KayBiHow to search lecture recordings for the explanation you need
Find a specific concept in recorded lectures with better questions, meaningful timestamps, and a habit of checking the original explanation.
Last updated: August 16, 2026
Want to try the workflow with your own lectures? Try KayBi free for 7 days (adults 18+; no card required).
1. Describe the concept you need to recover
Begin with the explanation, not only a phrase you hope the lecturer used. Ask a question that names the concept and the gap in your understanding, such as “Where does the lecturer explain why this sampling method introduces bias?” Add the course, unit, lecturer, or assessment topic if you remember it.
Keep nearby terms ready. A lecturer may say “variance” when you remember “spread,” or “regularization” when you remember “preventing overfitting.” Search the technical term, the plain-language idea, and any acronym separately.
2. Give each recording useful context
Rename or label recordings with the course, lecture number, date, and topic when you can. Store slides, reading PDFs, screenshots, or your own notes alongside the recording if they belong to the same lesson. These clues help distinguish similar explanations across a long term.
Search works best when long recordings are connected to meaningful time segments. A whole two-hour file is hard to review; a result tied to a short timestamp gives you a realistic place to start listening.
3. Search in layers
Use a broad-to-narrow sequence so you do not miss an explanation just because your remembered wording is different:
- Search the whole lecture set for the concept and its plain-language alternatives.
- Narrow by course, date, lecturer, unit, or the problem being solved.
- Search the strongest recording for a distinctive term, example, formula, or question from the class.
If the lecturer explains an idea through an analogy, search the topic around the analogy too. Also try the question a student asked; the answer may be easier to locate through that exchange than through the formal definition.
4. Listen around the timestamp
Do not rely on an isolated transcript snippet. Listen before and after the result so you can hear the assumptions, correction, example, and conclusion. A lecturer may first give an intuitive explanation and then add a limitation that changes how you should apply it.
Save the lecture title, timestamp, slide or page reference, and the question the explanation answers. For exam or professional work, compare it with the assigned reading or primary source. A timestamp makes the teaching moment easy to revisit, but it is not a substitute for understanding the surrounding context.
When a multimodal memory tool helps
A memory tool can help when the explanation is spread across a recording, lecture slides, a reading PDF, and your follow-up notes. KayBi is one option for asking across supported audio, PDFs, images, video, text/markdown files, and normal conversations, then opening a citation to the relevant source moment.
Treat the returned answer as a study shortcut, not an authority. Open the timestamp or page, check the original material, and ask a narrower follow-up when the explanation is incomplete or the sources disagree.
Privacy, consent, and an adult-learning trial
Recordings may include classmates, lecturers, personal stories, or assessment information. Follow your institution’s recording and sharing rules, get consent where required, and check who can access uploads, how deletion works, and which providers process the audio.
KayBi does not sell data or train KayBi-owned models on private user data by default; provider terms and processing apply. KayBi does not claim true end-to-end encryption in V1. KayBi is for adults 18+ and offers a no-card 7-day trial with published limits, so start with a recording you are allowed to process and verify every timestamp.