:182: /tests/Makefile: No such file or directory
make: *** No rule to make target '/tests/Makefile'.  Stop.

C:\ffmpeg>make install
Makefile:182: /tests/Makefile: No such file or directory
make: *** No rule to make target '/tests/Makefile'.  Stop.


  


  I've installed FFmpeg from github, and I can't find a working prebuilt library. I've tried different variations of the commands, with PowerShell and directories, but nothing has worked. This is INSTALL.md :

  


  


  Installing FFmpeg

  


  


  1. Type ./configure to create the configuration. A list of configure options is printed by running configure --help.

     


     configure can be launched from a directory different from the FFmpeg sources to build the objects out of tree. To do this, use an
absolute path when launching configure, e.g.
/ffmpegdir/ffmpeg/configure.

     


  


  2. Then type make to build FFmpeg. GNU Make 3.81 or later is required.

     


  


  3. Type make install to install all binaries and libraries you built.

     


  


  


  NOTICE

  


  

  • Non system dependencies (e.g. libx264, libvpx) are disabled by default.

  


  


  


  Any help would be greatly appreciated. Thanks in advance.