QastX for TikTok: from long video to a week of TikTok clips
AI finds your strongest moments, reframes them vertical and burns in captions — ready to post on TikTok without any manual editing.
TikTok rewards accounts that post frequently with strong hooks in the first two seconds. The problem is supply: producing 5–7 TikTok clips a week from scratch is a full-time job. QastX solves the supply problem. Upload a long interview, webinar, lesson or vlog — the AI identifies the moments that work as standalone TikToks, reframes them to 9:16, and generates word-level captions. You get a stack of post-ready clips from a single source video. More content, same production time.
How QastX helps
You want to post on TikTok daily but you don't have enough raw footage for daily shoots.
Repurpose the long videos you already have — one hour of source material = a week of TikToks.
Result: Consistent daily posting without additional filming time.
Your TikTok videos don't have captions and you're losing viewers who watch on mute.
QastX adds word-level auto-captions to every clip. No typing, no alignment.
Result: Higher watch-through rates from silent viewers.
You run a content calendar for multiple creators and can't keep up with TikTok's frequency demands.
One operator processes source videos in batch. AI clips and captions each creator's content.
Result: Multi-creator TikTok pipeline without a full team of video editors.
How it works
Upload your source video
File, YouTube link or Google Drive. We fetch and process the source.
AI clips and reframes
Finds the TikTok-worthy moments, reframes to 9:16 with face tracking, adds captions.
Post to TikTok
Download your ready-to-post MP4s or queue them in your scheduler.
Tools for TikTok creators
Frequently asked questions
How short should my clips be for TikTok?
QastX targets 30–90 seconds by default, which performs well on TikTok. You can adjust the preferred clip length before exporting.
Can I customise the caption style?
Yes. Font, size, colour and position are configurable. Set it once and all exports use your brand style.
Does it work with vertical source footage?
Yes — if your source is already 9:16 we skip the reframe step and go straight to clipping and captions.
Is there a free plan?
Yes. Try the full TikTok clip workflow on the free plan before upgrading.