Video upscaling

Choose a method under Upscale in the Picture button’s menu (or Ctrl+I, or Ctrl+N → Picture quality). The menu stays open so you can see each change, and the button shows a blue dot while an upscale method or picture correction is on. It changes while the video plays and is saved in script-opts\nanum-upscale.conf in your settings folder. This is independent of CUDA speech recognition: you do not need the CUDA Toolkit for upscaling.

The Picture button on the playback bar opens the menu; the Upscale choices are at the top.

Method	What it does
Default	Turns off the extra processing and restores the renderer and scaler settings this feature changed. Your own filters and shaders are kept.
High-quality scaling	On a GPU renderer, uses ewa_lanczossharp with ringing suppression 0.6. A better scaler, not an AI restoration.
NVIDIA RTX upscaling	Uses gpu-next, Direct3D 11, D3D11VA and the NVIDIA extension of the d3d11vpp filter. Needs a supported NVIDIA GPU and driver, and RTX Video Super Resolution switched on in the NVIDIA app or control panel.
User shaders	Add mpv-compatible .glsl, .hook or .frag files one at a time. Select an entry to reorder or remove it. They run after existing shaders, in the order you chose.

No third-party shader packs (such as Anime4K or FSRCNNX) are bundled; you can add them yourself.

RTX scale

Choose Auto, 1.5x, 2x or 3x.

• Auto computes from the source and window size, rounds up in 0.25 steps, caps at 4x, and removes the filter when no enlargement is needed. Window resizes are applied after a short pause.
• Fixed factors scale both width and height, for example 2x takes 1080p to 4K. Do not blindly apply a fixed factor to a video that is already 4K or a window that is smaller than the source.

Note

The status “Requested” means the filter was requested. It does not confirm that the driver is doing AI processing internally. RTX HDR conversion is never enabled, and HDR or 10-bit support depends on your driver and the video path.

Good to know

• The renderer can briefly recreate the picture when you switch methods.
• An unsupported GPU or a shader compile error appears in the status, and the processing this feature added is removed.
• Speech recognition, a local translation model and upscaling all use the GPU; together they can drop frames. Lower the factor or try high-quality scaling.