Generate Instagram Reels from long videos with AI
Paste a YouTube link. FastClip's AI finds the best moments, cuts them into vertical 9:16 clips with animated captions, and hands you ready-to-post Instagram Reels — in under a minute. No editing app, no manual trimming, no credit card to start.
Why creators use FastClip for Reels
Vertical 9:16 reframe, no black bars
Instagram Reels requires a 9:16 vertical frame, but most long-form content is filmed in landscape. FastClip reframes the video automatically, cropping to vertical and centering on the main subject, so your Reel fills the screen edge to edge. No letterboxing, no awkward padding, no manual crop.
Animated captions that hold attention
Reels get scrolled past in a fraction of a second — a caption on screen is what makes someone stop. FastClip adds animated karaoke captions to every clip, transcribed word-by-word from the audio. They highlight as the speaker talks, in the style your audience expects. You can edit or switch styles in the browser before you download.
AI picks the moments worth sharing
A one-hour video might have two great Reels in it. FastClip's AI reads the transcript and finds the moments with a strong hook, a clear point, or a natural break — and clips them for you. You get up to 10 Reels per video, each one a self-contained moment your followers can watch without any context from the original.
How to make Reels from long videos
Three real steps from YouTube video to ready-to-post Instagram Reel.
Paste your YouTube link
Drop the URL of any public YouTube video into FastClip — a podcast, a vlog, an interview, a tutorial. The AI processes the audio, reads the transcript, and identifies the moments that work as standalone Reels. No upload, no waiting for a file to transfer, just a link.
Get up to 10 vertical clips with captions
In under a minute, FastClip returns up to 10 clips already cropped to 9:16 and captioned with animated text synced to the speaker's voice. Open any clip in the browser editor to adjust the caption style, fix a word, trim the ends, or reposition the text — without downloading anything yet.
Download 1080p and post to Instagram
When a clip looks right, export it as a 1080p 9:16 MP4. The file is ready to upload to Instagram Reels exactly as it is — the right format, the right resolution, captions already burned in. No conversion step, no extra app, no re-export from a phone.
Why FastClip instead of doing it manually
Making Reels by hand takes 30–60 minutes per clip. Here is what FastClip removes from that process.
No scrubbing a one-hour timeline
Finding the right 30 seconds in a long video by hand means watching and rewinding until you find it. FastClip's AI reads the whole transcript and surfaces the clips worth sharing — so you review what it found instead of hunting for it yourself.
No separate captioning app
Tools like AI subtitle generators exist because captions are usually a second step after clipping. FastClip handles both in a single pass — the captions are already on the clip when you open the editor, timed to the audio, in your language.
No re-encoding to fit Instagram's specs
Instagram Reels wants 9:16, 1080×1920, H.264. FastClip exports exactly that. You don't need to run a conversion in Handbrake or CapCut before posting — the file is Instagram-ready when you download it.
Frequently asked questions
Can I use FastClip to make Instagram Reels from YouTube videos?
Yes. Paste any public YouTube link and FastClip's AI finds the best moments, cuts them into vertical 9:16 clips, and adds animated captions — all ready to post as Instagram Reels. The whole process takes under a minute. You download the clips as 1080p MP4 files and upload them directly to Instagram.
Does FastClip reframe horizontal video to vertical 9:16 for Reels?
Yes. FastClip automatically crops and reframes the video to the 9:16 vertical aspect ratio that Instagram Reels requires. The framing is centered on the main subject, so the clip fills the screen without black bars or letterboxing.
What caption styles are available for Instagram Reels?
FastClip includes animated karaoke caption styles that work well on Instagram: a bold word-pop style, a clean minimal look, and a punchy high-contrast style. Captions highlight word-by-word in time with the speaker. You can switch styles per clip in the browser editor before downloading.
Is FastClip free for making Reels?
Yes. You can start for free without a credit card — one video and up to 5 downloads to try the full flow, captions and all. The Pro plan at $100/month unlocks unlimited videos and downloads. There are no hidden fees and you can cancel anytime.
More ways to use FastClip
Reels is one destination. FastClip also clips for TikTok, YouTube Shorts, and podcast audiograms. Or explore by use case and AI video clipping.
Your next Reel is already in your long video
Paste a YouTube link and FastClip hands you up to 10 vertical 9:16 clips with animated captions in under a minute — cropped, captioned, and export-ready at 1080p. Start free today, no credit card required.