Video Summarizer

Changes playback speed for videos depending on loudness of the video. Speed up long lectures at different rates, depending on whether the teacher is saying something or is just silently writing something on whiteboard.
What is Video Summarizer?
Video Summarizer is a Firefox add-on that changes playback speed for videos based on their loudness. It allows you to save time during long lectures by speeding up the teacher's speech at 1.5x rate and silent writing at 4x rate.

Add-on stats

Users: 23 ▼ -1
Rating: 5.00 (1)
Version: 1.4 (Last updated: 2020-08-10)
Creation date: 2020-08-08
Weekly download count: NaN
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • <all_urls>
  • webRequest
  • storage
  • tabs
Size: 15.69K
URLs: Website

Other platforms

Not available on Chrome
Not available on Edge
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Add-on summary

Important: Videos that are controlled by this extension are stored on my server. So most videos are not indexed and thus not managed by this extension yet! To index a video, navigate to it and click on the addon icon located next to URL bar. After few seconds, the video should be ready to view through the extension.

This extension analyses video (typically youtube one, but shall work with any HTML video) and, depending on current loundness of the video, speeds it up at different rates. One can for example speed up teacher talking at 1.5x rate, and speed up teacher writing something at whiteboard at 4x rate.

This saves quite a bit of time, especially during watching long lectures.

Permissions:

  • Access your data for all websites: This is needed to read if website contains a video and optionally speed it up.
  • Access browser tabs: This is used internally for communication between settings page (click the extension button on top, next to URL bar) and rest of the extension. This allows user to send videos to be indexed by server.

Add-on safety

Risk impact

Video Summarizer requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk likelihood

Video Summarizer has earned a fairly good reputation and likely can be trusted.

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