Sur d’autres sites (4337)

• nginx-rtmp video stream seeking functionality

  26 décembre 2020, par Priyansh Singh

  I am trying to make a video streaming service by using nginx-rtmp for reading stream and sending a dash/hls streaming media
Used this link for live streaming media

  


  I used obs for sending the stream to nginx
But it is a live stream and user cant seek the stream

  


  so, is there a way so that users cana actually seek it
Or is there a better way to stream video using dash/hls

  


• C++ OpenCV 3.4 / FFMPEG 3.4.1 VideoWriter and MP4 Output File Format

  11 janvier 2019, par PhilBot

  I’m running on an ARM BeagleBone X-15 Debian machine with Linux Kernel 4.9.35-ti-r44. In my C++ ( Qt 5 ) application, I want to save my cv::Mat frames to an MP4 format video. I have libx264 installed and compiled from scratch both ffmpeg and OpenCv. I can successfully record and view video with MJPEG with the AVI video container type but not MP4. Whenever I try to write an MP4 video, I get run time errors of the form :

  OpenCV: FFMPEG: tag 0x44495658/'XVID' is not supported with codec id 13 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x00000020/' ???'

  I’ve tried various Google answers but none have worked.

  Relevant code :

  cv::Size frameSize = frame.size();
  
  
  
  qDebug() << "Initializing Video Recording to save Video file here: " << destinationFileName;
  
  
  
  std::string filename = destinationFileName.toStdString();
  
  //int fcc =   CV_FOURCC('M','J','P','G');
  
  //int fcc =   CV_FOURCC('X','2','6','4');
  
  int fcc = CV_FOURCC('X','V','I','D');
  
  int fps =   1;
  
  videoRecorder = new cv::VideoWriter(filename,fcc,fps,frameSize);
  
  
  
  ...
  
  
  
  videoRecorder->write(frame);

  I’ve downloaded and built the latest OpenCV 3.4 but the problem persists.
  How can I write to an MP4 File with OpenCV’s video writer ?

  When I try the ’X’,’2’,’6’,’4’ format I get the error :

      Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  OpenCV: FFMPEG: tag 0x34363258/'X264' is not supported with codec id 28 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x31637661/'avc1'
  
  [h264_v4l2m2m @ 0x81042020] Could not find a valid device
  
  [h264_v4l2m2m @ 0x81042020] can't configure encoder
  
  Could not open codec 'h264_v4l2m2m': Unspecified error
  
  Starting

  When I try the ’X’,’V’,’I’,’D’ format I get the error :

  Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  OpenCV: FFMPEG: tag 0x44495658/'XVID' is not supported with codec id 13 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'
  
  Starting

  When I try the ’M’,’P’,’E’,’G’ format I get the error :

  Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  OpenCV: FFMPEG: tag 0x4745504d/'MPEG' is not supported with codec id 2 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'
  
  Starting

  When I try the ’H’,’2’,’6’,’4’ format I get the error :

  OpenCV: FFMPEG: tag 0x34363248/'H264' is not supported with codec id 28 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x31637661/'avc1'
  
  [h264_v4l2m2m @ 0x7fdde340] Could not find a valid device
  
  [h264_v4l2m2m @ 0x7fdde340] can't configure encoder
  
  Could not open codec 'h264_v4l2m2m': Unspecified error
  
  Starting

  When I try the ’M’,’P’,’4’,’V’ format I get the error :

  Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  OpenCV: FFMPEG: tag 0x5634504d/'MP4V' is not supported with codec id 13 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'
  
  Starting

  When I try the ’A’,’V’,’C’,’1’ format I get the error :

  Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  OpenCV: FFMPEG: tag 0x31435641/'AVC1' is not supported with codec id 28 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x31637661/'avc1'
  
  [h264_v4l2m2m @ 0x810f5f50] Could not find a valid device
  
  [h264_v4l2m2m @ 0x810f5f50] can't configure encoder
  
  Could not open codec 'h264_v4l2m2m': Unspecified error
  
  Starting

  When I try the ’D’,’I’,’V’,’X’ format I get the error :

  Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  OpenCV: FFMPEG: tag 0x58564944/'DIVX' is not supported with codec id 13 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'
  
  Starting

  When I try the 0x21 format I get the error :

  Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  OpenCV: FFMPEG: tag 0x00000021/'!???' is not found (format 'mp4 / MP4 (MPEG-4 Part 14)')'
  
  Starting

  Here is my complete class which shows all tried formats :

      #include "downloader.h"
  
  
  
  Downloader::Downloader(QString url, QString destinationFile) : downloadUrl(url) , destinationFileName(destinationFile)
  
  {
  
  
  
      didInitializeVideoWriter = false;
  
  
  
      qDebug() << "Initialized Downloader...";
  
  
  
  }
  
  
  
  Downloader::~Downloader() {
  
  
  
      videoRecorder->release();
  
      delete videoRecorder;
  
  
  
  }
  
  
  
  void Downloader::doDownload()
  
  {
  
      networkManager = new QNetworkAccessManager(this);
  
  
  
      connect(networkManager, SIGNAL(finished(QNetworkReply*)),
  
              this, SLOT(replyFinished(QNetworkReply*)));
  
  
  
      networkManager->get(QNetworkRequest(QUrl(downloadUrl)));
  
  }
  
  
  
  void Downloader::writeFrame(cv::Mat frame) {
  
  
  
      QMutexLocker locker(&videoFrameMutex);
  
  
  
      videoRecorder->write(frame);
  
  
  
  }
  
  
  
  void Downloader::replyFinished(QNetworkReply *reply)
  
  {
  
  
  
      if(reply->error())
  
      {
  
          qDebug() << "ERROR!";
  
          qDebug() << reply->errorString();
  
      }
  
      else
  
      {
  
          //qDebug() << reply->header(QNetworkRequest::ContentTypeHeader).toString();
  
          //qDebug() << reply->header(QNetworkRequest::LastModifiedHeader).toDateTime().toString();
  
          //qDebug() << reply->header(QNetworkRequest::ContentLengthHeader).toULongLong();
  
          qDebug() << reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
  
          qDebug() << reply->attribute(QNetworkRequest::HttpReasonPhraseAttribute).toString();
  
  
  
          QString tempFileName = destinationFileName;
  
          QString jpegTempFilename = QString("%1").arg(tempFileName.replace("mp4","jpeg"));
  
  
  
          qDebug() << "Overwriting: " << jpegTempFilename;
  
          QFile *file = new QFile(jpegTempFilename);
  
          if(file->open(QFile::WriteOnly))
  
          {
  
              file->write(reply->readAll());
  
              file->flush();
  
              file->close();
  
          }
  
          delete file;
  
  
  
          cv::Mat frame = imread(jpegTempFilename.toStdString(), CV_LOAD_IMAGE_COLOR);   // CV_LOAD_IMAGE_COLOR (>0) loads the image in the BGR format
  
          cv::cvtColor(frame,frame,CV_BGR2RGB);
  
  
  
          // Now lazy load the recorder
  
          if ( !didInitializeVideoWriter ) {
  
  
  
              cv::Size frameSize = frame.size();
  
  
  
              qDebug() << "Initializing Video Recording to save Video file here: " << destinationFileName;
  
  
  
              std::string filename = destinationFileName.toStdString();
  
              //int fcc =   CV_FOURCC('M','J','P','G');
  
              int fcc =   CV_FOURCC('X','2','6','4');
  
              //int fcc = CV_FOURCC('X','V','I','D');
  
              //int fcc = CV_FOURCC('M','P','E','G');
  
              //int fcc = CV_FOURCC('H','2','6','4');
  
              //int fcc = CV_FOURCC('M','P','4','V');
  
              //int fcc = CV_FOURCC('A','V','C','1');
  
              //int fcc = CV_FOURCC('D','I','V','X');
  
              //int fcc = 0x21;
  
              //int fcc = 0x00000021;
  
              int fps =   1;
  
              videoRecorder = new cv::VideoWriter(filename,fcc,fps,frameSize);
  
  
  
              qDebug() << "Starting";
  
              frameCounter = 1;
  
              performanceTimer.start();
  
  
  
              didInitializeVideoWriter = true;
  
  
  
          }
  
  
  
          cv::putText(frame,"[REC]",cv::Point(50,50),5,1,cv::Scalar(0,0,225));
  
  
  
          QFuture<void> backgroundRun = QtConcurrent::run(this, &amp;Downloader::writeFrame, frame);
  
          //backgroundRun.waitForFinished();
  
  
  
      }
  
  
  
      reply->deleteLater();
  
  
  
      qDebug() &lt;&lt; "RequestTimer: " &lt;&lt; performanceTimer.elapsed() &lt;&lt; frameCounter;
  
  
  
      // Requests Again
  
      networkManager->get(QNetworkRequest(QUrl(downloadUrl)));
  
  
  
      frameCounter++;
  
  
  
      performanceTimer.restart();
  
  
  
  
  
  }
  
  </void>

  Update - I tried ’a’,’v’,’c’,’1’ and unfortunately that also does not work :

  Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  [h264_v4l2m2m @ 0x810f6aa0] Could not find a valid device
  
  [h264_v4l2m2m @ 0x810f6aa0] can't configure encoder
  
  Could not open codec 'h264_v4l2m2m': Unspecified error
  
  
  
  (qt-downloader:6234): GStreamer-CRITICAL **: gst_element_make_from_uri: assertion 'gst_uri_is_valid (uri)' failed
  
  OpenCV Error: Unspecified error (GStreamer: cannot link elements
  
  ) in CvVideoWriter_GStreamer::open, file /media/usb/opencv/modules/videoio/src/cap_gstreamer.cpp, line 1635
  
  VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps, frameSize, is_color)): raised OpenCV exception:
  
  
  
  /media/usb/opencv/modules/videoio/src/cap_gstreamer.cpp:1635: error: (-2) GStreamer: cannot link elements
  
   in function CvVideoWriter_GStreamer::open

  When I try the X264 FOURCC, the mp4 file is 48 bytes and never grows :

  Initializing Video Recording to save Video file here:  "/tmp/Garage.mp4"
  
  OpenCV: FFMPEG: tag 0x34363258/'X264' is not supported with codec id 27 and format 'mp4 / MP4 (MPEG-4 Part 14)'
  
  OpenCV: FFMPEG: fallback to use tag 0x31637661/'avc1'

  Static Size :

  debian@BeagleBoard-X15:/tmp$ ls -lrt Garage.*
  
  -rw-r--r-- 1 debian debian     48 Dec 24 21:13 Garage.mp4
  
  -rw-r--r-- 1 debian debian 100424 Dec 24 21:14 Garage.jpeg
  
  debian@BeagleBoard-X15:/tmp$ hexdump Garage.mp4 
  
  0000000 0000 2000 7466 7079 7369 6d6f 0000 0002
  
  0000010 7369 6d6f 7369 326f 7661 3163 706d 3134
  
  0000020 0000 0800 7266 6565 0000 0000 646d 7461
  
  0000030

  Here is my ffmpeg build conf :

  debian@BeagleBoard-X15:/tmp$ ffmpeg -buildconf
  
  ffmpeg version N-89524-g74f408cc8e Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
  
    configuration: --enable-gpl --enable-libx264 --enable-pthreads --enable-static --extra-cflags=-I./x264/include --extra-ldflags=-L./x264/lib --extra-libs=-ldl
  
    libavutil      56.  6.100 / 56.  6.100
  
    libavcodec     58.  8.100 / 58.  8.100
  
    libavformat    58.  3.100 / 58.  3.100
  
    libavdevice    58.  0.100 / 58.  0.100
  
    libavfilter     7.  7.100 /  7.  7.100
  
    libswscale      5.  0.101 /  5.  0.101
  
    libswresample   3.  0.101 /  3.  0.101
  
    libpostproc    55.  0.100 / 55.  0.100
  
  
  
    configuration:
  
      --enable-gpl
  
      --enable-libx264
  
      --enable-pthreads
  
      --enable-static
  
      --extra-cflags=-I./x264/include
  
      --extra-ldflags=-L./x264/lib
  
      --extra-libs=-ldl

• Piwik is now Matomo – Announcement

  
  9 janvier 2018, par Matomo Core Team

  You may be surprised to read this announcement, but no stress, take a deep breath, nothing big is going to happen, it is just our name that is changing and here are the reasons why.

  

  Why are we changing from Piwik to Matomo ?

  “After an epic 10 year journey creating and perfecting the best open digital analytics solution, we felt it was a good time to refresh our brand to reflect how far we have come and to reaffirm our vision :
  To create, as a community, the leading international open source digital analytics platform, that gives every user full control of their data.”

  Matthieu Aubry, creator of Piwik

  As projects evolve, so do names. After 10 years of Piwik and the amazing achievement of building the top open source analytics software that gives every user full control of their data, we are now looking forward to the next chapter. Thus, Piwik, the community project, will now become Matomo. The only change is our name, everything else stays the same.

  This will allow users to take a fresh look at what we’ve become today and acknowledging all of the community’s hard work over the past 10 years. In addition, we also want our name to be unique, ensuring that it is not shared with any other company to remove any possible confusion or affiliations. Piwik is already used on over 1 million websites and with Matomo, we hope to reach our maximum potential.

  With the strong focus on privacy worldwide and the upcoming privacy regulations about to be legislated in Europe, it is clear that we were on the right mission from the very beginning. With the upcoming big release Matomo 4.0 planned for this year, new privacy protections will bring users the tools to be compliant with the GDPR privacy laws. And Matomo will grow in line with these regulations, with a very clear and focused vision.

  Changing our name is an exciting opportunity for us, and we hope you love the name Matomo as much as we do.

  Matomo FAQs

  So what is going to change for me ?

  Well, basically nothing, the name will change but the values stay the same : Matomo (Piwik) will continue to be free and always will be.

  Also the same people stay behind the project. We are motivated more than ever to take this project to the next level.

  Why not keep the name Piwik ?

  For a few reasons, one of which is to ensure that Matomo does not/will not share its name with any other businesses unlike Piwik. We also want to protect the Matomo brand and for it to remain the open source community project name forever.

  Where does the name Matomo come from ?

  We loved the name Piwik and were looking for something that sounded just as good ! Initially we wanted to have an acronym based on key terms, such as Free, Open Source and Privacy, but none really fit us perfectly.

  Until we found Matomo ! Easily pronounced in all languages. Short enough to remember. Concise. And best of all… Matomo means honesty in Japanese. Which aligns with one of our key values – transparency.

  We love the name Matomo and hope you do too.

  What is the vision of Matomo ?

  

  We have come a long way in those 10 years ! However, our mission statement remains the same :

  “To create, as a community, the leading international open source digital analytics platform, that gives every user full control of their data.”

  Matomo provides a range of amazing and innovative features, allowing you to get a 360 view of your visitors. These insights are invaluable to help understand behavior, keep track of goals, and increase conversion rates and revenue.

  Who will deliver Matomo professional services ?

  Any company who wishes to. The only exception is that no companies will be allowed to have the name Matomo.

  Our company providing professional services is and will remain InnoCraft.

  Where can I follow the Matomo project ?

  Our new website will be matomo.org (automatically redirected from Piwik.org)

  Follow our new Twitter : twitter.com/matomo_org

  Github : github.com/matomo-org

  Facebook : facebook.com/Matomo.org

  Linkedin : linkedin.com/company/matomo/

  If you are already following us on social media, you will be kept up to date with Matomo automatically as all social media accounts will be redirected.

  How should I pronounce Matomo ?

  If you’re wondering how to say ‘Matomo’, you can find out by clicking play :

  Where can I see a demo of Matomo ?

  On demo.matomo.org

  Where can I download Matomo first release ?

  On matomo.org/download

  (Matomo 3.3.0 will be released in the next few days)

  What is the new logo ?

  Check it out below.

  

  Matomo trademark Policy

  Matomo is an internationally registered trademark of Matthieu Aubry, Founder of Piwik (now Matomo).

  Information about how to use the name Matomo (and logo) can be found here : matomo.org/trademark/

  What are the next big steps ?

  We will keep it simple for our valued users. As it is just a name change, the only thing you will notice is that the Piwik brand will gradually be replaced on the websites you are used to seeing the name on. The first version of Matomo will be available in just a few days for download. The software version numbers stay the same : the next release after Piwik 3.2.1 will be Matomo 3.3.0.

  All our public HTTP APIs and Tracking SDKs will continue working normally. As you can imagine, there is a lot of work and complexity behind slowly updating all the SDKs and keeping backwards compatibility, so our renaming project will take a few weeks to complete.

  The Matomo trademark will later be transferred into the Matomo foundation, a non-profit that will be dedicated to promoting and ensuring access to Matomo and our related open source projects in perpetuity.

  ---

  Thank you

  Thank you for continuing to support our project, alongside our 20+ Matomo core team members and more than 500 contributors.

  Please help to spread the word about this announcement by sharing it with friends or or colleagues who may benefit from using Matomo Analytics !

  The post Piwik is now Matomo – Announcement appeared first on Analytics Platform - Matomo.