Video Summarizer icon
Video Summarizer icon

Video Summarizer

A tool and browser extensions that determines whether people in a video are currently talking or not and speeds up the video accordingly. Great for skipping time spent writing on a whiteboard in long lecture videos.

Video Summarizer screenshot 1

Cost / License

  • Free
  • Open Source

Platforms

  • Online
  • Self-Hosted
  • Firefox
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Video Summarizer was added to AlternativeTo by onyo on and this page was last updated .
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What is Video Summarizer?

This extension analyses video (typically a Youtube one, but it should work with any HTML video) and, depending on the current loudness of the video, speeds it up at different rates. One can, for example, speed up sections where the teacher is talking to a rate of 1.5x, and sections where the teacher is writing something on the whiteboard to a rate of 4x.