Recherche avancée

Sur d’autres sites (8027)

• Flumotion Wins Streaming Media Europe Awards for WebM Streaming

  20 octobre 2010, par noreply@blogger.com (John Luther)

  Congratulations to our friends at Flumotion ! They picked up two Reader’s Choice Awards at the Streaming Media Europe 2010 conference in London. The company took prizes for Best Live Webcast of 2010 (for their streaming of GUADEC 2010 in WebM), and Best Webcast Platform. In addition, the Flumotion WebM Live Streaming solution was nominated for Best Streaming Innovation of 2010.

  You can read more about the awards at the Streaming Media web site.

  

• Flumotion Wins Streaming Media Europe Awards for WebM Streaming

  20 octobre 2010, par noreply@blogger.com (John Luther)

  Congratulations to our friends at Flumotion ! They picked up two Reader’s Choice Awards at the Streaming Media Europe 2010 conference in London. The company took prizes for Best Live Webcast of 2010 (for their streaming of GUADEC 2010 in WebM), and Best Webcast Platform. In addition, the Flumotion WebM Live Streaming solution was nominated for Best Streaming Innovation of 2010.

  You can read more about the awards in the Streaming Media announcement.

  

• building a voice recorder using html5 and javascript

  16 juillet 2014, par lama

  I want to build a voice recorder using HTML5 same as one found in gitHub JSSoundecorder, but what I want is for the user to be able to choose the file format before recording the voice.I can do this using ffmpeg. In other words the user must be able to select the audio format by check box (mp3,wma,pcm) and in the background code, the .wav file usually created by the program instead of displaying it, it should be converted by the format selected then displayed in the new format.this is the ffmpeg code we can use ,but I don’t know how to get the .wav audio file to convert it and show it.please if someone have ideas,or if can find demos I have been looking for weeks.this is the ffmpeg code :

     var fileName;
  
     var fileBuffer;
  
  
  
     function timeToSeconds(time) {
  
        var parts = time.split(":");
  
        return parseFloat(parts[0]) * 60 * 60 + parseFloat(parts[1]) * 60 + parseFloat(parts[2]) + parseFloat("0." + parts[3]);
  
    }
  
  
  
    // create ffmpeg worker
  
    function getFFMPEGWorker() {
  
        // regexps for extracting time from ffmpeg logs
  
        var durationRegexp = /Duration: (.*?), /
  
        var timeRegexp = /time=(.*?) /;
  
        var duration;
  
  
  
        var ffmpegWorker = new Worker('worker.js');
  
        var durationLine;
  
        ffmpegWorker.addEventListener('message', function(event) {
  
            var message = event.data;
  
            console.log(message.type);
  
            if (message.type === "ready" && window.File && window.FileList && window.FileReader) {
  
                // script loaded, hide loader
  
                $('#loading').hide();
  
            } else if (message.type == "stdout") {
  
                console.log(message.data);
  
            } else if (message.type == "stderr") {
  
                console.log(message.data);
  
                // try to extract duration
  
                if (durationRegexp.exec(message.data)) {
  
                    duration = timeToSeconds(durationRegexp.exec(message.data)[1]);
  
                }
  
                // try to extract time
  
                if (timeRegexp.exec(message.data)) {
  
                    var time = timeToSeconds(timeRegexp.exec(message.data)[1]);
  
                    if (duration) {
  
                        $("#progress").text("Progress: " + Math.floor(time / duration * 100) + "%");
  
                        $("#progress").show();
  
                    }
  
                }
  
            } else if (message.type == "done") {
  
                var code = message.data.code;
  
  
  
               console.log(message.data);
  
                var outFileNames = Object.keys(message.data.outputFiles);
  
  
  
                console.log(outFileNames);
  
                if (code == 0 && outFileNames.length) {
  
                    var outFileName = outFileNames[0];
  
  
  
                    var outFileBuffer = message.data.outputFiles[outFileName];
  
  
  
                    var src = window.URL.createObjectURL(new Blob([outFileBuffer]));
  
  
  
                    $("#downloadLink").attr('href', src);
  
                    $("#download").show();
  
                } else {
  
                    $("#error").show();
  
                }
  
                $("#converting").hide();
  
                $("#progress").hide();
  
            }
  
        }, false);
  
        return ffmpegWorker;
  
     }
  
  
  
     // create ffmpeg worker
  
     var ffmpegWorker = getFFMPEGWorker();
  
     var ffmpegRunning = false;
  
  
  
     $('#convert').click(function() {
  
        // terminate existing worker
  
        if (ffmpegRunning) {
  
            ffmpegWorker.terminate();
  
            ffmpegWorker = getFFMPEGWorker();
  
        }
  
        ffmpegRunning = true;
  
  
  
        // display converting animation
  
        $("#converting").show();
  
        $("#error").hide();
  
  
  
        // hide download div
  
        $("#download").hide();
  
  
  
        // change download file name
  
        var fileNameExt = fileName.substr(fileName.lastIndexOf('.') + 1);
  
  
  
        var outFileName = fileName.substr(0, fileName.lastIndexOf('.')) + "." + getOutFormat();
  
  
  
          $("#downloadLink").attr("download", outFileName);
  
        $("#downloadLink").text(outFileName);
  
  
  
        var arguments = [];
  
        arguments.push("-i");
  
        arguments.push(fileName);
  
  
  
        arguments.push("-b:a");
  
        arguments.push(getBitrate());
  
  
  
        switch (getOutFormat()) {
  
            case "mp3":
  
                arguments.push("-acodec");
  
                arguments.push("libmp3lame");
  
                arguments.push("out.mp3");
  
                break;
  
  
  
            case "wma":
  
                arguments.push("-acodec");
  
                arguments.push("wmav1");
  
                arguments.push("out.asf");
  
                break;
  
  
  
            case "pcm":
  
                arguments.push("-f");
  
                arguments.push("s16le");
  
                arguments.push("-acodec");
  
                arguments.push("pcm_s16le");
  
                arguments.push("out.pcm");
  
        }
  
  
  
        ffmpegWorker.postMessage({
  
  
  
            type: "command",
  
            arguments: arguments,
  
            files: [
  
                {
  
                    "name": fileName,
  
                    "buffer": fileBuffer
  
                }
  
            ]
  
  
  
        });
  
    });
  
  
  
    function getOutFormat() {
  
        return $('input[name=format]:checked').val();
  
    }
  
  
  
    function getBitrate() {
  
        return $('input[name=bitrate]:checked').val();
  
    }
  
  
  
    // disable conversion at start
  
    $('#convert').attr('disabled', 'true');
  
  
  
    function readInputFile(file) {
  
        // disable conversion for the time of file loading
  
        $('#convert').attr('disabled', 'true');
  
  
  
        // load file content
  
        var reader = new FileReader();
  
        reader.onload = function(e) {
  
            $('#convert').removeAttr('disabled');
  
            fileName = file.name;
  
          console.log(fileName);
  
            fileBuffer = e.target.result;
  
        }
  
        reader.readAsArrayBuffer(file);
  
  
  
    }
  
  
  
    // reset file selector at start
  
    function resetInputFile() {
  
        $("#inFile").wrap('<form>').closest('form').get(0).reset();
  
        $("#inFile").unwrap();
  
    }
  
    resetInputFile();
  
  
  
    function handleFileSelect(event) {
  
        var files = event.target.files; // FileList object
  
    console.log(files);
  
        // files is a FileList of File objects. display first file name
  
        file = files[0];
  
        console.log(file);
  
        if (file) {
  
            $("#drop").text("Drop file here");
  
            readInputFile(file);
  
  
  
  
  
        }
  
    }
  
  
  
  
  
    // setup input file listeners
  
  
  
    document.getElementById('inFile').addEventListener('change', handleFileSelect, false);
  
  </form>