The TikTok video maker that writes the caption too.
Paste a YouTube link or upload a long video — a podcast, interview, stream or webinar. AutoShorts finds the moments worth cutting, reframes each one to 9:16 around the speaker's face, and writes the TikTok caption to go with it.
3 free credits · No card · Nothing to cancel
The clip
The caption, written for TikTok
- Hook
- Robert Irwin reveals he was death-rolled by a 14-foot crocodile named Jimmy Fallon! 🐊
- Context
- Hear the wild story of how he got stuck under 700 pounds of pure reptile power.
- A question to answer
- What's the craziest animal encounter you've heard?
- Niche hashtags
- #RobertIrwin#CrocodileHunter#WildlifeRescue#AnimalEncounters#JimmyFallon
The workflow
One long video in, finished posts out
There is no timeline to scrub and no prompt to write. You hand over a video and get back clips that are already the right shape, the right length, and already captioned.
Bring a video you already have
A public YouTube link, or an MP4, MOV or WebM up to 300 MB on the free trial and 2.5 GB once you buy credits.
It reads the transcript and picks
AutoShorts transcribes the video word by word, then a language model scores the transcript for moments that stand on their own — usually 3–15 of them, each 15 to 60 seconds.
Every clip is reframed to 9:16
Faces are detected on every frame and the crop follows the one it is tracking, drifting like a tripod pan rather than snapping between people. Output keeps your source's height.
And the post copy is written
Each clip comes with a TikTok caption in the language spoken in the video, plus a separate Instagram caption and a YouTube title if you post there too.
Real posts from three different videos
Lisa Kudrow's viral take on Ross and Rachel's "break" will shock you!
Watch Diljit Dosanjh teach Jimmy Fallon a signature dance move! 🔥
Three clips AutoShorts produced, with the captions it wrote for them. The words on the video are the product's own.
The caption
Captions that read like a person wrote them
The part most clip tools leave to you. Every caption opens with the phrase someone would search for, adds a line of context, and closes with a question — a different one each time.
3–5 niche hashtags, never #fyp
Generic tags are asked for by name and excluded. What you get are topic tags someone interested in the subject would actually follow.
Written in the video's language
If the interview is in Spanish, the caption is in Spanish. It is written from the transcript, not translated from an English template.
Yours to edit before it posts
The caption is pre-filled when you post and you can rewrite any of it. There is also a copy button on every clip if you would rather paste it into the app yourself.
On-screen captions
Burn the captions into the video
Clips arrive without subtitles so you can check the cut first. Adding them is one button on any clip: pick a word-by-word animation, a font, a colour and where they sit.
This is the one thing behind the paywall: captioning a clip in place needs a credit pack. On free credits the standalone Captions tool still works.
Publishing
Connect TikTok and hit post
Connect your TikTok account once and send a finished clip straight to it. The caption comes along pre-filled, and publishing is not something you have to pay to unlock.
Uploads through TikTok's own API
Connect TikTok through the official Content Posting API and upload from AutoShorts — no downloading a file and re-uploading it on your phone.
Included on the free trial
Unlike captioning and scheduling, posting to TikTok is not gated behind a purchase. Your trial clips will carry the watermark until you buy a pack.
Or queue it for later
Scheduling spreads posts across the next few weeks in fixed per-platform windows and unlocks with any credit pack. Those windows are defaults, not a read on your audience.
Credits and limits
What a clip costs you
1 credit per clip
Counted as clips land in your dashboard, one at a time. A clip that fails to render costs nothing.
3 clips before you decide
Enough for one real video, start to finish. Credits are shared with captions and transcripts, and they do not expire.
The trial watermark
Trial clips carry a scrolling autoshorts.app band across the frame. It is gone from everything you make after your first pack.
No bulk queue
A second video waits for the first to finish. Trial uploads run to 15 minutes; buying credits raises that to 90.
FAQ
Before you paste a link
What people ask before their first upload.
What can I actually put in?
A public YouTube link, or a video file in MP4, MOV or WebM. There is no text-to-video or image-to-video here — AutoShorts works from footage you already have, which in practice means podcasts, interviews, streams, webinars and course recordings. It also needs speech: a music video gives the model nothing to read.
Can I really post to TikTok from here?
Yes. Connect your TikTok account once and clips upload through TikTok's official Content Posting API, with the caption pre-filled and editable. Posting is available on the free trial; scheduling posts for later needs a credit pack.
Where do the hashtags come from?
They are written for each clip from its own transcript — three to five topic-specific tags. Generic tags like #fyp, #viral and #foryou are excluded on purpose, because they describe nothing about the clip and compete with everything on the platform.
Do the clips come with captions on the video?
Not automatically — clips are produced first so you can check the cut. Adding captions to a clip is one click, with a choice of word-by-word animation, font, colour and position, and it unlocks with any credit pack.
How long are the clips?
Each one is chosen to run between 15 and 60 seconds, which is the range that suits TikTok best. You get roughly 3–15 clips from a typical long video, and how many you receive depends on your credit balance.
Does it work in my language?
Transcription covers around 100 languages, and the caption is written in whatever language is spoken in the video rather than translated into English. Burned-in subtitles render Latin, Cyrillic, Greek and CJK scripts.
You already filmed it. Now post it.
Paste a link and see what comes back — the clip, the caption and the hashtags, in about the time it takes to make coffee.
Make TikToks free3 credits to start · A failed clip costs nothing
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