libass9 - Library for SSA/ASS-formatted subtitle rendering

Distribution: openSUSE 42.1
Repository: openSUSE Multimedia Libs all
Package name: libass9
Package version: 0.13.6
Package release: 52.1
Package architecture: i586
Package type: rpm
Installed size: 202.14 KB
Download size: 89.74 KB
Official Mirror:
libass is a subtitle renderer for the ASS/SSA (Advanced Substation Alpha/Substation Alpha) subtitle format. It is mostly compatible with VSFilter.



  • libass9 = 0.13.6-52.1
  • libass9(x86-32) = 0.13.6-52.1


    Install Howto

    1. Add the openSUSE Multimedia Libs repository:
      # zypper addrepo opensuse-multimedia-libs
    2. Install libass9 rpm package:
      # zypper install libass9


    • /usr/lib/
    • /usr/lib/


    2017-02-21 - - Update to version 0.13.6: * Add Justify style override that changes text justification (left/right/center) without affecting event positioning. This breaks ABI compatibility with prior releases. * Fix ass_set_cache_limits() to affect total bitmap cache size including composite bitmap cache. * Number parsing fixes + Fix illegal read when parsing some numbers in scientific notation with huge exponents. + Correctly evaluate numbers in scientific notation with large exponents. + Correctly evaluate numbers with many leading zeros. * Bug fixes found with fuzzing + Fix a small memory leak in the parser. + Fix illegal read in the parser on specially crafted input with \t tags.

    2016-10-05 - - Update 0.13.4: * Fuzzing fixes bnc#1002982 CVE-2016-7969, CVE-2016-7970 and CVE-2016-7972 * Improve compatibility/portablility of build system, should fix e.g. compilation on Solaris. * Fix memory leak in DirectWrite font provider. * Fix the rasterizer when rendering some large outlines. * Remove hack that forced RTL base direction depending on font encoding. * Greatly improve the internal caches with refcounting and gradual clearing.

    2016-02-25 - - Update to 0.13.2 * Add ass_set_check_readorder() API function to disable use of the ReadOrder field for duplicate checking in ass_process_chunk(). * ass_step_sub(track, now, 0) now finds the start of the subtitle at now. * Bug fixes: + Fix an issue with the new duplicate checking, which could lead to missing subtitles after seeking. + Fix a crash with Core Text under specific circumstances.

    2015-12-17 - - Update to 0.13.1 * Much faster duplicate event check in ass_process_chunk. * Interpret negative timestamp components as actual negative numbers. * Look up fonts that contain PostScript outlines by their PostScript name instead of their full names. Family names continue to be used for all fonts. * Keep spaces in font names * Drop support for Fontconfig < 2.10.92 to ensure correct font matching * Fix some small memory leaks, potential crashes and bad data uses

    2015-12-16 - - Update summary/description

    2015-12-07 - - Update RPM groups

    2015-11-22 - - Update to 0.13.0 * Add native font selection backends for OSX (CoreText) and Windows (DirectWrite). You can now run libass without fontconfig on these platforms. This fixes problems with fontconfig behaving badly on these platforms (it could take minutes to scan all system fonts). Even on Linux, this speeds up loading of embedded fonts (such as provided by ass_add_font()). The DirectWrite backend only works on Windows Vista and later. On XP, fontconfig is still needed. libass can be compiled with both DirectWrite and fontconfig, and then it will fallback to fontconfig automatically if DirectWrite is not available at runtime. * Add ass_get_available_font_providers() API function. * Change the 4th parameter of ass_set_fonts(). This now selects the font provider. This is somewhat backwards compatible with the old behavior, but if you ever passed values other than 0 or 1, your application might break with this libass release. * The ass_fonts_update() function now does nothing. It's kept for backward compatibility only. * Much faster gaussian blur. This can bring a large speedup with big blurred signs and such. * Drop ENCA support * Bug fixes + Fix compilation of the freetype rasterizer (disabled by default) + Fix rendering with some cases of consecutive line breaks (\N\N). + Fix some memory allocation failure checks + Avoid system locale dependent behavior by reinventing some standard C functions + Fix rendering errors with strikes (GH #193) + MSVC compilation fixes - Enable harfbuzz and yasm build requires