Sharpview – FSR Video Upscaler by Andrea Cadeddu

Sharpview upscales the videos you watch (YouTube, Twitch, Dailymotion, embedded players) in real time with FSR 1, AMD's open-source spatial upscaler, running locally on your graphics card through WebGL2.

Features:
• FSR 1 upscaling (EASU + RCAS) on every video shown larger than its resolution, e.g. 480p/720p in theater mode or fullscreen
• Optional sharpening for videos that are not enlarged, e.g. 1080p on a 1080p screen (in the add-on's settings)
• Three qualities: FSR 1, a lighter Bicubic + RCAS for weak GPUs (both with adjustable sharpness), and Anime4K for anime and cartoons, which cleans up compression and redraws the lines (needs a capable GPU)
• Optional deband: smooths the steps that compression leaves on skies, fog and dark gradients
• One render per video frame, also at 60 fps
• Automatic fallbacks: the original video stays visible when upscaling is not needed, for DRM-protected or cross-origin videos, and when the GPU cannot keep up
• Per-site rules, A/B comparison (Alt+Shift+O; hold Ctrl and move the mouse to move the line) and an info label with resolution, fps and GPU time per frame (Alt+Shift+I)
• No network requests, no data collection; settings sync with your Firefox account
• Available in English, Italian, French, German and Spanish

On first install, a page asks for access to sites: the extension needs it to find videos on web pages.

Limitations: DRM-protected services (Netflix, Prime Video, Disney+…) cannot be processed. If NVIDIA RTX Video Super Resolution is enabled in Firefox, Sharpview's output replaces it while active.

Open source (MIT): https://github.com/skateddu/sharpview-fsr-video-upscaler

AMD, FidelityFX and FSR are trademarks of Advanced Micro Devices, Inc. This add-on is not affiliated with or endorsed by AMD.