HTML5 Video Speed Controls

Simple keyboard controls for HTML5 video speed and frame-stepping

安裝腳本 ?

A lightweight userscript that adds keyboard shortcuts for playback speed and frame stepping on any HTML5 video — works on every site.

🧩 Features

🎚️ Speed control
- Press X → Slow down by 0.1×
- Press C → Speed up by 0.1×
- Press Z → Reset to 1.0×
🎞️ Frame-by-frame control
- Press Q → Previous frame (auto-pauses)
- Press E → Next frame (auto-pauses)
🧠 Smart video detection
- Automatically finds the active video (playing, visible, or largest)
- Detects dynamically added videos on single-page sites
- Tooltip overlay shows current speed or action

Install a userscript manager:
- Tampermonkey (Chrome, Edge)
- Violentmonkey (Firefox, Chromium)
Click below to install or update the script:

Once installed, open any page with an HTML5 <video> element (YouTube, Twitter, Reddit, etc.) and use the keyboard shortcuts:

Key	Action	Description
X	Speed – 0.1×	Slower playback
C	Speed + 0.1×	Faster playback
Z	Reset	Restore 1.0× speed
Q	Prev Frame	Step backward one frame (pauses video)
E	Next Frame	Step forward one frame (pauses video)

A floating tooltip at the top of the screen will briefly show the current speed or frame action.