A teacher-voiced video solution for every question in your test book
Upload the PDF and let Visolv do the rest: it splits the questions, solves them, narrates them, renders the video and exports the results to Excel.
- Cloned voice
- Step-by-step narration
- MP4 + QR
- Answer key check
How it works
- 1
Upload the booklet
Upload the test PDF or individual question images; questions and the answer key are separated.
- 2
Choose the voice
Pick a voice cloned from your teacher's 20-second recording, or a ready-made voice.
- 3
Videos are produced
Each question is solved step by step, explained with marks on the figure and checked against the answer key.
- 4
Publish
MP4 files and permanent watch links are ready; print the QR codes in your book.
From booklet to video
Visolv reads your test booklet page by page, separates the questions and the answer key, and links each question to its topic and learning outcome in the curriculum.
A step-by-step narration script is written for each question; marks, highlights and intermediate steps appear on the question image in order. The narration is read in your teacher's voice.
What you receive
For every question:
- An interactive solution in the browser (step forward, back, full screen)
- A downloadable MP4 video
- A permanent watch link you can print in the book (for QR codes)
- An Excel sheet per test or folder: question no., topic, outcome, answer, watch and download links
Quality check
Every solved answer is compared with the booklet's answer key. Mismatches land on your review list before anything is published, so printing errors in the key are caught too.
Capacity
More than 400 questions can be processed a day. A 40-question test is usually ready in 2–3 hours. For large publishing plans we set the delivery schedule together.
More in the same panel
Frequently asked questions
Are questions with figures and graphs solved too?
Yes. Geometry figures, graphs and tables are explained with marks drawn on the question image.
Which questions are supported?
Multiple-choice questions at middle and high school level. Before starting a new subject we recommend a trial run with a sample test.
Can we publish the videos on our own site?
Yes. Every video can be downloaded as an MP4 or embedded on your site with its watch link.
How long is a video?
Usually between 40 seconds and 2 minutes, depending on the difficulty of the question.
Where are the videos hosted?
Videos are hosted on Visolv's content delivery network; every question gets a permanent watch link and QR. You can also download the MP4 and publish it on your own platform.
How soon is a whole book ready?
It depends on question count and queue load; books with hundreds of questions are usually completed the same day. The exact delivery date is stated in the quote.
Are geometry questions with figures explained too?
Yes. The figure is drawn on screen and explained step by step with sides and angles marked.
Whose voice narrates the videos?
A teacher's voice is prepared from a clean 15–30 second recording you upload in the panel. If you don't upload one, Visolv's ready-made teacher voice is used.
Which files can I upload?
Test booklet PDFs with a text layer, single question images (JPG, PNG) and exam papers as PDFs or phone photos. Scanned, image-only test PDFs can't be split question by question.
What if the answer key is wrong?
Every solution is compared with the answer key in the booklet. Mismatched questions go to a review list; you choose the correct option and the video follows it.
Where is our data kept?
Files and results are kept private to your institution and never shared with other institutions. Details are in our privacy and data protection notices.
We solve.
Whatever the problem in education: we grade the exam, explain what was missed and prepare the next one. Start your first job free and see the result yourself.