bellingcat/tiktok-timestamp
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Merge pull request #2 from Ollie-Boyd/version2

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Old tool depreciated due to changes in TikTok metadata. The tool now extracts datetime from the video ID in URL.
This commit is contained in:
Logan Williams
2021-11-22 16:27:04 +01:00
committed by GitHub
parent 5cd19239ea 0d2a4afdbb
commit aa9831e7df
2 changed files with 36 additions and 43 deletions
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6
README.md
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# tiktok-timestamp
A tiny, client side tool that retrieves the timestamp from Tiktok videos. Use it on Github Pages here: https://bellingcat.github.io/tiktok-timestamp/
A tiny, client side tool that retrieves the timestamp from Tiktok video URLs. Works with videos that have been deleted. Use a recent Chromium based browser.
Based on research by Ryan Benson https://dfir.blog/tinkering-with-tiktok-timestamps/.
Use it on Github Pages here: https://bellingcat.github.io/tiktok-timestamp/

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index.html
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<html>
<head>
<title>Tiktok date extractor</title>
<script src="https://unpkg.com/dayjs"></script>
<script src="https://unpkg.com/dayjs-plugin-utc"></script>
<script>
dayjs.extend(dayjsPluginUTC.default);
</script>
<style>
body {
margin: 1em;
font-family: "Helvetica", Arial, sans-serif;
font-size: 18px;
}
button, input {
font-size: 16px;
}
.form {
margin-bottom: 1em;
}
@@ -25,48 +17,45 @@
</head>
<body>
<script>
function getdate() {
document.getElementById("date").innerHTML = "...";
document.getElementById("label").innerHTML = "Uploaded on: ";
function getVidId() {
const tiktokUrl= document.querySelector("#url").value;
// This regex should be safe as "Only letters, numbers, underscores, or periods are allowed" in TikTok usernames.
const regex = /(?<=\/video\/)(.*?)(?=$|[^0-9])/;
const vidId = regex.exec(tiktokUrl)[0];
return vidId;
}
var url = document.getElementById("url").value;
function extractUnixTimestamp(vidId) {
// BigInt needed as we need to treat vidId as 64 bit decimal. This reduces browser support.
const asBinary = BigInt(vidId).toString(2);
const first31Chars = asBinary.slice(0, 31);
const timestamp = parseInt(first31Chars, 2);
return timestamp;
}
var headers = {
Origin: "https://www.tiktok.com",
Accept:
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"User-Agent":
"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15",
"Accept-Language": "en-us",
Connection: "keep-alive",
};
function unixTimestampToHumanDate(timestamp) {
const milliseconds = timestamp * 1000;
const dateObject = new Date(milliseconds);
const humanDateFormat = dateObject.toUTCString()+" (UTC)";
return humanDateFormat;
}
resp = fetch("https://api.allorigins.win/get?url=" + encodeURIComponent(url), {
method: "GET",
headers: headers,
})
.then(function (r) {
return r.text();
})
.then(function (text) {
text = text.replaceAll("\\", "");
var split = text.split(`"createTime":`);
split = split[1].split(`,`);
var formatted = dayjs
.utc(+split[0] * 1000)
.format("MMM D YYYY, HH:mm:ss UTC");
document.getElementById("date").innerHTML = formatted;
});
function getDate() {
const vidId = getVidId();
const unixTimestamp = extractUnixTimestamp(vidId);
const humanDateFormat = unixTimestampToHumanDate(unixTimestamp);
document.querySelector("#date").textContent = humanDateFormat;
}
</script>
<div class="form">
<label for="url">Tiktok video URL:</label>
<input type="text" id="url" name="url" />
<button onclick="getdate()">Get uploaded date</button>
<button onclick="getDate()">Get uploaded date</button>
</div>
<div class="output">
<span id="label">Uploaded on: </span>
<span id="date"></span>
</div>
<div class="output"><span id="label">Uploaded on: </span><span class="date" id="date"></span></div>
</body>
</html>
</html>