Private by default
Upscale, convert, and clip locally on your Windows machine. Your videos do not need to leave your desktop.
Free local AI video tools for Windows
Upscale or subtitle. All locally.
Enhance footage with free AI models or generate source-language SRT subtitles with Local Whisper—one focused action at a time, entirely on your Windows PC.
Upscale your video
Readyyour-video.mp4
Preview upscale74%
Generate subtitles
Local AIyour-video.mp4
Spoken language
your-video.en.srt Sidecar subtitle file
Upscale or subtitle, convert, and clip
Four video tools.
One local app.
Enhance footage with AI, generate source-language subtitles, change formats, or select the exact start and end points you need. Queue multiple videos and process everything on your Windows PC.
Convert your video
Readytravel-footage.mp4
camera-roll.mov
Local conversion queueReady
Clip your video
Readycamera-roll.mov
Clip range00:12:08 → 00:27:41 · 15:33
Start clipping
Generate subtitles
Local AIinterview.mp4
00:00:04Welcome to Yellow Ruby.
00:00:08Everything runs locally on Windows.
Supported AI models and tools
More detail.
More control.
A focused desktop tool for enhancing footage, generating subtitles, changing formats, and keeping only the moments you need.
Scale your way
Choose x2, x3, or x4 output to fit the result you need, with the matching model scale.
GPU acceleration
DirectML and Vulkan paths help your hardware do the heavy lifting.
Keep the whole video
Upscale your frames and reassemble the result while preserving the original video’s audio track.
New AI video models
Choose RealESR-AnimeVideo v3 at x2, x3, or x4 for animated footage, or use RealBasicVSR x4 and BasicVSR++ x4 for real footage.
Generate subtitles with Local Whisper
Select the spoken language and click once to create a source-language SRT sidecar file locally. Nothing runs automatically in the background.
Totally free local conversion
Convert your videos locally at no extra cost, with output formats including MP4, MOV, MKV, AVI, WMV, and WebM.
Stack multiple videos
Queue multiple videos for upscaling, conversion, or clipping and let Yellow Ruby work through each batch in sequence.
Precise local clipping
Preview a video, set its start and end points, choose the output format, and export only the section you need.
Frequently asked questions
Local AI tools,
without the cloud.
Straightforward answers about Yellow Ruby, local processing, subtitle generation, clipping, supported models, and Windows compatibility.
Is Yellow Ruby free?
Yes. Yellow Ruby is free to download and use for local AI video upscaling, video conversion, and video clipping.
Does it upload videos?
No. Processing runs locally on your Windows PC, so your video files do not need to be uploaded to a cloud service.
Which AI models are supported?
Yellow Ruby supports Real-ESRGAN, RealESR-AnimeVideo v3, RealBasicVSR, and BasicVSR++ models for different types of footage.
Can Yellow Ruby generate subtitles?
Yes. Select a video and its spoken language, then use Local Whisper to create a source-language sidecar SRT file. Speech processing stays on your Windows PC.
Does it work on Windows?
Yes. Yellow Ruby is built for Windows desktop computers and can use DirectML or Vulkan acceleration when available.
Can I clip a video without upscaling it?
Yes. Preview the video, choose its start and end points, then export the selected range as MP4, MOV, MKV, AVI, WMV, or WebM without running an AI upscale.
Free local AI video tools for Windows
Download Yellow Ruby
for Windows.
Upscale with free AI models, generate source-language subtitles with Local Whisper, convert formats, and clip videos locally—or explore the open-source project on GitHub.