WebCodecs API: Zero-Latency H.264 Browser Video Decoding
Bypass HTML5 video tag buffering and decode raw RTSP NAL units directly onto WebGL canvases using WebCodecs.
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#1VideoDecoder Setup in JavaScript
Initialize VideoDecoder with hardware acceleration:
const canvas = document.getElementById('render-canvas');
const ctx = canvas.getContext('2d');
const decoder = new VideoDecoder({
output: (videoFrame) => {
ctx.drawImage(videoFrame, 0, 0, canvas.width, canvas.height);
videoFrame.close();
},
error: (e) => console.error('VideoDecoder Error:', e)
});
decoder.configure({
codec: 'avc1.64001f', // H.264 High Profile
hardwareAcceleration: 'prefer-hardware'
});Ready to test your live RTSP video stream?
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