lutzstack

/ tools

Small tools that stay on your machine.

Three Windows utilities. Each one installs in a few clicks and runs entirely locally — your files never leave your computer, nothing uploads to a server, and there's no account to make.

Two of them open in your browser once you launch them. That's just how the interface is drawn; the work still happens on your own CPU.

ProRes LT Converter

Batch-convert MP4 and H.264 footage to Apple ProRes LT for editing.

  • Windows 10 / 11
  • v1.0.0
  • ~64 MB
  • ffmpeg included

Drop in a batch of files and it queues them one at a time, holding the original resolution and framerate at 10-bit 4:2:2 with PCM audio. Progress, speed and ETA per file. Save next to the source or anywhere else.

Useful when your NLE is choking on long-GOP camera files and you want something it can actually scrub through.

Download installer · 64-bit

YouTube Downloader

Paste a link, get the highest-quality version merged to MP4.

  • Windows 10 / 11
  • v1.0.0
  • ~98 MB
  • ffmpeg included

Several links at once is fine — they download in parallel and the box clears for the next one. Video and audio are pulled separately at their best available quality and merged locally.

The downloader ages faster than the other two: YouTube changes things and the underlying library needs updating to keep up. If a download starts failing, grab a fresh copy here — the version it's running is printed in the bottom-right of the app window.

Download installer · 64-bit

Stay Awake

Keeps Windows from sleeping, dimming, or firing the screensaver.

  • Windows 10 / 11
  • v1.0.0
  • ~2 MB
  • deps none

For long renders, long uploads, and long meetings where your status light keeps going amber. Toggle it on, forget about it, toggle it off.

Tiny, and it doesn't move your mouse pointer around to do it — it asks Windows directly.

Download installer · 64-bit

Windows will warn you on first run

These installers aren't code-signed — a certificate costs a few hundred dollars a year, which is hard to justify for a handful of tools I share with friends. So Windows shows a blue "Windows protected your PC" screen the first time you run one.

Click More info, then Run anyway. You'll only see it once per download.

How to quit them

The converter and the downloader each open a small black console window alongside your browser tab. That window is the app — closing it shuts the tool down. Closing only the browser tab leaves it running in the background.

Everything installs under your own user account, so there's no admin password and no UAC prompt. Uninstall from Settings → Apps like anything else.