Does Playing a YouTube Video Keep Slack Active? No, Here Is Why

No, playing a YouTube video does not keep Slack active. The Slack desktop app counts keyboard and mouse input anywhere on the computer: clicks, keystrokes and mouse moves in any app (Slack desktop 4.52.178 code, checked 7 Oct 2026). A video gives no input at all, so your dot turns grey 10 minutes after your last keyboard or mouse input, video or not. The same goes for a Zoom call, a video game, Spotify, or work in any other app. At most, a playing video can stop the computer from sleeping, which prevents the instant away you get when it sleeps or locks. Slack Green keeps your dot green from a server through the working hours you pick, so a video in another window or a shut laptop does not turn you away, free for 7 days with no card.

We checked the "no input" part on a Mac on October 4, 2026, by playing a YouTube video and watching what macOS counted.

What a YouTube video does on your computer, measured

macOS keeps a counter, HIDIdleTime, of how long it has been since the last keyboard, mouse or trackpad input. We played a YouTube video (Big Buck Bunny, muted after the first seconds) in a Chromium-based browser and read the counter and the power assertions every 4 seconds:

$ pmset -g assertions | grep 'pid 16513'
$ ioreg -c IOHIDSystem | awk '/HIDIdleTime/ {print $NF/1000000000; exit}'

07:17:03Z  pid 16513(Aside): NoIdleSleepAssertion named: "Playing audio"   HIDIdleTime 65970.1 s
07:17:11Z  pid 16513(Aside): NoIdleSleepAssertion named: "Playing audio"   HIDIdleTime 65978.3 s
07:17:23Z  pid 16513(Aside): NoIdleSleepAssertion named: "Playing audio"   HIDIdleTime 65990.6 s
video paused
07:17:46Z  (no assertion from the browser)                                HIDIdleTime 66013.0 s

Two things show in that output:

• • The idle counter kept rising, one second per second, while the video played. To macOS, nobody touched the computer for the whole video. Slack's away timer runs on the same kind of input, so the video did nothing for it.
• • The browser held a "Playing audio" assertion while the video ran, and dropped it when the video paused. That keeps a Mac from idle sleep. It does not count as activity. On October 2 a muted video in a visible tab of the same browser also held a "Video Wake Lock", which keeps the screen on; the details are in does playing a video keep your computer awake.

So a video can keep the machine awake, which avoids the immediate away on sleep, but Slack still sees 10 minutes with no input and turns your dot grey.

A video, a call or a game on screen is not input, so Slack sets you away 10 minutes after your last keyboard or mouse input. A server-side tool keeps your Slack dot green with no input, even with the laptop closed or the phone locked.

What counts as active on Slack

Slack's help center says you are set to away after 10 minutes of desktop inactivity, and the desktop app measures that from the computer's idle time. The full rules are in how Slack decides when you are away, and the timings per device in how long does Slack stay active.

A video playing inside Slack itself is no different. Wherever it plays, 10 minutes of watching without a click or mouse move leaves you away.

Does Slack show if you are playing video games?

No. Slack cannot see which apps you run or what is on your screen. The desktop app only knows that nobody touched the computer for a while, and coworkers see a grey dot, not a game title. Slack has no "Playing" status like Discord's. What Slack does record is covered in does Slack track mouse movement.

Does a Zoom call or YouTube keep Teams active?

A Zoom call does not keep Slack active unless you type or move the mouse; the Slack desktop app counts input anywhere on the computer, but watching and listening are not input. A Slack huddle is different, since it is activity in Slack. If you want people to know you are in a call, set a status such as 📆 In a meeting.

Microsoft Teams watches activity on the whole computer, so typing in any app keeps it green. A video with no input does not, as the idle counter above shows, so Teams also goes to Away during a long video. Details are in how long before Teams shows you as Away.

What keeps Slack active instead

Keep-awake apps and jigglers help less than people expect, as does Caffeine keep Slack active shows. Every method is compared in how to keep Slack active.

FAQ

Does Slack know I am watching YouTube?

No. Slack cannot see which apps you run. It only shows that you are away. Your employer is a different question: on a work laptop they can often see the site and the video title; see can my employer see what I watch on YouTube.

Does leaving Slack open keep me active?

No. An open window with no input counts as idle.