Video Speed Controller (YouTube + RuTube)

About

Video Speed Controller adds an always-visible row of speed buttons, a fine-grained slider, and customizable keyboard shortcuts to videos on YouTube
  and RuTube.

  WHAT IT DOES
  - 9 preset speed buttons on YouTube (1x, 1.25x, 1.5x, 1.75x, 2x, 2.5x, 3x, 3.5x, 4x) and 7 on RuTube (1x through 3x), positioned right below the
  video.
  - Slider for in-between values, with a coloured fill that tracks the current speed.
  - Single-click on a button = temporary speed for this video only. Double-click = save as the default for that site.
  - Configurable hotkeys (default Ctrl+C +0.1 / Ctrl+V -0.1) — assign multiple combinations per action so a remote and a keyboard can both trigger
  speed changes.
  - In-player gear menu with three tabs:
    - General: slider position (right / below / inside player), language switch (English / Russian), behavior toggles, advanced auto-recover and
  self-diagnostics switches.
    - Shortcuts: rebind speed-up / speed-down, add additional combos, reset to defaults.
    - Diagnostics: copy a structured report for bug submissions; clear cached selectors if a site update breaks the panel.
  - Toolbar popup mirrors the in-player menu so you can adjust settings without opening a video.
  - RuTube-only quality-of-life toggles: hide the overlay player title, hide Premium subscription banners.

  WHY IT'S RELIABLE
  When YouTube or RuTube ships a layout change, the panel recovers automatically through a five-strategy discovery chain (cached selector → exact
  match → substring match → walk up from the video element → geometric heuristic). A built-in watchdog detects broken state, purges bad cache entries,
   and re-attaches the panel. If the player SPA-navigates between videos, the panel re-mounts via a MutationObserver without losing your settings.

  PRIVACY
  - All settings stored locally in browser.storage.local.
  - Zero telemetry, zero analytics, zero remote calls.
  - Source available on GitHub for review.

  LANGUAGES
  English and Russian. UI language is auto-detected from your browser on first run; switch any time from the gear menu.

  LICENSE
  GPL-3.0-or-later (GNU General Public License version 3 or later).