Video chat is most useful when the question is specific and the source is bounded. Ask the assistant to work from the transcript, then check the supporting passage yourself.
Ask for an answer and its evidence
Try: What does the speaker mean by this term, and which passage supports that interpretation? Request a timestamp or a short quote. A general explanation of the topic may be accurate yet absent from this particular video.
Separate retrieval from evaluation
First ask what the source claims. Then ask which assumptions it relies on and which questions it leaves unanswered. If you want external fact checking, use independent sources; a transcript-only answer cannot provide it.
Use constraints that reveal uncertainty
Ask the assistant to say when the answer is not supported. For coding tutorials, request the stated command and its surrounding explanation rather than a guessed replacement. Verify current library behavior in the official documentation.
Keep a record of the answer
Export the useful answer with the source URL and checked passage. Do not treat conversational fluency as speaker attribution. If the transcript is edited, regenerate answers that depend on the corrected wording.