How to Screenshot Lecture Videos for Study Notes

Lecture recordings are packed with slides, diagrams, and notes. Manually pausing and screenshotting every slide is tedious — especially for a 90-minute lecture. By extracting frames automatically, you can capture every key slide in under a minute.

Step 1: Download Your Lecture Recording

You need the video file on your device first. Zoom recordings are usually available in your account under Recordings as MP4 files. Microsoft Teams recordings are stored in SharePoint or OneDrive — look for a download option in the three-dot menu. Panopto and other LMS platforms vary; check with your institution or lecturer if downloads are restricted.

Step 2: Calculate Your Frame Count

The goal is one frame per slide change. Since you don't know exactly when slides change, extract one frame per minute and let the preview gallery show you what you've got.

• 60-minute lecture → 60 frames
• 90-minute lecture → 90 frames
• 2-hour lecture → 120 frames
• Fast-paced or slide-dense? Double the count for better coverage.

Step 3: Extract with FrameRipper

Upload your lecture video to FrameRipper. After loading, you'll see the duration confirmed on screen. Set your frame count, choose JPEG (smaller files, perfectly readable for notes), and click Extract Frames.

The preview gallery builds in real time. When finished, click Download ZIP to get all your lecture screenshots at once.

Step 4: Organise Your Screenshots

The ZIP contains frames named sequentially: frame_0001.jpg, frame_0002.jpg, and so on. After unzipping you have your lecture as images.

• Import into Notion or OneNote — both apps accept image imports and you can type notes alongside each slide
• Create a PDF — on Mac, open images in Preview, select all, File → Print → Save as PDF
• Delete duplicates — frames captured mid-transition or during the same slide can be removed