libass

Displays subtitles in .ass format from JavaScript. Supports most SSA/ASS features, easily integrates with HTML5 videos.

A Python library for serialization and deserialization of ASS subtitle file format tags markup.

Self-hosted AI video editor for YouTube Shorts, TikTok & Reels — auto karaoke captions (faster-whisper), AI b-roll, camera zooms, stickers, SFX and voice cleanup in one ffmpeg pass. FastAPI + Python, free re-renders, your own OpenAI key.

A Python library for serialization and deserialization of ASS subtitle file format.

Two-row karaoke effect (KFX) template for ASS subtitles, with furigana

一站式日式卡拉OK(ニコカラ)视频制作工具：下载→歌词→去人声→对轴→注音→合成，全本地推理

给视频自动加字幕并烧进画面，本地离线跑：whisper.cpp (large-v3) 转录 + FFmpeg/libass 烧录，自动断行、自动选字体、无需 API key。Auto-generate burned-in subtitles for any video, fully offline, no API key.

Fix Thai words split across lines in Typst (ZWSP + box show rule) and Thai tone marks vanishing in ffmpeg burned-in subtitles (use ass= not subtitles=)

Profiles your .ass (files)

Word-by-word highlighted captions (Shorts/Reels style) made offline with faster-whisper word timestamps, an .ass file and ffmpeg.

本地多语言字级字幕桌面工具：Qwen3 识别与强制对齐，波形上改逐字时间，导出 SRT、ASS 卡拉 OK 与 LRC。Windows 优先。

One long video into 3-6 vertical shorts, fully local. A Claude Code skill: deterministic ffmpeg/PIL workers plus Claude for jargon correction, clip selection and crops. Captions via PIL because Homebrew ffmpeg has no libass.

KTV/ニコカラ subtitle pipeline: FA-Kara MMS_FA alignment + libass-native ASS layout (furigana on the advance slot, two alternating rows). No lyrics or media.