“I go to my niche, find videos that have not high views but high number of comments. High comments signal customer pain which is unresolved. Then I make a list of all the objections the customers have and simply create better content around that, answering all those objections.”

Mine YouTube comments on low-view, high-comment videos for unresolved pain

Vikash uses a comment-to-view ratio heuristic to spot underserved questions: when a video has more comments than its view count justifies, the existing video failed to fully answer the question. He harvests those unresolved objections from the comments and makes the definitive video on the topic.