subtitle-burner
Burn an SRT subtitle file into an MP4 via ffmpeg's subtitles filter (libass). Single-pass re-encode of video; audio copied as-is. CJK-friendly font fallback chain (Microsoft YaHei → SimHei → Arial Unicode MS → Arial). Used by meta-short-drama as the final subtitling step after merge.
Profile →npx skills add opensquilla/opensquilla --skill subtitle-burner --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# subtitle-burner Burns an SRT subtitle stream into an MP4. The video is re-encoded (H.264 + faststart), the audio is copied untouched. libass renders the text per ASS-style override flags, so Chinese / Japanese / Korean characters survive when the host has any of the listed fallback fonts installed (on Windows, Microsoft YaHei and SimHei ship with the OS). ## Inputs (`with:`) | key | required | default | notes | |---|---|---|---| | `input` | yes | — | Source MP4 path. | | `subtitles` | yes | — | `.srt` path (UTF-8). | | `output` | yes | — | Output MP4 path. Parent dir created if missing. | | `font` | no | `Microsoft YaHei,SimHei,Arial Unicode MS,Arial` | libass `FontName` fallback chain. First wins. | | `font_size` | no | `42` | Font size. When `play_res=auto` this is in source-video pixels. | | `margin_v` | no | `80` | Bottom margin in source-video pixels (because `play_res=auto` sets PlayRes to the input W×H). | | `play_res` | no | `auto` | `auto` probes the input MP4 for resolution; or pass `WxH` like `720x1280`. Setting this makes FontSize/MarginV act in source pixels rather than libass's 384×288 default. | | `crf` | no | `20` | x264 CRF (0-51, lower = better quality). | | `pr
- Inputs (with:)
- Output
- Dependencies
- Path-escaping notes
- Style chain
What does the subtitle-burner skill do?
Burn an SRT subtitle file into an MP4 via ffmpeg's subtitles filter (libass). Single-pass re-encode of video; audio copied as-is. CJK-friendly font fallback chain (Microsoft YaHei → SimHei → Arial Unicode MS → Arial). Used by meta-short-drama as the final subtitling step after merge.
How do I install it?
Run `npx skills add opensquilla/opensquilla --skill subtitle-burner --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From opensquilla/opensquilla, a repository with 6,515 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.