VideoCaptioner Subtitles
WEIFENG2333/VideoCaptioner
Adds subtitles to video with the videocaptioner CLI: transcribes speech, tidies and translates the text, and burns styled subtitles into the video or exports SRT and ASS files.
Renders a source video as a portrait video with the KrillinAI CLI, with short bilingual subtitles or a dubbed audio track, then checks the result.
Install KrillinAI Render Vertical
$ npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install krillinai/OpenCreator krillinai-render-vertical --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/krillinai/OpenCreator.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/krillinai-render-vertical .claude/skills/krillinai-render-vertical && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "krillinai-render-vertical" agent skill from https://github.com/krillinai/OpenCreator/tree/master/skills/krillinai-render-vertical into .claude/skills/krillinai-render-vertical/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "krillinai-render-vertical", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/krillinai/OpenCreator/tree/master/skills/krillinai-render-verticalType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install krillinai/OpenCreator krillinai-render-vertical --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/krillinai/OpenCreator.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/krillinai-render-vertical .agents/skills/krillinai-render-vertical && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "krillinai-render-vertical" agent skill from https://github.com/krillinai/OpenCreator/tree/master/skills/krillinai-render-vertical into .agents/skills/krillinai-render-vertical/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "krillinai-render-vertical", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install krillinai/OpenCreator krillinai-render-vertical --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/krillinai/OpenCreator.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/krillinai-render-vertical .cursor/skills/krillinai-render-vertical && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "krillinai-render-vertical" agent skill from https://github.com/krillinai/OpenCreator/tree/master/skills/krillinai-render-vertical into .cursor/skills/krillinai-render-vertical/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "krillinai-render-vertical", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/krillinai/OpenCreator.git --path skills/krillinai-render-vertical--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install krillinai/OpenCreator krillinai-render-vertical --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/krillinai/OpenCreator.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/krillinai-render-vertical .gemini/skills/krillinai-render-vertical && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "krillinai-render-vertical" agent skill from https://github.com/krillinai/OpenCreator/tree/master/skills/krillinai-render-vertical into .gemini/skills/krillinai-render-vertical/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "krillinai-render-vertical", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install krillinai/OpenCreator krillinai-render-verticalInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/krillinai/OpenCreator.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/krillinai-render-vertical .github/skills/krillinai-render-vertical && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "krillinai-render-vertical" agent skill from https://github.com/krillinai/OpenCreator/tree/master/skills/krillinai-render-vertical into .github/skills/krillinai-render-vertical/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "krillinai-render-vertical", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install krillinai/OpenCreator krillinai-render-vertical --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/krillinai/OpenCreator.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/krillinai-render-vertical .opencode/skills/krillinai-render-vertical && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "krillinai-render-vertical" agent skill from https://github.com/krillinai/OpenCreator/tree/master/skills/krillinai-render-vertical into .opencode/skills/krillinai-render-vertical/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "krillinai-render-vertical", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
krillinai-render-vertical- GitHub stars
- 13k
- Token cost
- ~527 tokens
- SKILL.md length
- 142 words
- Files
- 1
- Skills in repo
- 8
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Renders a source video as a portrait video with the KrillinAI CLI, with short bilingual subtitles or a dubbed audio track, then checks the result.
- Converting a landscape video to portrait with short bilingual subtitles
- SKILL.md covers Bilingual Short-Subtitle Video, Dubbed Vertical Video, Subtitle Behavior and Outputs, plus 1 more section
- Calls rg and ffmpeg
- Rendering a dubbed vertical video from a clip that already has a synthesized voice track
What it does
This skill drives the render-vertical command of the KrillinAI command-line tool. It covers two flows: converting a source video to portrait format with short English and Chinese subtitles, and rendering a vertical video that uses a dubbed track by passing the dubbed option. Both run from the KrillinAI working directory against files in a work folder, and the skill sends you to the krillinai-cli skill's contract file for the binary location, configuration and JSON behavior.
Subtitle handling is spelled out. Chinese text is word-segmented before lines are decided, Chinese characters count as double width when lines are split, and long Chinese subtitles are spread over several timed Dialogue entries instead of being stacked with line-break codes. The aim is one English line plus one Chinese line on screen.
The outputs are transferred_vertical_video.mp4, vertical_bilingual.mp4 and vertical_dubbed.mp4. To verify, you search the formatted .ass file for stray line breaks, pull preview frames with ffmpeg, and require terminal JSON reporting ok, valid video and audio streams, readable subtitles and no garbled titles.
When your agent uses it
- Converting a landscape video to portrait with short bilingual subtitles
- Rendering a dubbed vertical video from a clip that already has a synthesized voice track
- Checking that vertical subtitles stay readable and do not wrap badly
- Reviewing preview frames of a rendered portrait video for garbled titles
Example prompts
- “Render ./work/origin_video.mp4 as a vertical video with short English and Chinese subtitles.”
- “Make the dubbed vertical version from video_with_tts.mp4 and tell me where the final file landed.”
- “Check the vertical bilingual video for subtitles that wrap badly or show garbled titles.”
Requirements
- The KrillinAI CLI binary and its working directory
- A source video in the work folder, such as origin_video.mp4
- ffmpeg for the preview-frame check
What it can do on your machine
Read from SKILL.md and the folder at commit 837dbb4. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
rgffmpeg
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
KrillinAI Render Vertical loads about 527 tokens when it runs. Until then it costs about 62 tokens; SKILL.md has 142 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from krillinai/OpenCreator at commit 837dbb4, republished under its Apache-2.0 licence (© krillinai). 142 words, ~527 tokens.
Download SKILL.mdSave it as
.claude/skills/krillinai-render-vertical/SKILL.md (or your agent's skills folder).- name
- krillinai-render-vertical
- description
- Use when rendering portrait videos with KrillinAI CLI, including converting source video to vertical format, adding short bilingual subtitles, rendering dubbed vertical videos, and checking vertical subtitle readability.
KrillinAI Render Vertical
Use this skill for render-vertical. Read skills/krillinai-cli/references/cli-contract.md first for binary location, execution working directory, configuration, and JSON behavior.
Bilingual Short-Subtitle Video
(cd "$KRILLINAI_CWD" && "$KRILLINAI_CLI" render-vertical \
--workdir "$WORKDIR" \
--video "$WORKDIR/origin_video.mp4" \
--subtitle "$WORKDIR/short_origin_mixed_srt.srt" \
--major-title "今日话题" \
--minor-title "AI Video")Dubbed Vertical Video
(cd "$KRILLINAI_CWD" && "$KRILLINAI_CLI" render-vertical \
--workdir "$WORKDIR" \
--video "$WORKDIR/video_with_tts.mp4" \
--subtitle "$WORKDIR/target_language_srt.srt" \
--dubbed \
--major-title "今日话题" \
--minor-title "AI Video")Subtitle Behavior
The Go renderer follows the good behavior from vertical_srt.py:
- Chinese uses word segmentation before line decisions.
- Display width is used for line splitting: Chinese counts as width 2, other text as width 1.
- Long Chinese subtitles are split across time into multiple
Dialogueentries instead of stacked with\N. - The goal is to keep the screen to one English line plus one Chinese line when possible.
Outputs
transferred_vertical_video.mp4: source converted to portrait format.vertical_bilingual.mp4: default final vertical video.vertical_dubbed.mp4: final video with--dubbed.- Final variants are reported through the manifest key
vertical_video.
Verification
Use text and visual checks:
rg -n -F '\\N' "$WORKDIR/formatted_vertical_bilingual.ass"
ffmpeg -y -ss 00:00:01 -i "$WORKDIR/vertical_bilingual.mp4" \
-frames:v 1 "$WORKDIR/vertical_preview_%03d.jpg"Also require terminal JSON with "ok": true, valid video/audio streams, readable subtitles, and non-garbled titles.
© krillinai, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/krillinai-render-vertical of krillinai/OpenCreator.
Open the folder on GitHubat commit 837dbb4
Compare with similar skills
KrillinAI Render Vertical next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| KrillinAI Render Vertical this skillkrillinai/OpenCreator | 13k | — | ~527 | Automated safety check: Pass | Apache-2.0 | |
| VideoCaptioner SubtitlesWEIFENG2333/VideoCaptioner | 16k | — | ~1.7k | Automated safety check: Pass | GPL-3.0 | |
| Vox DirectorAlisa0808/vox-director | 2.2k | — | ~5.6k | Automated safety check: Pass | MIT | |
| Video Podcast Makerdtsola/xiaoyaosearch | 1k | — | ~3.4k | Automated safety check: Pass | MIT | |
| AI Presenter VideoNousResearch/hermes-agent | 253k | — | ~2.3k | Automated safety check: Pass | MIT | |
| Explain Videolimin112/min-skill | 454 | — | ~2.4k | Automated safety check: Pass | None |
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Generates target-language dubbing audio from an SRT subtitle file with the KrillinAI CLI, and optionally a dubbed video.
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Related
Works with
Categories
Questions about KrillinAI Render Vertical
What does KrillinAI Render Vertical do?
Renders a source video as a portrait video with the KrillinAI CLI, with short bilingual subtitles or a dubbed audio track, then checks the result. This skill drives the render-vertical command of the KrillinAI command-line tool. It covers two flows: converting a source video to portrait format with short English and Chinese subtitles, and rendering a vertical video that uses a dubbed track by passing the dubbed option.
When should I use KrillinAI Render Vertical?
KrillinAI Render Vertical fits situations like: converting a landscape video to portrait with short bilingual subtitles; rendering a dubbed vertical video from a clip that already has a synthesized voice track; checking that vertical subtitles stay readable and do not wrap badly; reviewing preview frames of a rendered portrait video for garbled titles.
How do I install KrillinAI Render Vertical in Claude Code?
Run `npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a claude-code`. Or copy the skill folder (skills/krillinai-render-vertical in krillinai/OpenCreator) into .claude/skills/krillinai-render-vertical in your project. Claude Code loads it when a task matches its description.
How do I install KrillinAI Render Vertical in Codex?
Run `npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a codex`. Or copy the skill folder (skills/krillinai-render-vertical in krillinai/OpenCreator) into .agents/skills/krillinai-render-vertical in your project. Codex loads it when a task matches its description.
Can I use KrillinAI Render Vertical in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add krillinai/OpenCreator --skill krillinai-render-vertical -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/krillinai-render-vertical, .gemini/skills/krillinai-render-vertical, .github/skills/krillinai-render-vertical and .opencode/skills/krillinai-render-vertical in your project.
What does KrillinAI Render Vertical need to run?
Going by SKILL.md and its folder, KrillinAI Render Vertical needs the command-line tools its instructions call (rg and ffmpeg). Our summary lists: The KrillinAI CLI binary and its working directory; A source video in the work folder, such as origin_video.mp4; ffmpeg for the preview-frame check.
Does KrillinAI Render Vertical access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is KrillinAI Render Vertical safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does KrillinAI Render Vertical use?
KrillinAI Render Vertical is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does KrillinAI Render Vertical use?
About 527 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to KrillinAI Render Vertical?
Skills that share tags, products or a category with KrillinAI Render Vertical: VideoCaptioner Subtitles (WEIFENG2333/VideoCaptioner, 16k stars), Vox Director (Alisa0808/vox-director, 2.2k stars), Video Podcast Maker (dtsola/xiaoyaosearch, 1k stars) and AI Presenter Video (NousResearch/hermes-agent, 253k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains KrillinAI Render Vertical?
krillinai (a GitHub user) maintains it in krillinai/OpenCreator, which has 12,682 GitHub stars. The repository holds 8 skills in this directory. The repository was last updated on October 11, 2026.
Source: krillinai/OpenCreator on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.