Turn a lecture recording into practice tests, checked against your material
Upload a lecture recording and QuerySpark writes practice tests from what is actually in it, so you can rehearse the real exam on exactly what your course covers. MP3, M4A, WAV, MP4, WEBM and more, up to 25 MB.
Example
Practice test from PSY 100 lecture
A sample of what you get from a lecture recording on psychology. Yours is written from your own file.
Question 1 · Multiple choice
In Pavlov's experiment, what was the bell before conditioning?
- Unconditioned stimulus
- Conditioned stimulus
- Neutral stimulus
- Unconditioned response
The bell produced no salivation at first; it only became a conditioned stimulus after pairing with food.
Question 2 · Multiple choice
Taking away a teenager's chores after good grades is an example of what?
- Positive reinforcement
- Negative reinforcement
- Positive punishment
- Negative punishment
Removing something unpleasant to increase a behavior is negative reinforcement.
Question 3 · Short answer
Why are slot machines so hard to quit, in operant terms?
Model answer: They pay out on a variable-ratio schedule, which produces high, steady responding that is slow to extinguish.
How we read lecture recordings
We transcribe the audio with Whisper, which also pulls the audio track out of video files, then write questions from the transcript so you can study a lecture you only half heard.
Get the best results
- Record in mono at a modest bitrate; speech does not need music quality.
- Pair the recording with the slides for the richest set.
What your practice tests include
- A timed, exam-style test mixing question types
- A score at the end, with every question you missed explained
- Questions pitched at the level you choose, from high school to professional
- The source passage behind every answer, so you can check it yourself
How you study them
Take it under exam conditions, then review your misses. Questions you got wrong go into your review queue so they come back before the real exam.
Best for: mock exams, measuring readiness, teachers building assessments.
Things that trip people up with lecture recordings
- Recordings over 25 MB need splitting or compressing first (a 60 minute lecture in mono MP3 at 48 kbps fits).
- Lecture-hall echo and distance from the speaker reduce accuracy. Sit near the front or use a clip-on mic.
- Apple .mov files are not accepted. Convert to .mp4 or export the audio.
Questions about lecture recording to practice test
Can I record a live lecture?+
Record it with your phone's voice memo app and upload the file afterwards. Check your school's recording policy first.
Does it work for other languages?+
Whisper transcribes most major languages; questions are written in the language of the lecture.
Can teachers assign the test to a class?+
Yes. Create a class, share the join code, and assign the set. You see each student's progress on every assignment.
Is the lecture recording to practice test converter free?+
Yes. You can try it free with a 3-day Pro trial and no credit card, then keep using the free plan every month.