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• NodeJs watch file Chokidar and create Thumbnail with FFMPEG, Code is hanging. Memory jam ?

  30 juillet 2021, par Mert

  I'm trying watch file Chokidar. Mp4 files in Folder. And I'm trying watch folder with create thumnail. But My code is hanging. It's getting stuck. I'm waiting ten min but i didnt get error and my code worked more little. Again, I'm waiting more ten min. But no change anything.

  


  Code :

  


  let fs = require('fs');
var chokidar = require('chokidar');
const ffmpegInstaller = require('@ffmpeg-installer/ffmpeg');
const ffmpeg = require('fluent-ffmpeg');
ffmpeg.setFfmpegPath(ffmpegInstaller.path)

var counter = 0

var Mywatcher = chokidar.watch('Z:\\WatchFolder', {ignored: /^\./, persistent: true, usePolling: true});
Mywatcher
  .on('add', function(path) {
    worder = '.mp4'
    if(path.includes(worder)){
 
            counter = counter + 1 
            
            console.log('added' + counter)

            ffmpeg({ source: path })
            .on('filenames', (filenames) => {
                console.log('Created file names', filenames);
            })
            .on('end', () => {
                console.log('Job done');
            })
            .on('error', (err) => {
                console.log('Error', err);
            })
            .takeScreenshots({
                filename: counter +'.jpg',
                timemarks: [ 2 ],
             
            }, 'public/images/thumbnail/');
      
    }

    })

  .on('change', function(path) {console.log('File', path, 'has been changed');})



  .on('unlink', function(path) {

  })




  .on('error', function(error) {console.error('Error happened', error);})


  


  First Result : 1300 thumbnail completed. But not yet created. Thumbnail's folder is empty. My code is stuck.

  


  added13023
Created file names [ '13023.jpg' ]
added13024
Created file names [ '13024.jpg' ]
added13025
Created file names [ '13025.jpg' ]
added13026
Created file names [ '13026.jpg' ]
added13027
Created file names [ '13027.jpg' ]
added13028
Created file names [ '13028.jpg' ]
added13029
Created file names [ '13029.jpg' ]
added13030
Created file names [ '13030.jpg' ]
added13031
Created file names [ '13031.jpg' ]
added13032
Created file names [ '13032.jpg' ]
added13033
Created file names [ '13033.jpg' ]
added13034
Created file names [ '13034.jpg' ]
added13035
Created file names [ '13035.jpg' ]
added13036
Created file names [ '13036.jpg' ]


  


  Again I'm trying, i write 'nodemon start' and Result :

  


  Created file names [ '13026.jpg' ]
added13027
Created file names [ '13027.jpg' ]
added13028
Created file names [ '13028.jpg' ]
added13029
Created file names [ '13029.jpg' ]
added13030
Created file names [ '13030.jpg' ]
added13031
Created file names [ '13031.jpg' ]
added13032
Created file names [ '13032.jpg' ]
added13033
Created file names [ '13033.jpg' ]
added13034
Created file names [ '13034.jpg' ]
added13035
Created file names [ '13035.jpg' ]
added13036
Created file names [ '13036.jpg' ]
added13037
Created file names [ '13037.jpg' ]


  


  How can i fix it ? Thanks all. Regards.

  


• Cannot watch RTSP stream from Live555 using FFMPEG

  30 octobre 2023, par bobku123

  I am trying to create an RTSP server using Live555, with the stream source being raw h264 video of my USB webcam encoded with FFMPEG, sent over UDP.

  


  I have used BasicUDPSource from Live555 sources as my FramedSource class. I created my own MediaSubsession class as per the Live555 FAQ. Here is the source code I created so far :

  


  #include "liveMedia.hh"

#include "BasicUsageEnvironment.hh"
#include "announceURL.hh"
#include "FFMPEGH264StreamMediaSubsession.hh"
#include "BasicUDPSource.hh"
#include "H264VideoStreamFramer.hh"
#include "H265VideoRTPSink.hh"

UsageEnvironment* env;

// To make the second and subsequent client for each stream reuse the same
// input stream as the first client (rather than playing the file from the
// start for each client), change the following "False" to "True":
Boolean reuseFirstSource = False;

// To stream *only* MPEG-1 or 2 video "I" frames
// (e.g., to reduce network bandwidth),
// change the following "False" to "True":
Boolean iFramesOnly = False;

static void announceStream(RTSPServer* rtspServer, ServerMediaSession* sms,
               char const* streamName, char const* inputFileName); // forward


int main(int argc, char** argv) {
  // Begin by setting up our usage environment:
  TaskScheduler* scheduler = BasicTaskScheduler::createNew();
  env = BasicUsageEnvironment::createNew(*scheduler);

  UserAuthenticationDatabase* authDB = NULL;

  // Serve regular RTSP (over a TCP connection):
  RTSPServer* rtspServer = RTSPServer::createNew(*env, 8554, authDB);

  if (rtspServer == NULL) {
    *env << "Failed to create RTSP server: " << env->getResultMsg() << "\n";
    exit(1);
  }

  char const* descriptionString = "Session streamed by \"testFFMPEGRTSPServer\"";

  {
    char const* streamName = "FFMPEGRTSPStream";
    ServerMediaSession* sms
      = ServerMediaSession::createNew(*env, streamName, streamName,
                      descriptionString);
    sms->addSubsession(FFMPEGH264StreamMediaSubsession
               ::createNew(*env, reuseFirstSource));
    rtspServer->addServerMediaSession(sms);

    announceStream(rtspServer, sms, streamName, "ffmpeg");
  }

  env->taskScheduler().doEventLoop(); // does not return
}

static void announceStream(RTSPServer* rtspServer, ServerMediaSession* sms,
               char const* streamName, char const* inputFileName) {
  UsageEnvironment& env = rtspServer->envir();

  env << "\n\"" << streamName << "\" stream, from the file \""
      << inputFileName << "\"\n";
  announceURL(rtspServer, sms);
}

FFMPEGH264StreamMediaSubsession*
  FFMPEGH264StreamMediaSubsession::createNew(UsageEnvironment& env, Boolean reuseFirstSource)
{
    return new FFMPEGH264StreamMediaSubsession(env, reuseFirstSource);
}

FFMPEGH264StreamMediaSubsession::FFMPEGH264StreamMediaSubsession(UsageEnvironment& env, Boolean reuseFirstSource) 
                : OnDemandServerMediaSubsession(env, reuseFirstSource)
{

}

FFMPEGH264StreamMediaSubsession::~FFMPEGH264StreamMediaSubsession()
{

}

FramedSource* FFMPEGH264StreamMediaSubsession::createNewStreamSource(unsigned clientSessionId,
                          unsigned& estBitrate)
{
  estBitrate = 500; // kbps, estimate

  // Create the video source:
  // Create a 'groupsock' for the input multicast group,port:
  char const* inputAddressStr = "192.168.1.100";

  NetAddressList inputAddresses(inputAddressStr);
  struct sockaddr_storage inputAddress;
  copyAddress(inputAddress, inputAddresses.firstAddress());

  Port const inputPort(8888);
  unsigned char const inputTTL = 0; // we're only reading from this mcast group

  Groupsock inputGroupsock(envir(), inputAddress, inputPort, inputTTL);

  // Then create a liveMedia 'source' object, encapsulating this groupsock:
  FramedSource* source = BasicUDPSource::createNew(envir(), &inputGroupsock);

  // Create a framer for the Video Elementary Stream:
  return H264VideoStreamFramer::createNew(envir(), source);
} 

RTPSink* FFMPEGH264StreamMediaSubsession::createNewRTPSink(Groupsock* rtpGroupsock,
                                    unsigned char rtpPayloadTypeIfDynamic, FramedSource* inputSource)
{
    return H265VideoRTPSink::createNew(envir(), rtpGroupsock, rtpPayloadTypeIfDynamic);
}


  


  I converted my USB webcam to H264 stream using the following FFMPEG command :

  


  ffmpeg -video_size 1280x720 -framerate 30 -input_format mjpeg -f v4l2 -i /dev/video0 -c:v h264_nvenc -bf 0 -g 30 -bsf:v 'filter_units=remove_types=35|38-40' -f h264 udp://192.168.1.100:8888


  


  However when I try to play it with FFPLAY using the following, I do not get any output :

  


  ffplay rtsp://192.168.1.100:8554/FFMPEGRTSPStream


  


  What am I doing wrong ?

  


• Anomalie #2025 (Nouveau) : Surlignage intempestif

  8 avril 2011, par r o m y

  Le surlignage des résultats de recherche tel qu’actuellement géré par SPIP, pose plusieurs soucis, dont des surlignements, souvent plus surprenants qu’utiles, lorsqu’on arrive sur un site après une requête en moteur de recherche Google.

  le surlignage devrait être inactif par défaut (poser la class (...)