Ameko

Cross-platform editor for Advanced Substation Alpha (ASS) subtitles

WindowsSystem ToolsOpen source

v1.2.2

201.5 MBscanned clean

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About

Ameko lets users create and edit Advanced Substation Alpha (ASS) subtitles while watching the associated video and refining dialogue timing. Developed by AmekoProject, it is an open-source System Tools program for Windows x64. Its Audio Visualizer displays timestamps, assigns subtitle timing with left- or right-clicks, and seeks through the video with a middle-click.

Timing defaults to Snap to Frame for frame-accurate placement, while Free Placement allows finer positioning; holding Shift temporarily switches modes, and settings can change the default. Subtitle creators can use the Subtitle Profiler to measure render time, image size, and image count for every event, a chosen time span, or selected events, then export the results to CSV.

The Scripting Playground exposes script source before installation and lets users inspect or edit scripts already installed, while the --safe launch option temporarily turns off script loading. A dedicated vertical-video layout, persistent window state across restarts, unmanaged-crash reporting, and Linux drag-and-drop support round out the workflow for subtitle editors, translators, and video creators.

Ameko requires Windows 10 or later or Windows Server 2016 or later on x64 hardware. Version 1.2.2 is a hotfix for a Windows 1.2.0 problem that caused a crash and restart when closing the program, and it also fixes crashes when opening one video while another was still opening. Additional corrections address the About box, command-line paths containing spaces, frame-seek calculations, and an intermittently closing Command Palette.

Requires Windows 10+ · Server 2016+ · Architecture: x64

What's new in v1.2.2

Hotfix This release addresses an issue discovered in 1.2.0 where Ameko would crash and restart upon closing the program on Windows. New Features Timing with the Audio Visualizer - View timestamps - Time subtitles with left/right click - Seek video with middle click - Two timing modes: Snap to Frame (default), Free Placement - Temporarily switch with Shift, or swap default in settings Subtitle Profiler - Benchmark render time, image size, and image count - Choose between all events, selected time range, or selected events - Export results to CSV Scripting - New Scripting Playground experience - More details on the wiki - View the source code of scripts before installing them - View and modify the source code of installed scripts Linux - Drag and Drop Other - Start with --safe to temporarily disable script loading - New layout for working with vertical video - Window state persists across restarts - Unmanaged crashes now trigger crash reporter Fixes - Fixed crash when opening a video while opening a video - Fixed crash when opening About box - Fixed loading of Files\ with\ spaces from the command-line - Fixed incorrect frame seek calculation - Fixed Command Palette sometimes closing instantly Full Changelog: v1.1.0...v1.2.2 Pre-built binaries are attached below. For Arch Linux users, there's also a PKGBUILD. Huge thanks to everyone who's contributed to the localization efforts, especially CiferrC! If you're interested in helping out, head over to the Crowdin project page! You can submit bugs and feature requests to the issue tracker directly, or head over to the Discord server or discussions page for a conversation. I hope you continue to enjoy using Ameko!

Details

PlatformWindows
CategorySystem Tools
LicenseOpen source
PricingFree
Package IDAmekoProject.Ameko
Latest versionv1.2.2
File typeZIP
Minimum OSWindows 10+ · Server 2016+
Architecturex64
File size201.5 MB
Published9/26/2026

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