Manual Video Review & Keypoint Extraction

I have roughly 50 hours of raw video that must be watched carefully from start to finish. Each time a conversation or dialogue takes place, I need the key points captured—no full transcription, just the essence of what is said... (Budget: $250 - $750 USD, Jobs: Data Analysis, Data Entry, Data Management, Data Processing, Excel, Google Sheets, Time Management, Transcription, Video Editing, Video Production)