{"id":13420336,"url":"https://github.com/libass/libass","last_synced_at":"2025-04-29T18:38:13.642Z","repository":{"id":9736256,"uuid":"11696642","full_name":"libass/libass","owner":"libass","description":"libass is a portable subtitle renderer for the ASS/SSA (Advanced Substation Alpha/Substation Alpha) subtitle format.","archived":false,"fork":false,"pushed_at":"2025-04-09T19:00:05.000Z","size":3452,"stargazers_count":994,"open_issues_count":147,"forks_count":225,"subscribers_count":54,"default_branch":"master","last_synced_at":"2025-04-22T03:44:52.878Z","etag":null,"topics":["advanced-substation-alpha","ass","c","cross-platform","libass","ssa","substation-alpha","subtitle-format","subtitle-formats","subtitles"],"latest_commit_sha":null,"homepage":"","language":"C","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"isc","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/libass.png","metadata":{"files":{"readme":"README.md","changelog":"Changelog","contributing":null,"funding":null,"license":"COPYING","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2013-07-26T23:11:51.000Z","updated_at":"2025-04-18T12:06:27.000Z","dependencies_parsed_at":"2023-01-13T15:32:32.974Z","dependency_job_id":"b4a88baa-41a3-494c-9765-71129bfb4f72","html_url":"https://github.com/libass/libass","commit_stats":{"total_commits":1989,"total_committers":58,"mean_commits":"34.293103448275865","dds":0.8129713423831071,"last_synced_commit":"a0aefba3cf357f74bf67410d71a1e0cf37d6c3da"},"previous_names":[],"tags_count":34,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/libass%2Flibass","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/libass%2Flibass/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/libass%2Flibass/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/libass%2Flibass/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/libass","download_url":"https://codeload.github.com/libass/libass/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":251561204,"owners_count":21609353,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["advanced-substation-alpha","ass","c","cross-platform","libass","ssa","substation-alpha","subtitle-format","subtitle-formats","subtitles"],"created_at":"2024-07-30T22:01:31.526Z","updated_at":"2025-04-29T18:38:13.623Z","avatar_url":"https://github.com/libass.png","language":"C","readme":"libass [![Coverity scan build status](https://scan.coverity.com/projects/3531/badge.svg)](https://scan.coverity.com/projects/3531) [![Build status](https://github.com/libass/libass/actions/workflows/ghci.yml/badge.svg?branch=master\u0026event=push)](https://github.com/libass/libass/actions/workflows/ghci.yml?query=branch%3Amaster+event%3Apush)\n======\nlibass is a portable subtitle renderer for the ASS/SSA (Advanced Substation Alpha/Substation Alpha) subtitle format. It is mostly compatible with VSFilter.\n\nGet it\n======\nSee [GitHub releases](https://github.com/libass/libass/releases) for the latest release 0.17.3 (released 2024-07-02).\nSee the [changelog](https://github.com/libass/libass/blob/master/Changelog) for a detailed list of changes.\n\nSource code is available from our [GitHub repository](https://github.com/libass/libass).\n\nContact\n=======\nPlease use the [issue tracker](https://github.com/libass/libass/issues?state=open) to report bugs or feature requests.\n\nWe have an IRC channel, too. Talk to us on [irc.libera.chat/#libass](https://web.libera.chat/#libass). Note that we cannot be online all the time and we cannot answer IRC questions if you leave the channel. Even if you do not get an immediate response, keep your IRC client open, and we will eventually get back to you.\n\nBuilding\n========\n\nlibass offers two build systems to choose from: Autotools and Meson.\n\nAutotools is preferred for development since it integrates with our testing\ninfrastructure and is feature-complete on all platforms supported by Autotools.  \nIf you are packaging libass for distribution, Autotools is recommended;\nwhen packaging for Windows Meson should work equally well.\n\nMeson lacks integration with testing infrastructure, but works otherwise well on\nWindows. It is suited for static-only builds on any platform well supported by\nMeson and as a Meson subproject.\nNotably, Meson supports MSVC and generation of VS project files.\n\nMacro defines\n-------------\n\nUnless developing libass there’s usually no need to manually define macros\nand there are no stability guarantees for these manual defines.\n\n- `DEBUG_LEVEL=0..3`\n  - `0` use the default set of asserts; implied if macro is not defined at all\n  - `1`, `2` *unused*\n  - `3` additionally assert assumptions usually pledged to the compiler for optimization purposes\n\nInformation about the ASS format:\n=================================\n- [ASS format overview](https://github.com/libass/libass/wiki/ASS-File-Format-Guide)\n- [ASS override tags (Aegisub manual)](http://docs.aegisub.org/latest/ASS_Tags/)\n- [VSFilter source code (Guliverkli2)](http://sourceforge.net/p/guliverkli2/code/HEAD/tree/src/subtitles/)\n\nOther ASS/SSA implementations:\n==============================\n- VSFilter:\n  - [xy-VSFilter/XySubFilter](https://github.com/Cyberbeing/xy-VSFilter/)\n    - [pfmod](https://github.com/pinterf/xy-VSFilter/)\n  - VSFilter in [MPC-HC](https://github.com/clsid2/mpc-hc/tree/develop/src/filters/transform/VSFilter/)\n  - [VSFilterMod](https://code.google.com/archive/p/vsfiltermod/) with custom format extensions (defunct, subsumed by forks)\n    - [sorayuki fork](https://github.com/sorayuki/VSFilterMod/) with some bugfixes (defunct)\n    - various forks focussing on internal use\n  - [Threaded VSFilter](https://code.google.com/p/threaded-vsfilter/) (defunct)\n  - VSFilter in [Guliverkli2](http://sourceforge.net/projects/guliverkli2/) (defunct, subsumed by all of the above)\n  - VSFilter in [guliverkli](http://sourceforge.net/projects/guliverkli/) (defunct, forked as Guliverkli2)\n- [ffdshow](http://ffdshow-tryout.sourceforge.net/) (defunct)\n- [Perian](https://github.com/MaddTheSane/perian) (defunct)\n- [asa](https://web.archive.org/web/20110906033709/http://asa.diac24.net/) (defunct)\n- [libjass](https://github.com/Arnavion/libjass) (defunct)\n- [ASS.js](https://github.com/weizhenye/ASS)\n\nPackaging status\n================\n\n[![Packaging status](https://repology.org/badge/vertical-allrepos/libass.svg?columns=3\u0026header=libass\u0026exclude_unsupported=1)](https://repology.org/project/libass/versions)\n","funding_links":[],"categories":["TODO scan for Android support in followings","Multimedia","C","HarmonyOS","内存分配"],"sub_categories":["Windows Manager","多媒体"],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flibass%2Flibass","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flibass%2Flibass","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flibass%2Flibass/lists"}