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• How to use YouTube-dl to stream from Bloomberg TV ?

  1er janvier 2020, par Mr. Demetrius Michael

  Any help would be appreciated !

  This isn’t getting the correct stream from Bloomberg LiveTV, and I’m unsure why and how to fix.

  $ youtube-dl https://www.bloomberg.com/live

  Here’s a snippet of the errors that I get from that link :

  [mp4 @ 0x7ffd13860c00] Invalid DTS: 9009 PTS: 3003 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 12012 PTS: 9009 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 21021 PTS: 15015 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 24024 PTS: 21021 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 33033 PTS: 27027 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 36036 PTS: 33033 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 45045 PTS: 39039 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 48048 PTS: 45045 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 57057 PTS: 51051 in output stream 0:0, replacing by guess
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 60060 PTS: 57057 in output stream 0:0, replacing by guess
  
  [mpegts @ 0x7ffd14810000] Invalid timestamps stream=0, pts=963063, dts=969069, size=12512
  
  [mpegts @ 0x7ffd14810000] Invalid timestamps stream=0, pts=969069, dts=972072, size=12513
  
  [hls @ 0x7ffd14000400] Invalid timestamps stream=0, pts=963063, dts=969069, size=12512
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 69069 PTS: 63063 in output stream 0:0, replacing by guess
  
  [hls @ 0x7ffd14000400] Invalid timestamps stream=0, pts=969069, dts=972072, size=12513
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 72072 PTS: 69069 in output stream 0:0, replacing by guess
  
  [mpegts @ 0x7ffd14810000] Invalid timestamps stream=0, pts=975075, dts=981081, size=12512
  
  [mpegts @ 0x7ffd14810000] Invalid timestamps stream=0, pts=981081, dts=984084, size=12513
  
  [hls @ 0x7ffd14000400] Invalid timestamps stream=0, pts=975075, dts=981081, size=12512
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 81081 PTS: 75075 in output stream 0:0, replacing by guess
  
  [hls @ 0x7ffd14000400] Invalid timestamps stream=0, pts=981081, dts=984084, size=12513
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 84084 PTS: 81081 in output stream 0:0, replacing by guess
  
  [mpegts @ 0x7ffd14810000] Invalid timestamps stream=0, pts=987087, dts=993093, size=12512
  
  [mpegts @ 0x7ffd14810000] Invalid timestamps stream=0, pts=993093, dts=996096, size=12513
  
  [hls @ 0x7ffd14000400] Invalid timestamps stream=0, pts=987087, dts=993093, size=12512
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 93093 PTS: 87087 in output stream 0:0, replacing by guess
  
  [hls @ 0x7ffd14000400] Invalid timestamps stream=0, pts=993093, dts=996096, size=12513
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 96096 PTS: 93093 in output stream 0:0, replacing by guess
  
  [mpegts @ 0x7ffd14810000] Invalid timestamps stream=0, pts=999099, dts=1005105, size=12512
  
  [mpegts @ 0x7ffd14810000] Invalid timestamps stream=0, pts=1005105, dts=1008108, size=12513
  
  [hls @ 0x7ffd14000400] Invalid timestamps stream=0, pts=999099, dts=1005105, size=12512
  
  [mp4 @ 0x7ffd13860c00] Invalid DTS: 105105 PTS: 99099 in output stream 0:0, replacing by guess
  
  [hls @ 0x7ffd14000400] Invalid timestamps stream=0, pts=1005105, dts=1008108, size=12513

  Ideally I would be able to get all of their available programming :

  https://www.bloomberg.com/live/us
  
  https://www.bloomberg.com/live/us/btv
  
  https://www.bloomberg.com/live/europe
  
  https://www.bloomberg.com/live/asia
  
  https://www.bloomberg.com/live/australia
  
  https://www.bloomberg.com/live/stream
  
  https://www.bloomberg.com/live/emea
  
  https://www.bloomberg.com/live/asia_stream
  
  https://www.bloomberg.com/live/politics

• Webcam stream with FFMpeg on iPhone

  6 décembre 2011, par Saphrosit

  I'm trying to send and show a webcam stream from a linux server to an iPhone app. I don't know if it's the best solution, but I downloaded and installed FFMpeg on the linux server (following, for those who want to know, this tutorial).
  FFMpeg is working fine. After a lots of wandering, I managed to send a stream to the client launching

  ffmpeg  -s 320x240 -f video4linux2 -i /dev/video0 -f mpegts -vcodec libx264 udp://192.168.1.34:1234

  where 192.168.1.34 is the address of the client. Actually the client is a Mac, but it is supposed to be an iPhone. I know the stream is sent and received correctly (tested in different ways).
  However I didn't managed to watch the stream directly on the iPhone.
  I thought of different (possible) solutions :

  • first solution : store incoming data in a NSMutableData object. Then, when the stream ends, store it and then play it using a MPMoviePlayerController. Here's the code :

    [video writeToFile:@"videoStream.m4v" atomically:YES];
    
    NSURL *url = [NSURL fileURLWithPath:@"videoStream.m4v"];
    
    
    
    MPMoviePlayerController *videoController = [[MPMoviePlayerController alloc] initWithContentURL:url];
    
    
    
    [videoController.view setFrame:CGRectMake(100, 100, 150, 150)];
    
    
    
    [self.view addSubview:videoController.view];
    
    
    
    [videoController play];

    the problem of this solution is that nothing is played (I only see a black square), even if the video is saved correctly (I can play it directly from my disk using VLC). Besides, it's not such a great idea. It's just to make things work.

  • Second solution : use CMSampleBufferRef to store the incoming video. Much more problems comes with this solution : first of all, there's no CoreMedia.framework in my system. Besides I do not get well what does this class represents and what should I do to make it works : I mean if I start (somehow) filling this "SampleBuffer" with bytes I receive from UDP connection, then it will automatically call the CMSampleBufferMakeDataReadyCallback function I set during creation ? If yes, when ? When the single frame is completed or when the whole stream is received ?

  • Third solution : use AVFoundation framework (neither this is actually available on my Mac). I did not understand if it's actually possible to start recording from a remote source or even from a NSMutableData, a char* or something like that. On AVFoundation Programming Guide I didn't find any reference that say if it's possible or not.

  I don't know which one of this solution is the best for my purpose. ANY suggestion would be appreciate.

  Besides, there's also another problem : I didn't use any segmenter program to send the video. Now, if I'm not getting wrong, segmenter needs to split the source video in smaller/shorter video easier to send. If it is right, then maybe it's not strictly necessary to make things work (may be added later). However, since the server is running under linux, I cannot use Apple's mediastreamsegmeter. May someone suggest an opensource segmenter to use in association with FFMpeg ?

  ---

  UPDATE : I edited my question adding more informations on what I did since now and what my doubts are.

• Senior Software Engineer for Enterprise Analytics Platform

  28 janvier 2016, par Matthieu Aubry — Uncategorized

  We’re looking for a lead developer to work on Piwik Enterprise 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 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.
  • 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 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.

  Apply online

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