v1.0.1 - Scale bar fix

MP4 Stream Plugin v1.0.1

Bug fix release.

Fixed

• Scale bar not updating when objective changes — The scale bar now reads pixel size fresh each frame instead of caching it at recording start. This ensures the scale bar correctly reflects the current objective's pixel size.

Added

• Debug logging for scale bar calculation (visible in CoreLog at debug level)

Download

Replace MP4Stream.jar in your mmplugins/ folder and restart Micro-Manager.

v1.0.0 - Initial Release

MP4 Stream Plugin v1.0.0

Real-time MP4 video recording for Micro-Manager 2.x using FFmpeg.

Features

• Three recording modes: Constant FPS, Real-time (VFR), Time-lapse compression
• Customizable overlays: Δt timestamp, scale bar, configurable text color/background
• Automatic segment numbering — prevents file overwrites
• Immediate finalization — MP4 closes properly when Live mode stops
• Live display scaling — uses current brightness/contrast settings

Requirements

• Micro-Manager 2.x (tested with MM Studio 2.0.3, MMCore 11.11.0)
• FFmpeg on system PATH or configured in settings

Installation

1. Download MP4Stream.jar below
2. Copy to your Micro-Manager mmplugins/ folder
3. Restart Micro-Manager
4. Enable via Plugins → On-The-Fly Image Processing → Configure Processor Pipeline

Tested On

• Windows 11
• Demo Camera (512×512)
• Hamamatsu ORCA-Fusion C14440-20UP (2304×2304)

See README for full documentation.