Stream Assistant

A power-user userscript for streaming services. Adds custom keyboard shortcuts, visual filters, advanced audio controls, and ad-blocking capabilities to your browser.

Why Stream Assistant?

Stream Assistant bridges the gap between basic video players and power-user needs. Whether you need precise volume normalization, advanced color grading to fix dull masters, or keyboard-driven navigation, this script brings desktop-level control to web-based video.

Features

• Playback Control: Full hotkey support for seeking, speed, and navigation.
• Visual Enhancements: Aspect ratio control, zoom control and custom color/brightness filters.
• Advanced Audio: EQ (Bass/Vocal), Mono/Stereo switching, and dynamic range compression.
• Recording: Raw video recording (browser-based, auto-pausing).
• Ad Blocking: Integrated host-based blocking for uninterrupted viewing.

Keyboard shortcuts

Playback & Navigation

• J / L or Left / Right - Seek 5s backward / forward
• S + Right / Left - Skip forward / backwards 30 seconds
• S + Up / Down - Skip forward / backwards 1 minute
• K / Space / Click - Play / pause
• Hold down Space / Hold down right mouse click - Play video at 2x speed
• F - Fullscreen
• I - Skip intro
• N - Skip end credits and jump to next episode
• 0-9 - Jump to specific percentage (0 = Beginning, 1 = 10%, etc.)
• . / , - Next / previous frame (frame stepping)
• ** Shift + L** - A-B loop (use shift+l to mart start point, end point and to cancel the loop)

Audio & Sound

• Up / Down - Volume control
• M - Mute / unmute
• V - Toggle volume normalizer on/off (dynamic range compression)
• O - Toggle surround sound on/off
• Hold down X - Censorship bleep
• E + Up / Down - Bass control
• E + Left / Right - Vocal control
• E + M - Toggle mono on/off
• E (Single press) - Revert bass, vocal controls, and mono/stereo switch

Visuals & Filters

• + / - or > / < - Change playback speed
• A - Change aspect ratio (zoom / stretch / normal)
• B - Cycle video filters (B&W, sepia, invert)
• Ctrl + Up / Down - Change brightness
• Shift + Up / Down - Change saturation
• Shift + Left / Right - Change contrast
• Hold down H - Hue color control (rainbow cycle)
• R - Revert all filters (hue, contrast, saturation, brightness) to normal
• Shift + R - Toggle video recorder on/off (raw video without filters and effects) (Does not work with DRM protected content)
• Ctrl + Shift + R - Toggle video recorder on/off (supports filters and effects, splits video recording into 15 minute chunks) (DRM protected video is blacked out)

Visual Filter Presets (Color grading profiles and display enhancement modes)

• Ctrl + 1 - Retro CRT Soften (Softens harsh blocky pixels on low-bitrate streams)
• Ctrl + 2 - Vibrant Punch (Boosts dull, washed-out color grading)
• Ctrl + 3 - Midnight Dark Room (Tames blinding white backgrounds for late-night viewing)
• Ctrl + 4 - Warm Vintage Film (Gives digital transfers an aged, warm theatrical look)
• Ctrl + 5 - Monochrome Noir (A crisp, high-contrast black-and-white conversion)
• Ctrl + 6 - Cool Sci-Fi / Cyber (An inverted color scheme that acts as an emergency high-contrast dark mode)
• Ctrl + 7 - Faded Archive Correction (Neutralizes nasty green or magenta color casts in old video rips)
• Ctrl + 8 - Cinematic Crush (Deepens shadow details to hide background compression noise in dark scenes)
• Ctrl + 9 - Crisp High-Key (Brightens up dim, murky master recordings without completely blowing out highlights)
• Shift + 1 - Teal & Orange Blockbuster (Pushes a stylized modern Hollywood color grade)
• Shift + 2 - Deep Cyberpunk Neon (Enhances purples, blues, and electric tones)
• Shift + 3 - Aged 16mm Horror Grain/Warmth (Heavier vintage look than profile 4, great for gritty 70s/80s analog rips)
• Shift + 4 - High-Contrast Silhouette / Edge Out (Crushes midtones heavily to create high-drama shadow play)
• Shift + 5 - Muted Atmospheric Depths (A cold, desaturated blue tint suited for bleak winter or thriller scenes)
• Shift + 6 - Solarized Retro Psychedelia (A wild, experimental acid-trip look for music or surreal content)
• Shift + 7 - Sepia Antique Daguerreotype (Pushes an extreme historical photo/film aesthetic)
• Shift + 8 - Gothic Midnight Desat (A drained, moody look that strips the color down to a ghostly silver tint)
• Shift + 9 - Hyper-Luminous Pop (An aggressive pop-art style brightness and color lift for dim web video)
• Ctrl + 0 or Shift + 0 - Revert back to normal

BETA Features

• Shift + Mousewheel - Zoom in/out (does currently not work in fullscreen, and not all streaming services are supported)

Supported streaming services

• Adult Swim
• Amazon Prime Video
• AMC+
• Apple TV+
• Clownfish TV
• Comedy Central
• Crunchyroll
• DailyMotion
• DAZN
• Discovery+
• Disney+
• Distro TV
• Dove Channel
• FAWESOME
• Fox
• FreeVee
• Frndly TV
• HGTV Go
• HBO Max
• HiDive
• Hulu
• Investigation Discovery
• Kick
• Klowd TV
• Magellan TV
• Midnight Pulp
• Ovation TV
• Paramount+
• Peacock TV
• Plex
• Pluto TV
• PureFlix
• Retro Crush
• Rumble
• Sling TV
• Spectrum
• The Roku Channel
• Tubi
• Twitch
• Vaughn Live
• Vimeo
• YouTube

Installation

1. Install a userscript manager like Tampermonkey or Violentmonkey.
   
2. Install the script

Ad blocking

This script does not block in-house ads such as self-promotion.
And note that if an ad is not blocked, this script gives you numerous ways to fast forward.

Support

If you're having technical issues or feature requests, please open an Issue.