Free & Open SourceFor Linux, with any Vulkan graphics card
Sharper videos.
On your computer.
Localscale upscales small, old or noisy videos with AI, up to 4K. Everything runs on your graphics card, nothing gets uploaded.
Meridian · Netflix Open Content · CC BY 4.0 · converted from the 4K master to SDR and scaled down to 360p
Sol Levante · Netflix, Production I.G · CC BY 4.0 · converted to SDR and scaled down to 360p
Apollo 11 · Saturn V launch · NASA · public domain · 480p from the NASA archive
Real results from Localscale, nothing retouched. Just like in the app, holding Space shows only the original.
Drop in, pick a type, Enter.
That’s all there is to learn.
1Drop in videos
Single files or whole folders. They are read, never copied.
2Pick a type
Anime, film, old footage or phone video. The right model comes with it.
3Before and after
The preview upscales live. Space shows the original.
4Start
The app tells you up front how long it will take. Just press Enter.
Sharper.
Everything else stays as it was.
Localscale improves the picture. Everything else comes along exactly as it is.
Sound, subtitles, chapters
Every track carries over to the new file.
Color and HDR
HDR stays HDR, and colors stay true.
Aspect ratio
Portrait stays portrait, DVDs get the right shape.
Old TV recordings
Interlacing is detected and converted cleanly.
Your original
It is never touched. The new file lands right next to it.
Your privacy
Everything stays on your computer, nothing gets uploaded.
An anime episode
in about 13 minutes.
On a fast graphics card, Localscale often finishes in less time than the video runs. Only high-resolution live action takes longer.
Anime episode
540p → 1080p
- 24 minabout 13 min
Old recording
480p → 1080p
- 1 habout 52 min
Feature film
720p → 1440p
- 1 h 30 minabout 2 h 20 min
- No sleep while it’s working
- Progress in the taskbar
- A notification when it’s done
Questions?
Answers.
Nothing. Localscale is open source under the MIT license.
Linux, a graphics card with Vulkan (AMD, Intel or NVIDIA) and ffmpeg. Localscale downloads the AI models itself on first launch, about 10 MB in total.
No. Everything is processed on your computer. Localscale only goes online to download the models.
On a fast graphics card, an anime episode is done in about 13 minutes and a 720p feature film in just over two hours. Slower cards take longer. The app estimates the time before you start.
It helps most with small but clean footage. Heavily compressed clips come out calmer and sharper, but not like new.
No, only for Linux at the moment. That’s where it’s built and tested.
Yes. Import your own ncnn models (.param and .bin) in Settings under Models. Localscale measures the scale factor itself when it loads them.
Get Localscale.
Free for Linux.
Version 2.0.0 · MIT license · Source code on GitHub
git clone https://github.com/Leonhard-Schwarz/localscale.git
cd localscale
./install.shThe script installs ffmpeg and ncnn through pacman if needed, builds the app and adds it to your app menu. Rust must be installed.
git clone https://github.com/Leonhard-Schwarz/localscale.git
cd localscale
cargo build --release
./target/release/localscaleGet ffmpeg and ncnn with Vulkan from your package manager, then build it yourself. So far it has only been tested on Arch Linux.
localscale run movie.mkv --preset film --target 4k
localscale run show.mkv --preset film --denoise 30
localscale probe movie.mkvEverything the interface can do also works in the terminal.