QastX for teachers: turn recorded lessons into bite-sized educational videos
AI clips the best teaching moments from your lesson recordings and adds accurate subtitles — ready for YouTube Shorts, TikTok and every short-form feed.
Teachers who share short educational videos grow their audience, build authority and reach students who would never find a 90-minute lecture. The barrier is production time — clipping and subtitling a lesson manually takes longer than recording it. QastX removes that barrier. Upload your lesson recording; the AI scans for the moments where you explain a concept clearly, extracts them as standalone short clips, and adds word-accurate subtitles. Share on YouTube Shorts, TikTok or any platform your students use. Teach more people without filming more content.
How QastX helps
You have recorded full lessons but students don't watch them because they're too long.
Break each lesson into 2–5 minute clips covering one concept at a time.
Result: Higher student engagement and watch-through rates on your learning content.
You want to grow an audience on short-form platforms but producing video content feels overwhelming.
Your existing lesson recordings are the raw material. QastX does the clipping and subtitling.
Result: Regular educational short-form posts without any additional recording time.
Your students are non-native speakers and need subtitles to follow along.
QastX generates accurate word-level subtitles in the spoken language and optionally translates them.
Result: Accessible learning content for international and ESL students.
How it works
Upload your lesson
Drop the recording file or paste a YouTube link.
AI clips the key moments
Finds the clearest explanations and concept introductions, adds subtitles.
Share with students
Post the clips on YouTube Shorts, TikTok or embed them in your course.
Tools for teachers and educators
Frequently asked questions
How accurate are the subtitles for technical subjects?
Very good for most subjects. You can review and edit any subtitle before exporting.
Can I use the clips in my LMS or course platform?
Yes. Clips export as standard MP4 files — embed them anywhere.
What if my lesson is mostly slides with voiceover?
QastX works well with screen-recording and presentation videos too. The AI focuses on speech content for clipping.
Is there a free plan?
Yes. Process a real lesson for free to test the quality.
Reach more students with short educational videos from your existing content.
Free plan, no credit card. Start with one lesson.
Clip my lesson