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• Révision 19175 : Corrections CSS :

  29 mars 2012, par cedric -

  class edition sur le body toujours a la fin pour permettre d’avoir le meme selecteur css selon qu’elle est ajoutee cote serveur ou client

  meta viewport pour iTruc

  preciser des min-width sur le body pour que les iTruc ne se trompent pas au calcul de largeur de (...)

• How do i play an HLS stream when playlist.m3u8 file is constantly being updated ?

  3 janvier 2021, par Adnan Ahmed

  I am using MediaRecorder to record chunks of my live video in webm format from MediaStream and converting these chunks to .ts files on the server using ffmpeg and then updating my playlist.m3u8 file with this code :

  


  function generateM3u8Playlist(fileDataArr, playlistFp, isLive, cb) {
    var durations = fileDataArr.map(function(fd) {
        return fd.duration;
    });
    var maxT = maxOfArr(durations);

    var meta = [
        '#EXTM3U',
        '#EXT-X-VERSION:3',
        '#EXT-X-MEDIA-SEQUENCE:0',
        '#EXT-X-ALLOW-CACHE:YES',
        '#EXT-X-TARGETDURATION:' + Math.ceil(maxT),
    ];

    fileDataArr.forEach(function(fd) {
        meta.push('#EXTINF:' + fd.duration.toFixed(2) + ',');
        meta.push(fd.fileName2);
    });

    if (!isLive) {
        meta.push('#EXT-X-ENDLIST');
    }

    meta.push('');
    meta = meta.join('\n');

    fs.writeFile(playlistFp, meta, cb);
}


  


  Here fileDataArr holds information for all the chunks that have been created.

  


  After that i use this code to create a hls server :

  


  var runStreamServer = (function(streamFolder) {
    var executed = false;
    return function(streamFolder) {
        if (!executed) {
            executed = true;
            var HLSServer = require('hls-server')
            var http = require('http')

            var server = http.createServer()
            var hls = new HLSServer(server, {
                path: '/stream', // Base URI to output HLS streams
                dir: 'C:\\Users\\Work\\Desktop\\live-stream\\webcam2hls\\videos\\' + streamFolder // Directory that input files are stored
            })
            console.log("We are going to stream from folder:" + streamFolder);
            server.listen(8000);
            console.log('Server Listening on Port 8000');
        }
    };
})();


  


  The problem is that if i stop creating new chunks and then use the hls server link :
http://localhost:8000/stream/playlist.m3u8 then the video plays in VLC but if i try to play during the recording it keeps loading the file but does not play. I want it to play while its creating new chunks and updating playlist.m3u8. The quirk in generateM3u8Playlist function is that it adds '#EXT-X-ENDLIST' to the playlist file after i have stopped recording.
The software is still in production so its a bit messy code. Thank you for any answers.

  


  The client side that generates blobs is as follows :

  


  var mediaConstraints = {
            video: true,
            audio:true
        };
navigator.getUserMedia(mediaConstraints, onMediaSuccess, onMediaError);
function onMediaSuccess(stream) {
            console.log('will start capturing and sending ' + (DT / 1000) + 's videos when you press start');
            var mediaRecorder = new MediaStreamRecorder(stream);

            mediaRecorder.mimeType = 'video/webm';

            mediaRecorder.ondataavailable = function(blob) {
                var count2 = zeroPad(count, 5);
                // here count2 just creates a blob number 
                console.log('sending chunk ' + name + ' #' + count2 + '...');
                send('/chunk/' + name + '/' + count2 + (stopped ? '/finish' : ''), blob);
                ++count;
            };
        }
// Here we have the send function which sends our blob to server:
        function send(url, blob) {
            var xhr = new XMLHttpRequest();
            xhr.open('POST', url, true);

            xhr.responseType = 'text/plain';
            xhr.setRequestHeader('Content-Type', 'video/webm');
            //xhr.setRequestHeader("Content-Length", blob.length);

            xhr.onload = function(e) {
                if (this.status === 200) {
                    console.log(this.response);
                }
            };
            xhr.send(blob);
        }


  


  The code that receives the XHR request is as follows :

  


  var parts = u.split('/');
        var prefix = parts[2];
        var num = parts[3];
        var isFirst = false;
        var isLast = !!parts[4];

        if ((/^0+$/).test(num)) {
            var path = require('path');
            shell.mkdir(path.join(__dirname, 'videos', prefix));
            isFirst = true;
        }

        var fp = 'videos/' + prefix + '/' + num + '.webm';
        var msg = 'got ' + fp;
        console.log(msg);
        console.log('isFirst:%s, isLast:%s', isFirst, isLast);

        var stream = fs.createWriteStream(fp, { encoding: 'binary' });
        /*stream.on('end', function() {
            respond(res, ['text/plain', msg]);
        });*/

        //req.setEncoding('binary');

        req.pipe(stream);
        req.on('end', function() {
            respond(res, ['text/plain', msg]);

            if (!LIVE) { return; }

            var duration = 20;
            var fd = {
                fileName: num + '.webm',
                filePath: fp,
                duration: duration
            };
            var fileDataArr;
            if (isFirst) {
                fileDataArr = [];
                fileDataArrs[prefix] = fileDataArr;
            } else {
                var fileDataArr = fileDataArrs[prefix];
            }
            try {
                fileDataArr.push(fd);
            } catch (err) {
                fileDataArr = [];
                console.log(err.message);
            }
            videoUtils.computeStartTimes(fileDataArr);

            videoUtils.webm2Mpegts(fd, function(err, mpegtsFp) {
                if (err) { return console.error(err); }
                console.log('created %s', mpegtsFp);

                var playlistFp = 'videos/' + prefix + '/playlist.m3u8';

                var fileDataArr2 = (isLast ? fileDataArr : lastN(fileDataArr, PREV_ITEMS_IN_LIVE));

                var action = (isFirst ? 'created' : (isLast ? 'finished' : 'updated'));

                videoUtils.generateM3u8Playlist(fileDataArr2, playlistFp, !isLast, function(err) {
                    console.log('playlist %s %s', playlistFp, (err ? err.toString() : action));
                });
            });


            runStreamServer(prefix);
        }


  


• how to install ffmpeg in cpanel

  30 janvier 2012, par Ajay Chthri

  i'm using dedicated server(linux) so i need to install ffmpeg in cpanel so here ffmpeg i found in Main >> Software >> Install a Perl Module but i writing script in php so how can i install ffmpeg phpperl

  when i'am trying to install ffmpeg in perl module i get this response

  Checking C compiler....C compiler (/usr/bin/cc) OK (cached Tue Jan 17 19:16:31 2012)....Done
  
  CPAN fallback is disabled since /var/cpanel/conserve_memory exists, and cpanm is available.
  
  Method: Using Perl Expect, Installer: cpanm
  
  You have make /usr/bin/make
  
  Falling back to HTTP::Tiny 0.009
  
  You have /bin/tar: tar (GNU tar) 1.15.1
  
  You have /usr/bin/unzip
  
  You have Cpanel::HttpRequest 2.1
  
  Testing connection speed...(using fast method)...Done
  
  Ping:2 (ticks) Testing connection speed to cpan.knowledgematters.net using pureperl...(28800.00 bytes/s)...Done
  
  Ping:2 (ticks) Testing connection speed to cpan.develooper.com using pureperl...(22233.33 bytes/s)...Done
  
  Ping:2 (ticks) Testing connection speed to cpan.schatt.com using pureperl...(32750.00 bytes/s)...Done
  
  Ping:3 (ticks) Testing connection speed to cpan.mirror.facebook.net using pureperl...(14050.00 bytes/s)...Done
  
  Ping:2 (ticks) Testing connection speed to cpan.mirrors.hoobly.com using pureperl...(5150.00 bytes/s)...Done
  
  Five usable mirrors located
  
  Ping:0 (ticks) Testing connection speed to 208.109.109.239 using pureperl...(28950.00 bytes/s)...Done
  
  Ping:2 (ticks) Testing connection speed to 208.82.118.100 using pureperl...(19300.00 bytes/s)...Done
  
  Ping:1 (ticks) Testing connection speed to 69.50.192.73 using pureperl...(19300.00 bytes/s)...Done
  
  Three usable fallback mirrors located
  
  Mirror Check passed for cpan.schatt.com (/index.html)
  
  Searching on cpanmetadb ...
  
  Fetching http://cpanmetadb.cpanel.net/v1.0/package/Video::FFmpeg?cpanel_version=11.30.5.6&cpanel_tier=release (connected:0).......(request attempt 1/12)...Using dns cache file /root/.HttpRequest/cpanmetadb.cpanel.net......searching for mirrors (mirror search attempt 1/3)......5 usable mirrors located. (less then expected)......mirror search success......connecting to 208.74.123.82...@208.74.123.82......connected......receiving...100%......request success......Done
  
  Searching Video::FFmpeg on cpanmetadb (http://cpanmetadb.cpanel.net/v1.0/package/Video::FFmpeg?cpanel_version=11.30.5.6&cpanel_tier=release) ...
  
  Fetching http://cpanmetadb.cpanel.net/v1.0/package/Video::FFmpeg?cpanel_version=11.30.5.6&cpanel_tier=release (connected:1).......(request attempt 1/12)...@208.74.123.82......connected......receiving...100%......request success......Done
  
  Source: fastest CPAN mirror ... --> Working on Video::FFmpeg
  
  Fetching http://cpan.schatt.com//authors/id/R/RA/RANDOMMAN/Video-FFmpeg-0.47.tar.gz ... Fetching http://cpan.schatt.com/authors/id/R/RA/RANDOMMAN/Video-FFmpeg-0.47.tar.gz (connected:1).......(request attempt 1/12)...Resolving cpan.schatt.com...(resolve attempt 1/65)......connecting to 66.249.128.125...@66.249.128.125......connected......receiving...25%...50%...75%...100%......request success......Done
  
  OK
  
  Unpacking Video-FFmpeg-0.47.tar.gz
  
  Video-FFmpeg-0.47/
  
  Video-FFmpeg-0.47/Changes
  
  Video-FFmpeg-0.47/FFmpeg.xs
  
  Video-FFmpeg-0.47/MANIFEST
  
  Video-FFmpeg-0.47/META.yml
  
  Video-FFmpeg-0.47/Makefile.PL
  
  Video-FFmpeg-0.47/README
  
  Video-FFmpeg-0.47/lib/
  
  Video-FFmpeg-0.47/lib/Video/
  
  Video-FFmpeg-0.47/lib/Video/FFmpeg/
  
  Video-FFmpeg-0.47/lib/Video/FFmpeg/AVFormat.pm
  
  Video-FFmpeg-0.47/lib/Video/FFmpeg/AVStream/
  
  Video-FFmpeg-0.47/lib/Video/FFmpeg/AVStream/Audio.pm
  
  Video-FFmpeg-0.47/lib/Video/FFmpeg/AVStream/Subtitle.pm
  
  Video-FFmpeg-0.47/lib/Video/FFmpeg/AVStream/Video.pm
  
  Video-FFmpeg-0.47/lib/Video/FFmpeg/AVStream.pm
  
  Video-FFmpeg-0.47/lib/Video/FFmpeg.pm
  
  Video-FFmpeg-0.47/ppport.h
  
  Video-FFmpeg-0.47/t/
  
  Video-FFmpeg-0.47/t/Video-FFmpeg.t
  
  Video-FFmpeg-0.47/test
  
  Video-FFmpeg-0.47/test.mp4
  
  Video-FFmpeg-0.47/typemap
  
  Entering Video-FFmpeg-0.47
  
  Checking configure dependencies from META.yml
  
  META.yml not found or unparsable. Fetching META.yml from search.cpan.org
  
  Fetching http://search.cpan.org/meta/Video-FFmpeg-0.47/META.yml (connected:1).......(request attempt 1/12)...Resolving search.cpan.org...(resolve attempt 1/65)......connecting to 199.15.176.161...@199.15.176.161......connected......receiving...100%......request success......Done
  
  Configuring Video-FFmpeg-0.47 ... Running Makefile.PL
  
  Perl v5.10.0 required--this is only v5.8.8, stopped at Makefile.PL line 1.
  
  BEGIN failed--compilation aborted at Makefile.PL line 1.
  
  N/A
  
  ! Configure failed for Video-FFmpeg-0.47. See /home/.cpanm/build.log for details.
  
  Perl Expect failed with non-zero exit status: 256
  
  
  
  All available perl module install methods have failed  

  guide me how can i install ffmpeg in cPanel

  Thanks for advance.