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March 14, 2021 19:09
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OBS-Studio Audio Visualizer. Add --enable-media-stream to Linux Browser command line arguments.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Visualizer</title> | |
| <style type="text/css"> | |
| html, body { | |
| height: 100%; | |
| margin: 0; | |
| padding: 0; | |
| overflow: hidden; | |
| } | |
| #visualizer { | |
| width: 100%; | |
| height: 100%; | |
| display: block; | |
| opacity: 1.00; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="debug"></div> | |
| <div id="visualizer"></div> | |
| <script type="text/javascript"> | |
| let debug = document.getElementById('debug') | |
| navigator.getUserMedia = navigator.getUserMedia | |
| let acx, canvas, ctx, analyzer, liveFreqData | |
| let visualizerDiv = document.getElementById('visualizer') | |
| function log10 (num) { | |
| return Math.log(num) / Math.LN10 | |
| } | |
| function initializeVisualizer () { | |
| acx = new AudioContext() | |
| canvas = document.createElement('canvas') | |
| ctx = canvas.getContext('2d') | |
| visualizerDiv.appendChild(canvas) | |
| analyzer = acx.createAnalyser() | |
| analyzer.fftSize = 2048 | |
| analyzer.smoothingTimeConstant = 0.6 | |
| liveFreqData = new Float32Array(analyzer.frequencyBinCount) | |
| } | |
| function update () { | |
| canvas.width = visualizerDiv.offsetWidth - 50 | |
| canvas.height = visualizerDiv.offsetHeight | |
| ctx.clearRect(0, 0, canvas.width, canvas.height) | |
| window.requestAnimationFrame(update.bind(this), canvas) | |
| analyzer.getFloatFrequencyData(liveFreqData) | |
| let widthScale = canvas.width / 2.5 | |
| for (let i = 0; i < liveFreqData.length; i++) { | |
| // let freq = i*acx.sampleRate/analyzer.fftSize | |
| let x = Math.floor(log10((i + 2) / 2) * widthScale | 0) | |
| let dw = Math.ceil(log10((i + 3) / 2) * widthScale - log10((i + 2) / 2) * widthScale) | |
| let magnitude = Math.min(Math.max((liveFreqData[i] - analyzer.minDecibels) / 95, 0), 1) | |
| // ctx.fillStyle = 'hsl('+Math.min(Math.floor((i/(liveFreqData.length*0.7))*360), 359)+', 100%, '+Math.floor(magnitude*100-10)+'%)' | |
| ctx.fillStyle = 'hsl(' + (Math.floor((i / liveFreqData.length) * 20) + 35) + ', 100%, ' + Math.max(magnitude * 100 + 0, 0) + '%)' | |
| ctx.fillRect(x, canvas.height, dw, -magnitude * canvas.height | 0) | |
| // PR hue: 38 | |
| } | |
| } | |
| initializeVisualizer() | |
| if (navigator.getUserMedia) { | |
| navigator.getUserMedia({ audio: { | |
| autoGainControl: false, | |
| channelCount: 2, | |
| echoCancellation: false, | |
| latency: 0, | |
| noiseSuppression: false, | |
| sampleRate: 48000, | |
| sampleSize: 16, | |
| volume: 1.0 | |
| } }, function (stream) { | |
| var source = acx.createMediaStreamSource(stream) | |
| source.connect(analyzer) | |
| update() | |
| debug.innerHTML = "" | |
| }, function (err) { | |
| debug.innerHTML += "The following error occurred: " + err.name + "<br/>" | |
| }); | |
| } else { | |
| debug.innerHTML += "getUserMedia not supported" + "<br/>" | |
| } | |
| </script> | |
| </body> | |
| </html> |
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If I use your script, ill always get:
NotFoundErrororOverconstrainedErroreven if I specify with the deviceId, do u know some workaround for it?codepen exampe starts at line 72