libass ☆
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Description:
Subtitle renderer for the ASS/SSA subtitle format
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Multimedia
Tags: subtitles multimedia c-library video rendering
Install: brew install libass
About:
Libass is a portable, high-performance C library for rendering ASS/SSA subtitle formats. It provides advanced styling, positioning, and karaoke effects support, making it the de facto standard for subtitle rendering in major media players and applications.
Key Features:
  • High-performance C library with no external dependencies
  • Full support for ASS/SSA subtitle features including advanced styling and positioning
  • Karaoke effects and animated transformations
  • Platform-independent with bindings for multiple languages
Use Cases:
  • Integrating subtitle rendering into media players and video applications
  • Converting and processing ASS/SSA subtitle files
  • Building cross-platform video editing or streaming software
Alternatives:
  • vsfilter – Windows-specific and less portable, but legacy DirectShow compatibility
  • libass-ng – Fork with minimal development activity; original libass is more actively maintained
Version History
Detected Version Rev Change Commit
Apr 10, 2026 7:35pm 1 REVISION_ONLY 46609f4c
Sep 14, 2025 9:12pm 0 VERSION_BUMP c1ffb402
Nov 25, 2024 11:55pm 0 VERSION_BUMP 2a524916
Sep 10, 2024 2:38pm 0 VERSION_BUMP d936f51b
Jul 3, 2024 4:12pm 0 VERSION_BUMP 432f9afb
May 19, 2024 11:16am 0 VERSION_BUMP 718bd1d8
Feb 27, 2023 6:14am 0 VERSION_BUMP 7a8eef3a
Feb 27, 2023 6:14am 0 VERSION_BUMP 4ba4b8f8
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