Onutro — The outro: the closing 5-20 seconds of a YouTube | onutro.com
A spoken close holds about 2.2-2.5 words per second, and a music tail needs a 2-4 second fade — time both to the final frame and the outro ends clean.
Budget the script in words. At a speaking rate of 130-150 words per minute, a 30-second call to action holds about 65-75 words. Scale that to the outro you actually have: a 15-second close carries roughly 33-37 words of comfortable, unhurried speech.
Order the script ask-first. The request — subscribe, watch the next video, open the playlist — belongs in the first five seconds, while the end-screen elements are appearing. The sign-off pleasantry comes after, riding the music tail out.
Build the tail with the fade in mind. A 10-second music tail with a 3-second fade leaves 7 seconds at full level, enough to sit under the voice before the level falls. A fade under 2 seconds sounds abrupt — a fault, not a style.
On narrow screens, swipe or scroll the plate sideways.
Land the fade on the last frame. Silence before the cut leaves the end screen hanging in dead air; audio past the cut ends the upload with an audible chop. Nudge the fade's end point, not its length, until both meet at zero.
Know what the close weighs. A 15-second 1080p outro encoded at 8-12 Mbps is about 15-23 MB of video file, and the same 15 seconds is 450 frames at 30 fps or 900 at 60 fps. Duration is a creative choice; size and render load are arithmetic.
For placing the clickable elements this soundtrack accompanies, see /youtube-end-screen-setup; for picking the outro's length, see /outro-length-guide.
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