Explanations and reviews
Try a moderate increase for recaps or topics you already know. Fine-step controls make it easier to find a pace between broad player presets.
For Firefox course learners
Set the right pace for every Udemy lesson.
Move quickly through familiar introductions, slow down hands-on demonstrations, and keep a consistent course setup with UVE’s precise HTML5 video controls.
- Fine speed steps
- A/D/S shortcuts
- Per-site memory
Lecture template1.75x
1x1.25x1.5x1.75x
A slower D faster S reset
A deliberate study pace
Match speed to the kind of lesson.
The goal is not simply to finish faster. Use playback rate as a study tool: increase it when comprehension remains comfortable and reduce it when details start to disappear.
Code and demonstrations
Drop below normal speed when you need to inspect cursor movement, commands, diagrams, or a sequence of practical steps without repeated scrubbing.
Reusable lecture setup
Save a named template that combines speed and volume. Per-site memory keeps your Udemy setting separate from YouTube, Coursera, and other sites.
Course workflow
Adjust once, then focus on learning.
UVE changes playback locally in the browser; it does not alter the course video file or your Udemy account.
- 01
Install and start a lesson
Add UVE from Firefox Add-ons, open your course, and begin playback so the HTML5 player is active.
- 02
Find a comprehension-safe pace
Start near normal speed and increase in small steps. Use A to slow down, D to speed up, and S to return to normal.
- 03
Save the useful setup
Keep it as your per-site preference or create a lecture template with both playback speed and volume.
Beyond playback rate
Build a calmer course-watching environment.
Quiet lecture audio
UVE can boost compatible HTML5 video above its normal level: up to 2x in Free and up to 6x in Pro. Increase gradually to avoid clipping and protect your hearing.
Explore volume boostCaption support
When captions are available, combine them with a slower pace for technical vocabulary or non-native speech. UVE Pro also supports subtitle search and local subtitle files.
Explore subtitle toolsAnother course platform?
The same principles work on compatible Coursera HTML5 video, but your preferred pace may differ by course format and instructor.
Read the Coursera guideUdemy speed FAQ
Practical answers for course playback.
Can UVE change the speed of Udemy course videos?
UVE can control compatible HTML5 video on Udemy in Firefox. Site updates, protected content, or embedded players can affect extension access, so test it with the specific course player you use.
What speed should I use for an Udemy lecture?
There is no single best speed. Try 1.25x for dense new material, 1.5x to 2x for familiar explanations, and below 1x for demonstrations that require close observation.
Does UVE remember my Udemy playback settings?
Yes. UVE provides per-site memory, so you can keep an Udemy preference separate from the settings used on other websites. You can also save named speed-and-volume templates.
Which UVE speed features are free?
The Free tier includes video speed control up to 3x, keyboard shortcuts, and three templates. Pro expands the speed range to 16x and supports up to five templates.