canvas-to-video
Version:
49 lines (43 loc) • 4.57 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _default = function _default(canvas, _ref) {
var timeslice = _ref.timeslice,
duration = _ref.duration,
_ref$mimeType = _ref.mimeType,
mimeType = _ref$mimeType === void 0 ? 'video/webm' : _ref$mimeType,
_ref$audioBitsPerSeco = _ref.audioBitsPerSecond,
audioBitsPerSecond = _ref$audioBitsPerSeco === void 0 ? 0 : _ref$audioBitsPerSeco,
_ref$videoBitsPerSeco = _ref.videoBitsPerSecond,
videoBitsPerSecond = _ref$videoBitsPerSeco === void 0 ? 25000000 : _ref$videoBitsPerSeco;
return new Promise(function (resolve, reject) {
try {
var stream = canvas.captureStream();
var blobs = [];
var recorder = new MediaRecorder(stream, {
mimeType: mimeType,
audioBitsPerSecond: audioBitsPerSecond,
videoBitsPerSecond: videoBitsPerSecond
});
recorder.ondataavailable = function (event) {
if (event.data && event.data.size > 0) {
blobs.push(event.data);
}
if (blobs.length === duration / timeslice) {
stream.getTracks()[0].stop();
recorder.stop();
resolve(new Blob(blobs, {
type: mimeType
}));
}
};
recorder.start(timeslice);
} catch (e) {
reject(e);
}
});
};
exports["default"] = _default;
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