In short
YouTube lets you place ads in the middle of a video (mid-rolls) only on videos that are 8 minutes or longer. Shorter videos keep ads before and after the video. Stretching a video to reach the threshold is rarely worth it: if viewers leave early, mid-roll slots barely work, and retention and recommendations suffer.
What the 8-minute threshold is#
Under YouTube’s rules, ad slots inside a video are available when the video is 8 minutes or longer. The threshold applies to the length of the video itself: 7:59 is not enough, 8:00 is.
The threshold used to be higher, at 10 minutes. YouTube lowered it to 8 minutes in 2020, which is why older articles and videos still mention “mid-rolls only from 10 minutes”. Go by the current help page.
Video length
What videos under 8 minutes still get#
A short video is not left without ads. If monetization is on, it can show:
- ads before the video (pre-roll);
- ads after the video (post-roll);
- other formats YouTube shows around the video.
The only thing you cannot do is place slots inside. The ad breaks editor has nothing to configure for such a video, so the button may not appear at all. Other reasons the editor can be missing are covered in “No ad breaks button in YouTube Studio”.
Shorts are monetized under a separate model and have no mid-roll ads at all.
Should you stretch a video to 8 minutes?#
The temptation is clear: add a minute of intro and mid-roll slots appear. But what matters is how many viewers actually reach the slot. A mid-roll is shown only to those who watched up to it. If half the audience leaves at minute three, a slot at minute six reaches only a fraction of them.
A stretched video also holds attention worse, and retention affects how often YouTube recommends it. You can easily lose more than one or two slots would bring.
A sensible approach:
- If the material fills 8+ minutes, make the full version and place slots at natural pauses.
- If the topic is short, keep the video short. Pre-rolls and post-rolls work without mid-rolls.
- If the video is just under the threshold, check whether something useful was cut in the edit: an example, a conclusion, an answer to a common question. Add substance, not padding.
How many slots once you pass the threshold#
An 8–10 minute video usually needs one or two mid-roll slots. The longer the video, the more natural transitions it has and the more options you get. Frequency is your editorial call; see how to choose mid-roll frequency. For videos of an hour or more there is a separate guide: ad breaks in long videos.
A slot does not guarantee an ad: YouTube decides at playback time. More in why an ad slot is not a guarantee.
How Monvilo handles it#
Monvilo works with videos of 8 minutes or longer. In the dashboard’s Videos tab, the “No slots” filter shows exactly those videos that have no mid-rolls yet. The queue skips shorter videos on its own.
For each video, the extension analyzes the audio in your browser, finds speech pauses and picks slots for the chosen frequency. A 9-minute video gets one or two slots in pauses, not a point at exactly 4:30 in the middle of a sentence.
Frequently asked questions#
Does the threshold include the intro and end screen?
Yes, the full length of the uploaded video counts. But do not add empty credits just to qualify: viewers leave, and slots near the end go unseen.
If I trim a video to 7 minutes, will the slots disappear?
Slots inside a video are available only from 8 minutes. Once a video is shorter than the threshold, it has no mid-roll ads.
Does the threshold apply to live streams?
Live streams have their own ad settings during the broadcast. The 8-minute rule is about ad slots in uploaded videos and recordings.
Sources#
Checked October 25, 2026: mid-roll ads in long videos, Shorts monetization. The pause detection description matches Monvilo 2.25.0; the panel screenshot is Monvilo 2.22.2 on a demo video. Advice on video length is our practical guidance, not a YouTube rule.