录制

2024年03月12日

柏拉文

越努力，越幸运

一、录制 Canvas

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const recordedBlobs = [];
const canvas = document.getElementById('canvas');

function draw(){
    ……
}

function recorder(){
    const canvasStream = canvas.captureStream(30);
    const mediaRecorder = new MediaRecorder(canvasStream, {
        mimeType: "video/webm",
    });
    mediaRecorder.ondataavailable = (e) => recordedBlobs.push(e.data);
    mediaRecorder.onstop = () => {
    const completeBlob = new Blob(recordedBlobs, { type: "video/webm" });
        download(completeBlob);
    };
}