Download Videos from https://plus.gopro.com/media-library/

gopro-media-download.js

console.error("WARNING: you must check browser download status for failed downloads!");

// time to wait before starting download in ms, you can change it during the download and changes will take effect
var TIMEOUT_WAIT_DOWNLOAD_VIDEO = 2 * 60 * 1000;
var TIMEOUT_WAIT_DOWNLOAD_PHOTO = 10 * 1000;

// if you want to download only selected files change it to const DOWNLOAD_ONLY = ["GX010709.MP4", "GX010710.MP4"];
const DOWNLOAD_ONLY = [];

// time to wait for popup initialization (load available download options), increase if it takes more
var TIMEOUT_WAIT_POPUP = 3000;

(function() {
	var stats = null;
	var stopped = false;

	function click(item) {
		const event = document.createEvent ('MouseEvents');
		event.initEvent ("click", true, true);
		item.dispatchEvent(event);
	}

	function xpath(context, query) {
		return document.evaluate(query, context, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
	}

	function startDownload(item) {
		// open menu
		click(xpath(item.parentElement, "div[contains(@class, 'dropdown')]/button"));
		setTimeout(function() {
			// find download button, wait for it if necessary
			if (stopped) {
				console.log(new Date().toISOString(), "Explicitly stopped");
				return;
			}
			const fullLength = xpath(item.parentElement, "div[@class='dropdown open']//a[contains(@id,' Original quality - Full length')]");
			const originalQuality = xpath(item.parentElement, "div[@class='dropdown open']//a[contains(@id, 'Original quality')]");
			const singleMedia = xpath(item.parentElement, "div[@class='dropdown open']//li[@class='download-menu-item']/a[contains(@id, 'download-single-media')]");
			const download = fullLength || originalQuality || singleMedia;
			if (download) {
				click(download);
				// deselect video:
				click(item);
				// continue with the rest of the videos:
				setTimeout(() => startAll(), isPhoto(getFilename(item)) ? TIMEOUT_WAIT_DOWNLOAD_PHOTO : TIMEOUT_WAIT_DOWNLOAD_VIDEO);
				return;
			}
			console.log(new Date().toISOString(), "Can't download ", getFilename(item), item, ", retrying");
			startDownload(item);
		}, TIMEOUT_WAIT_POPUP);
	}

	function calculateExpected(current) {
		const expected = current.photo  * (TIMEOUT_WAIT_DOWNLOAD_PHOTO + TIMEOUT_WAIT_POPUP) + (current.edit + current.video) * (TIMEOUT_WAIT_DOWNLOAD_VIDEO + TIMEOUT_WAIT_POPUP);
		if (expected < 1000) {
			return "1 second";
		}
		if (expected < 60 * 1000) {
			return `${expected / 1000} seconds`;
		}
		if (expected < 60 * 60 * 1000) {
			return `${(expected / (60 * 1000)).toFixed(2)} minutes`;
		}
		return `${(expected / (60 * 60 * 1000)).toFixed(2)} hours`;
	}
	function isPhoto(name) {
		return name.toUpperCase().endsWith(".JPG");
	}
	function showEstimates() {
		const filenames = videos.map(a => getFilename(a));
		const all = filenames.length;
		const photo = filenames.filter(a => isPhoto(a)).length;
		const edit = filenames.filter(a => !a).length;

		const current = {
			all: all,
			photo: photo,
			edit: edit,
			video: all - photo - edit,
		};
		if (!stats) {
			stats = current;
		}
		const completed = {
			all: stats.all - current.all,
			photo: stats.photo - current.photo,
			edit: stats.edit - current.edit,
			video: stats.video - current.video,
		};
		const expected = calculateExpected(current);
		console.log(new Date().toISOString(), `More than ${expected} expected, completed: ${completed.all}/${stats.all}, photo: ${completed.photo}/${stats.photo}, edit: ${completed.edit}/${stats.edit}, video: ${completed.video}/${stats.video}, you can adjust variables TIMEOUT_WAIT_DOWNLOAD_VIDEO and TIMEOUT_WAIT_DOWNLOAD_PHOTO while script is running`);
	}
	function startAll() {
		showEstimates();
		item = videos.shift();
		if (!item) {
			console.log(new Date().toISOString(), "DONE");
			stopPrevious();
			return;
		}
		console.log(new Date().toISOString(), "Starting", getFilename(item), item);

		startDownload(item);
	}
	function stopPrevious() {
		const stopButton = xpath(document, "//button[@id='stopButton']");
		if (stopButton) {
			click(stopButton);
		}
	}
	function getFilename(item) {
		const label = xpath(item.parentElement.parentElement, "div[@class='filename-overlay']");
		if (!label) {
			// it is edit
			return "";
		}
		return label.textContent;
	}
	function videosToDownload() {
		const selected = [];
		const query = document.evaluate("//button[@class='collection-item-menu-button select-button show-button selected']", document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
		for (let i = 0, length = query.snapshotLength; i < length; ++i) {
			selected.push(query.snapshotItem(i));
		}

		if (DOWNLOAD_ONLY.length === 0) {
			return selected;
		}
		if (new Set(DOWNLOAD_ONLY).size !== DOWNLOAD_ONLY.length) {
			throw new Error("Duplicates in DOWNLOAD_ONLY");
		}

		const result = selected.filter(a => DOWNLOAD_ONLY.indexOf(getFilename(a)) !== -1);
		const filenames = result.map(a => getFilename(a));

		DOWNLOAD_ONLY.filter(a => filenames.indexOf(a) === -1).forEach(a => console.error(`Can't find ${a}`));
		DOWNLOAD_ONLY.filter(a => filenames.filter(b => b === a).length > 1).forEach(a => console.error(`More than once (${filenames.filter(b => b === a).length}): ${a}`));
		
		return result;
	}

	stopPrevious();

	const videos = videosToDownload();
	console.log(new Date().toISOString(), "Going to download: ", videos, videos.map(a => getFilename(a)));

	const stopButton = document.createElement("button");
	stopButton.innerHTML = "------~~~~~~[[[[[[ STOP DOWNLOADS ]]]]]]~~~~~~------";
	stopButton.id = "stopButton";
	stopButton.style.position = "fixed";
	stopButton.style.top = 0;
	stopButton.style.zIndex = 1016;
	stopButton.addEventListener("click", () => {
		stopped = true;
		stopButton.remove();
		console.error("WARNING: you must check browser download status for failed downloads!");
	}, false);
	document.body.appendChild(stopButton);

	startAll();
})();