Turn a Checked Exam Question Into an Explainer Video

Give a difficult question its own visual tutor. Golpo can turn the problem, or a solution you have already checked, into a narrated step-by-step explanation students can replay. You can start from a screenshot, a past-paper PDF, an approved worked solution, or your own recording.

The finished artifact on this page is a whiteboard walkthrough of one geometry question. The embedded video and the screen recording below are that discovery render: a screenshot went in, and Golpo drafted the narration and the pictures. A student can use that path to study. A tutor who will hand the video to other people still checks it against the official answer key, then publishes from the checked wording.

This walkthrough is for students stuck on a single problem, and for tutors and coaching teachers who want a replayable explanation of a question they are allowed to teach. Golpo drafts, draws, narrates, and syncs. You keep the checkpoint before anything is published.

The question this page actually uses

The source image is Question 5 from JEE Advanced 2025 Paper 1, Mathematics. It is a multi-correct 3D geometry item: the line of intersection of two planes, a parallel line through a given point, and the foot of a perpendicular. JEE Main is a different exam. The paper to cite is Paper 1.

Here is the question image this render started from:

The organizing body's Paper 1 solutions list options A and C as the correct statements. The method in that solutions document takes the direction of the first line from the cross product of the two plane normals, writes the parallel line through P(2, −1, 3), finds where that line meets the plane 2x + y − 2z = 6, and then finds the foot of the perpendicular from P to that plane. Lengths, the triangle area, and the angle are checked against the four statements. Use the official file as the key: JEE Advanced 2025 Paper 1 solutions.

What the finished video shows

This is the video Golpo generated from that screenshot. It is the discovery output for this question: a narrated whiteboard pass over the vectors, the line, the intersection, and the final statements.

Treat the video as a draft you can inspect, then compare with the official key. A fluent walkthrough can still swap a sign, drop a square root, or mark the wrong statement. This page does not document an equation-by-equation review of this file, and it does not document a later correction. Those steps are the recipe below, for the next time you run it.

How that render was produced

The screen recording shows the session that produced the video above: the question image, the prompt, and the generation. It is the record of that discovery pass.

From the question to a video you can stand behind

Use two paths. The first is for finding your way through a problem. The second is for anything another student will rely on.

Discovery: screenshot and Prompt Mode

Capture the full question, including the figure and the statements. In Golpo, start in Prompt Mode and attach the image. A study prompt can be as direct as: solve this JEE Advanced 2025 Paper 1 question on the whiteboard, keep each algebraic step visible, and state which options you conclude. Golpo drafts the narration from that prompt and the image. Turn on Edit script before creating video and read the draft against the official key before you spend the render. Prompt Mode is available on all plans. Uploading the source does not make the solution correct.

Publishing: a checked solution in Script Mode

When you already trust the reasoning, paste that worked solution as the narration in Script Mode. Golpo speaks the words you supply. Budget about 1,050 characters of narration per selected minute. Put drawing directions in Video Instructions, so they are not spoken aloud. In the API, custom_script supplies narration. enable_script_only_mode is a different switch: it generates a script and does not, by itself, mean "speak this exact text."

Settings that matter on a multi-step solution

• Notation. Write precise mathematics as Markdown or LaTeX in the script. Golpo renders supplied equations into the narrated visuals. The equations guide shows the pattern. Equation support is not a proof checker. Read every sign, unit, and final statement yourself.
• Expanded layout. Expanded spreads components across more scenes, so intermediate algebra has room. Compact groups components together, which suits a short overview of the method. Notebook is Compact-only. The comparison is in the Compact and Expanded guide. In the API, an unsuffixed style value selects Expanded, and _compact selects Compact.
• Scene boundaries. Custom Scenes, on Growth and higher plans and on Pay As You Go, let you move sentence boundaries so the cross product, the intersection, and the area each get a scene, within the engine limit. The map does not rewrite the narration or establish that the algebra is right.
• The figure. When the geometry must match the paper, insert the approved diagram with Own Media, on Business and higher plans and on Pay As You Go. A generated sketch of a plane is not the exam figure.
• Labels. On-screen text from script only, on Canvas and Sketch, limits generated labels to the script. Golpo may show a subset of those words. It is not a caption track, and it does not verify the source. In the API the field is onscreen_text_from_script_only.
• The teacher's voice. Voice Clone, on Business and higher plans and on Pay As You Go, speaks new narration in an authorized saved voice. Own Narration, on the same plans, builds the visuals around a recording you supply. The recording sets the duration and the spoken language. A language setting does not translate that audio. Use a voice only with permission.

One correction after you compare it with the key

Play the video next to the official solutions and check PQ, QR, the area, and the angle, plus which statements are marked. If a spoken step is wrong, change the script and generate again. If the words are right and a label or a drawn value is wrong, use frame editing on Business and higher plans and on Pay As You Go. That edit changes visuals such as labels and images. It does not repair narration or audio. A charged edit is billed from the selected duration of that version. This page shows the first discovery render only. The correction pass is yours to run.

One reuse: a parallel problem

After the checked walkthrough is approved, write a new practice problem with the same idea and different numbers. Generate it with the same style, voice, scene pattern, and script-review step. That second video is a new generation, for the next homework set or the next class that meets this topic. It is not a free rewrite of the first file.

Plan, duration, and credits

A standard video uses 1 credit per selected minute. The embeds on this page do not record which duration was selected, so this page does not state the credit total for those files. On Pay As You Go, Edit script before creating video charges 10% after the script and 90% after the video. Custom Scenes require Growth or higher, or Pay As You Go. Color begins at Growth. Own Media, frame editing, Voice Clone, and Own Narration require Business or higher, or Pay As You Go. Prices and the duration options in your account are on the pricing page. The Free plan is not a downloadable publishing workflow.

Review before anyone studies from it

• Compare every marked statement with the official key, or with a solution you worked yourself.
• Check signs, roots, units, and the final option letters in both the narration and the frames.
• If the paper includes a figure, confirm the inserted diagram matches it.
• Confirm you have the right to share the question, separate from the right to study it.
• If you publish, add captions in the player you actually use. On-screen labels are not that caption file.

Where a screenshot start is reasonable

Algebra, vectors, calculus, mechanics, stoichiometry, and quantitative exam items are all reasonable places to try a visual walkthrough, once a person checks the result. A clear photo is the discovery input. The publishing input is the checked solution. A coaching center's hypothetical library of every past paper is a rights project and a review project, not an automatic render.

Frequently asked questions

Does Golpo solve every exam question correctly?

No. Prompt Mode can draft a walkthrough from a screenshot. You still compare the script and the frames with the answer key. Equation rendering shows the mathematics you supplied. It does not prove the reasoning.

Is the example from JEE Main or JEE Advanced?

It is Question 5 of JEE Advanced 2025 Paper 1, Mathematics. JEE Main is a different exam. The official Paper 1 solutions mark A and C for this item.

Can I publish a video of a copyrighted past-paper question?

Personal study of a paper you may lawfully use is different from distributing the paper or a solution library. Get permission, or teach from original parallel problems, before you publish.

How are credits charged for a question video?

A standard video uses 1 credit per selected minute. There is no separate "free question" meter hiding inside a paid plan. On Pay As You Go, the script checkpoint is 10% and the video is 90%. See the pricing page for current plans.

What if the video marks the wrong option?

Fix the spoken reasoning in the script and generate again. Use frame editing only for a wrong label or image, on Business and higher plans and on Pay As You Go. Frame editing does not change the narration.

Can the video use my teaching voice?

Voice Clone speaks new scripts in an authorized saved voice. Own Narration uses a recording you supply and does not translate that recording. Both are on Business and higher plans and on Pay As You Go, and both need permission.

Related guides

• Prompt Mode and Script Mode
• Markdown and LaTeX equations
• Custom Scenes
• Golpo for education

Make one checked walkthrough

Pick one practice question students ask for every week, one you are allowed to teach. Check a worked solution against the key, generate it in Golpo, and correct the first miss you find. Then run a parallel problem with the same style and voice before the next class that needs this topic. Create that video in Golpo.