Cut on full sentences
Every clip starts at the beginning of a sentence and ends after the payoff: 15 to 90 seconds, never cut in the middle of a word.
YouTube to Shorts
Turn a YouTube video into Shorts, automatically
Paste a link. The AI finds the best moments of your long video, cuts them on full sentences, reframes them to vertical and adds subtitles. Your Shorts are ready to post.
- Podcasts, interviews, live streams
- 5 to 10 clips per video
- Vertical 9:16 + subtitles
Why flysub
Shorts that make sense on their own
A clip is only worth posting if it holds up without the rest of the video. That is what the AI is built for.
No dead air at the start
The first seconds decide whether people keep watching: a clip that would open on silence starts at the next sentence instead.
Reframed to vertical
Automatic 9:16 framing, a split screen when two people share the shot, or the full frame over a blurred backdrop.
Subtitles included
Word-level subtitles in 10 animated styles, editable word by word before you export.
A second AI check
Each suggested clip goes through a second AI pass before it reaches you, so you start from the strongest moments.
Long videos welcome
Podcasts, webinars, live replays: import videos up to 3 hours long, from a YouTube link or a file upload.
How it works
From a link to your Shorts in three steps
Paste the link
Copy the URL of your YouTube video, or upload the file, and pick the spoken language.
Let the AI cut
flysub transcribes the video, finds the best moments and suggests 5 to 10 clips, each with its hook.
Tweak and export
Adjust where a clip starts or ends, pick a subtitle style and export in MP4. Exports are unlimited.
YouTube to Shorts questions
How do I turn a YouTube video into Shorts?
Paste the YouTube link into flysub, choose the spoken language and start the analysis. The AI suggests 5 to 10 vertical clips of 15 to 90 seconds with subtitles. Adjust them if you want, then export them as MP4, ready for YouTube Shorts, TikTok or Instagram Reels.
How many minutes can I clip?
60 minutes to try for free (exports with a watermark), then 180 minutes per month on Creator, 480 on Pro and 900 on Studio. One minute of imported video = one minute used, whatever the number of clips. Need more? Top up 180 min (€19) or 600 min (€49), with no expiry date.
How long can the source video be?
Up to 3 hours, whether you paste a YouTube link or upload the file.
Does it work for podcasts and interviews?
Yes, they are the best sources: long conversations are full of moments that stand on their own. When two people share the frame, flysub can stack them in a vertical split screen.
Which languages are supported?
Eight languages: English, French, Spanish, Portuguese, German, Italian, Dutch and Arabic, plus automatic detection. The language you pick is enforced at transcription for maximum reliability.
Is there a watermark?
Only on the free trial. Every paid plan exports without a watermark.
Go further
60 free minutes
Ready to turn your next video into Shorts?
Paste a link and get your first clips. No credit card.
Start for free