为 TikTok、Reels 和 YouTube Shorts 做 AI 音乐视频：格式、hook 与发布节奏
短视频平台看重开头几秒和副歌。怎样围绕 hook 剪一支竖屏 AI 音乐视频、做哪几种时长，以及一份简单的发歌周发布计划。
更新于 2026年10月3日
本文正文目前仅提供英文版。
TikTok, Instagram Reels and YouTube Shorts all play full-screen vertical video on a phone, and all of them let a viewer move on instantly. This guide covers the format, the first seconds, which lengths to make from one song, captions and a posting plan. Formats, lengths and prices below are those of HeyBop's AI music video generator; platform rules change, so check each platform's current limits before you post.
Vertical 9:16, composed for a phone
Export 9:16 at 1080×1920 — HeyBop's vertical format for TikTok, Reels and Shorts — as an MP4 (H.264); the Free plan exports 720P. If most people will see the video on a phone, make vertical its main format from the start and treat other shapes as extras, at 20 credits each. Cropping a horizontal video afterwards throws away the edges of every shot, and sometimes the part that mattered.
Compose for a small screen: one subject, close framing, strong shapes and contrast. All three platforms lay buttons and text over parts of the frame, so keep the important part of each shot toward the centre.
The first seconds
Nobody has to watch past the first second, so don't make them wait for the video to start. Open on movement, a face or the most striking image you have — not a slow intro, a title card or a black frame. A camera move from the first frame, such as a push in or a tracking shot, reads as intent.
Check the opening scene before anything else, on a phone and with the sound off. If it's the weakest shot, rewrite its prompt or regenerate it: one scene costs one clip, and the rest of the video, the cut and the sync stay as they are.
If the song itself opens slowly, save the intro for the full-length video. Short posts don't have to start at bar one: the hook video is built on the hook, and the teaser is the strongest 15 seconds of the chorus.
Build around the chorus or hook
The hook is the part people remember, so short cuts should be built on it. HeyBop's first step finds the sections and where the hook hits, and the edit gives the chorus bigger, faster shots. The lengths to make from one song:
| Length | Use it for | Credits |
|---|---|---|
| 15-second hook teaser | A teaser exported from existing generated scenes | Free export; scene generation is paid |
| 12-second hook video | The hook on its own | 150 |
| 30-second video | A complete short post | 330; credits purchased before generation |
| 1-minute short | A longer post, where the platform allows it | 630 |
Each paid length costs a 10-credit storyboard, its clips at 60 credits per 6-second clip (40 on Lite) and a 20-credit render; the hook video, for example, is 10 + 2 × 60 + 20. How credits work explains the rest.
Make the 12-second hook video first. It's the cheapest one-click length, AI handles the shots and edit for you, and it shows whether a look suits the song before you spend on anything longer. If it works, make the 30-second video (automatically cut to the beat) in the same look; if not, try another of the 12 looks. See current pricing for membership allowances.
Captions
Turn on lyric captions: they're timed to the vocals and come in several caption styles. Captions let people follow the song with the sound off, and they carry the words when the mix is busy. Pick a style that suits the look, read the captions through once, and preview the post on your phone to check nothing important sits under the platform's buttons.
A release-week posting plan
One song can carry a week of posts if each post is a different cut. Make them before release week starts: a hook video takes minutes, but you'll want time to fix a scene or two, and a full-length video takes longer. A simple plan:
- Before release: the teaser. Generate the source video first, then post its free 15-second hook teaser, or make the paid 12-second hook video a few days out, so the hook is familiar by release day.
- Release day: the hook video. Post the 30-second video, or the 12-second hook, with a clear pointer to where the full song lives.
- After release: alternates. Make new cuts rather than reposting: a different look, a 1-minute short, a version with Sing along performance shots lip-synced to the vocals, or 1:1 and 4:5 cuts for feeds at 20 credits per extra format.
- The full video. If there's a full-length version for YouTube, the short cuts can point people to it — see the YouTube guide.
HeyBop's public share pages and artist pages, both with embeds, are another place to send people. Paid subscriptions include commercial use — release it, post it, run ads with it — and export 1080P without a watermark. Sign up and get 150 credits. Script generation is free (0 credits). Review your script before creating 3 storyboard images. Images and videos use credits. One-time short video: USD 4.99 once · 300 credits. 15s standard video with a watermark. Personal use. First video only; no auto-renewal. Release-ready video: USD 9.99 once · 600 credits. Turn your song into a 30-second music video in Standard quality. Ready to share, watermark-free, with commercial rights for this project. 600 credits included. No subscription or auto-renewal. Add credits to extend the same video and keep its export rights. Pay USD 5.00 to upgrade your short video: 300 extra credits and watermark-free commercial export for the same project. Membership: USD 7.99/week · 600 credits; USD 29.99/month · 2,600 credits. ≈ USD 6.92/week · save 13%. Weekly equivalent based on 12 months / 52 weeks. Billed monthly. Watermark-free commercial exports. Credits arrive on each paid renewal. Weekly or monthly auto-renewal. Cancel anytime. Completed licensed works keep their rights. Existing subscriptions keep their terms. Extra generation credits: USD 4.99 once · 300 credits; USD 15.99 once · 1,000 credits; USD 44.99 once · 3,000 credits. Credits never expire. Top-ups pay for generation; they do not unlock watermark-free or commercial exports. No new annual plans. Standard quality, one song and up to one singing shot. Extra attempts and higher quality use more credits; review the quote before generating. Other Free-account exports, including videos made with legacy trial balances, are for personal, non-commercial use and carry a watermark. Either way, you need the rights to the song.
Mistakes to avoid
- Cropping a 16:9 video to vertical instead of making 9:16 the main format.
- Opening on the intro when the hook arrives much later.
- Posting the same cut every day; a new look or length is a new post.
- Skipping captions on a song whose words matter.
- Promoting a release with ordinary personal-use Free-account exports, which are for personal, non-commercial use.
The step-by-step guide walks through making the video itself.
常见问题
What aspect ratio should a music video for TikTok, Reels and Shorts be?+
Vertical 9:16. HeyBop exports it at 1080×1920 as an MP4 (H.264) on paid plans, and at 720P on the Free plan. Upload limits change, so check each platform's current limits before you post.
How long should a short-form music video be?+
Long enough to land the hook. HeyBop's one-click lengths are a 12-second hook video, a 30-second video and a 1-minute short, and a 15-second hook teaser can be exported free from existing generated scenes; start short and add longer cuts as alternates. Maximum lengths differ by platform and change, so check each one's current limits.
How much does a 12-second hook video cost on HeyBop?+
150 credits (about $1.50) on Standard: two 6-second clips at 60 credits, plus 10 for the storyboard and 20 for the render. On Lite it's 110. A 15-second hook teaser export reuses existing generated scenes at no extra render charge; it does not generate new scenes for free. Every generation price is shown before you click.
Can I use a HeyBop video to promote my release?+
Paid subscriptions include commercial use, and the complete one-time purchase or trial upgrade licenses its project. Other Free-account exports are personal, non-commercial use. You need the rights to the song you upload.