Recherche avancée

Sur d’autres sites (7795)

• Electron and ffplay / ffmpeg to watch h264

  21 novembre 2017, par Dmitry

  Is it possible to render output from ffmpeg process in Electron or Browser app ?

  I know ffmpeg was bundled to Electron package for some reason. The main goal is to get rtsp stream from LAN video source without convertion it but it will be enough for me if anyone show me basic example of getting video(and audio) from ffmpeg and render it. Thanks.

• Watch multi-stream video file while being recorded by ffmpeg

  20 janvier 2020, par Luke Gorrie

  I am using ffmpeg to record four 1080p video streams simultaneously and I would like to view these streams in real time while they are being recorded. Ideally I would like to view them from a separate machine, using some convenient Linux data sharing method like ssh/sshfs/..., but that is a nice-to-have. Is there a practical way to accomplish this ?

  The ffmpeg recording command that I currently use is like this :

  ffmpeg \
  
    -f v4l2 -i $cam0 \
  
    -f v4l2 -i $cam1 \
  
    -f v4l2 -i $cam2 \
  
    -f v4l2 -i $cam3 \
  
    -f matroska \
  
    -map 0 \
  
    -map 1 \
  
    -map 2 \
  
    -map 3 \
  
    -c copy \
  
    $output.mkv

  My problem would be solved if I could use a command like ffplay or vlc to play one or more of the video streams, always tracking close to the end of the stream, playing more as data becomes available. I haven’t found such an option though.

  One alternative might be to have the recording ffmpeg process also tile the four 1080p videos into one 4K grid and pipe that to ffplay. Then I could at least preview on the same machine that is recording. I have not been able to work out the right ffmpeg command to do the tiling though and would appreciate an example.

• 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.