@aurora-agency/puppeteer-screen-recorder
Version:
A puppeteer Plugin that uses the native chrome devtool protocol for capturing video frame by frame. Also supports an option to follow pages that are opened by the current page object
330 lines • 26.6 kB
JavaScript
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const events_1 = require("events");
const os_1 = __importDefault(require("os"));
const path_1 = require("path");
const stream_1 = require("stream");
const fluent_ffmpeg_1 = __importStar(require("fluent-ffmpeg"));
const pageVideoStreamTypes_1 = require("./pageVideoStreamTypes");
const SUPPORTED_FILE_FORMATS = [
pageVideoStreamTypes_1.SupportedFileFormats.MP4,
pageVideoStreamTypes_1.SupportedFileFormats.AVI,
pageVideoStreamTypes_1.SupportedFileFormats.MOV,
pageVideoStreamTypes_1.SupportedFileFormats.WEBM,
];
class PageVideoStreamWriter extends events_1.EventEmitter {
constructor(destinationSource, options) {
super();
this.screenLimit = 10;
this.screenCastFrames = [];
this.duration = '00:00:00:00';
this.frameGain = 0;
this.frameLoss = 0;
this.status = pageVideoStreamTypes_1.VIDEO_WRITE_STATUS.NOT_STARTED;
this.videoMediatorStream = new stream_1.PassThrough();
this.destinationExt = null;
if (options) {
this.options = options;
}
const isWritable = this.isWritableStream(destinationSource);
this.configureFFmPegPath();
if (!isWritable && typeof destinationSource === 'string') {
this.destinationExt = this.getDestinationPathExtension(destinationSource);
}
if (this.options.rtmpUrl) {
this.configureRtmpStream(this.options.rtmpUrl);
}
else if (isWritable) {
this.configureVideoWritableStream(destinationSource);
}
else {
this.configureVideoFile(destinationSource);
}
}
get videoFrameSize() {
const { width, height } = this.options.videoFrame;
return width !== null && height !== null ? `${width}x${height}` : '100%';
}
get autopad() {
const autopad = this.options.autopad;
return !autopad ? { activation: false } : { activation: true, color: autopad.color };
}
getFfmpegPath() {
if (this.options.ffmpeg_Path)
return this.options.ffmpeg_Path;
try {
const ffmpeg = require('@ffmpeg-installer/ffmpeg');
return ffmpeg.path || null;
}
catch (_a) {
return null;
}
}
getDestinationPathExtension(destinationFile) {
const fileExtension = (0, path_1.extname)(destinationFile);
return fileExtension.includes('.')
? fileExtension.replace('.', '')
: fileExtension;
}
configureFFmPegPath() {
const ffmpegPath = this.getFfmpegPath();
if (!ffmpegPath) {
throw new Error('FFmpeg path is missing, \n Set the FFMPEG_PATH env variable');
}
(0, fluent_ffmpeg_1.setFfmpegPath)(ffmpegPath);
}
isWritableStream(destinationSource) {
return destinationSource && typeof destinationSource !== 'string';
}
configureRtmpStream(rtmpUrl) {
this.writerPromise = new Promise((resolve) => {
var _a;
const outputStream = this.getDestinationStream();
outputStream
.format('flv')
.videoCodec(this.options.videoCodec || 'libx264')
.size(this.videoFrameSize)
.aspect(this.options.aspectRatio || '4:3')
.autopad(this.autopad.activation, (_a = this.autopad) === null || _a === void 0 ? void 0 : _a.color)
.on('progress', (progress) => {
this.duration = progress.timemark;
})
.on('error', (e) => {
this.handleWriteStreamError(e.message);
resolve(false);
})
.on('stderr', (e) => {
this.handleWriteStreamError(e);
resolve(false);
})
.on('end', () => resolve(true))
.output(rtmpUrl)
.run();
});
}
configureVideoFile(destinationPath) {
const fileExt = this.destinationExt;
if (!SUPPORTED_FILE_FORMATS.includes(fileExt)) {
throw new Error('File format is not supported');
}
this.writerPromise = new Promise((resolve) => {
var _a;
const outputStream = this.getDestinationStream();
outputStream
.on('error', (e) => {
this.handleWriteStreamError(e.message);
resolve(false);
})
.on('stderr', (e) => {
this.handleWriteStreamError(e);
resolve(false);
})
.on('end', () => resolve(true));
if (fileExt === pageVideoStreamTypes_1.SupportedFileFormats.WEBM) {
outputStream
.videoCodec('libvpx-vp9')
.videoBitrate(this.options.videoBitrate || 1000, true)
.format('webm')
.outputOptions([
'-deadline', 'realtime',
'-cpu-used', '4',
`-crf`, `${(_a = this.options.videoCrf) !== null && _a !== void 0 ? _a : 32}`,
]);
}
else {
outputStream.format(fileExt);
}
outputStream.save(destinationPath);
});
}
configureVideoWritableStream(writableStream) {
var _a;
const isWebm = ((_a = this.options.videoCodec) === null || _a === void 0 ? void 0 : _a.toLowerCase().includes('vp9')) || false;
this.writerPromise = new Promise((resolve) => {
var _a;
const outputStream = this.getDestinationStream();
outputStream
.on('error', (e) => {
writableStream.emit('error', e);
resolve(false);
})
.on('stderr', (e) => {
writableStream.emit('error', { message: e });
resolve(false);
})
.on('end', () => {
writableStream.end();
resolve(true);
});
if (isWebm) {
outputStream
.format('webm')
.videoCodec('libvpx-vp9')
.videoBitrate(this.options.videoBitrate || 1000, true)
.outputOptions([
'-deadline', 'realtime',
'-cpu-used', '4',
`-crf`, `${(_a = this.options.videoCrf) !== null && _a !== void 0 ? _a : 32}`,
]);
}
else {
outputStream
.format('mp4')
.addOutputOptions('-movflags +frag_keyframe+separate_moof+omit_tfhd_offset+empty_moov');
}
outputStream.pipe(writableStream);
});
}
getOutputOption() {
var _a, _b;
const cpu = Math.max(1, os_1.default.cpus().length - 1);
const videoOutputOptions = (_a = this.options.videOutputOptions) !== null && _a !== void 0 ? _a : [];
const outputOptions = [
`-crf ${(_b = this.options.videoCrf) !== null && _b !== void 0 ? _b : 23}`,
`-preset ${this.options.videoPreset || 'ultrafast'}`,
`-pix_fmt ${this.options.videoPixelFormat || 'yuv420p'}`,
`-minrate ${this.options.videoBitrate || 1000}`,
`-maxrate ${this.options.videoBitrate || 1000}`,
'-framerate 1',
`-threads ${cpu}`,
'-loglevel error',
...videoOutputOptions,
];
return outputOptions;
}
addVideoMetadata(outputStream) {
var _a;
const metadataOptions = (_a = this.options.metadata) !== null && _a !== void 0 ? _a : [];
for (const metadata of metadataOptions) {
outputStream.outputOptions('-metadata', metadata);
}
}
getDestinationStream() {
var _a;
const outputStream = (0, fluent_ffmpeg_1.default)({
source: this.videoMediatorStream,
priority: 20,
})
.videoCodec(this.options.videoCodec || 'libx264')
.size(this.videoFrameSize)
.aspect(this.options.aspectRatio || '4:3')
.autopad(this.autopad.activation, (_a = this.autopad) === null || _a === void 0 ? void 0 : _a.color)
.inputFormat('image2pipe')
.inputFPS(this.options.fps)
.outputOptions(this.getOutputOption())
.on('progress', (progressDetails) => {
this.duration = progressDetails.timemark;
});
this.addVideoMetadata(outputStream);
if (this.options.recordDurationLimit) {
outputStream.duration(this.options.recordDurationLimit);
}
return outputStream;
}
handleWriteStreamError(errorMessage) {
this.emit('videoStreamWriterError', errorMessage);
if (this.status !== pageVideoStreamTypes_1.VIDEO_WRITE_STATUS.IN_PROGRESS &&
errorMessage.includes('pipe:0: End of file'))
return;
console.error(`Error unable to capture video stream: ${errorMessage}`);
}
findSlot(timestamp) {
if (this.screenCastFrames.length === 0)
return 0;
let i;
let frame;
for (i = this.screenCastFrames.length - 1; i >= 0; i--) {
frame = this.screenCastFrames[i];
if (timestamp > frame.timestamp)
break;
}
return i + 1;
}
insert(frame) {
if (this.screenCastFrames.length === this.screenLimit) {
const numberOfFramesToSplice = Math.floor(this.screenLimit / 2);
const framesToProcess = this.screenCastFrames.splice(0, numberOfFramesToSplice);
this.processFrameBeforeWrite(framesToProcess, this.screenCastFrames[0].timestamp);
}
const insertionIndex = this.findSlot(frame.timestamp);
if (insertionIndex === this.screenCastFrames.length) {
this.screenCastFrames.push(frame);
}
else {
this.screenCastFrames.splice(insertionIndex, 0, frame);
}
}
trimFrame(fameList, chunkEndTime) {
return fameList.map((currentFrame, index) => {
const endTime = index !== fameList.length - 1 ? fameList[index + 1].timestamp : chunkEndTime;
return Object.assign(Object.assign({}, currentFrame), { duration: endTime - currentFrame.timestamp });
});
}
processFrameBeforeWrite(frames, chunkEndTime) {
const processedFrames = this.trimFrame(frames, chunkEndTime);
processedFrames.forEach(({ blob, duration }) => {
this.write(blob, duration);
});
}
write(data, durationSeconds = 1) {
this.status = pageVideoStreamTypes_1.VIDEO_WRITE_STATUS.IN_PROGRESS;
const totalFrames = durationSeconds * this.options.fps;
const floored = Math.floor(totalFrames);
let numberOfFPS = Math.max(floored, 1);
if (floored === 0)
this.frameGain += 1 - totalFrames;
else
this.frameLoss += totalFrames - floored;
while (this.frameLoss > 1) {
this.frameLoss--;
numberOfFPS++;
}
while (this.frameGain > 1) {
this.frameGain--;
numberOfFPS--;
}
for (let i = 0; i < numberOfFPS; i++) {
this.videoMediatorStream.write(data);
}
}
drainFrames(stoppedTime) {
this.processFrameBeforeWrite(this.screenCastFrames, stoppedTime);
this.screenCastFrames = [];
}
stop(stoppedTime = Date.now() / 1000) {
if (this.status === pageVideoStreamTypes_1.VIDEO_WRITE_STATUS.COMPLETED)
return this.writerPromise;
this.drainFrames(stoppedTime);
this.videoMediatorStream.end();
this.status = pageVideoStreamTypes_1.VIDEO_WRITE_STATUS.COMPLETED;
return this.writerPromise;
}
}
exports.default = PageVideoStreamWriter;
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