bytedance/agentkit-samples is a collection of examples and tutorials for Volcengine AgentKit, an AI-agent development platform for building, deploying, and operating agent applications. Developers use the samples to learn agent creation, multi-agent collaboration, memory, retrieval, MCP integrations, media generation, customer service, and other workflows. The catalogue skills provide agent workflows based on these examples.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add bytedance/agentkit-samples --skill byted-util-video-editorgit clone --depth 1 https://github.com/bytedance/agentkit-samplesWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/bytedance/agentkit-samples/byted-util-video-editor)<a href="https://agentmods.dev/skills/bytedance/agentkit-samples/byted-util-video-editor"><img src="https://agentmods.dev/badge/skills/bytedance/agentkit-samples/byted-util-video-editor.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Privilege Escalation · line 71 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00050 | $0.02514 |
| Opus 5 | $0.00025 | $0.01257 |
| Sonnet 5 | $0.00010 | $0.00503 |
| Haiku 4.5 | $0.00005 | $0.00251 |
Grade B, and why
byted-util-video-editor scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt install ffmpeg How it starts
The opening of the file, as written. The whole thing — 262 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Video Editor - 视频编辑器
适用场景
当需要进行视频后期处理时使用此技能，包括：
- 合并多个视频：将多个分镜视频合成一个完整视频
- 添加音频：为视频添加旁白、背景音乐等音频轨道
- 合并音频：将多个音频文件按时间轴合并成一个完整音频
- 生成字幕：生成 SRT 格式的字幕文件
- 烧录字幕：将字幕硬编码到视频中
- 视频制作：短视频、宣传片、教学视频的后期合成
功能特性
1. 合并多个视频
- 支持 2+ 个视频文件拼接
- 自动处理视频编码和格式转换
- 保持原始视频质量
- 自动保留原始视频的背景音乐
2. 添加音频轨道
- 支持添加旁白配音
- 支持添加背景音乐
- 可调节音频音量（0.0-2.0 倍）
- 可调节原始视频背景音乐音量（0.0-2.0 倍）
- 背景音乐和对白音频自动混合
3. 合并多个音频
- 支持将多个音频文件按时间轴合并成一个完整音频
- 每个音频可以指定自己的开始时间（秒）
- 使用 amix 滤镜平滑混合音频
4. 生成字幕
- 支持生成标准 SRT 格式字幕文件
- 支持多段字幕，每段有独立的开始/结束时间
- UTF-8 编码，支持中文字幕
5. 烧录字幕
- 将 SRT 字幕硬编码到视频中
- 需要 ffmpeg 编译时包含 libass（subtitles 滤镜）支持
- 如当前环境不支持，可使用其他视频编辑工具（如剪映等）烧录字幕
6. 灵活的操作模式
- merge 模式：合并多个视频（可同时添加音频）
- add-audio 模式：为现有视频添加音频
- merge-audios 模式：合并多个音频文件
- generate-srt 模式：生成 SRT 字幕文件
- burn-subtitles 模式：烧录字幕到视频
系统要求
安装 ffmpeg
Ubuntu/Debian：
sudo apt install ffmpeg
macOS：
brew install ffmpeg
验证安装：
ffmpeg -version
使用步骤
模式 1：合并多个视频
基本用法：
python scripts/video_editor.py output.mp4 --videos video1.mp4 video2.mp4 video3.mp4
带音频合并：
python scripts/video_editor.py output.mp4 --videos v1.mp4 v2.mp4 v3.mp4 --audio narration.mp3
调整音频音量：
# 对白音频音量为 0.8 倍（降低 20%）
python scripts/video_editor.py output.mp4 --videos v1.mp4 v2.mp4 --audio dialogue.mp3 --volume 0.8
# 对白音频音量为 1.5 倍（提高 50%）
python scripts/video_editor.py output.mp4 --videos v1.mp4 v2.mp4 --audio dialogue.mp3 --volume 1.5
# 同时调整背景音乐音量为 0.5 倍
python scripts/video_editor.py output.mp4 --videos v1.mp4 v2.mp4 --audio dialogue.mp3 --volume 0.8 --bg-volume 0.5
模式 2：为现有视频添加音频
基本用法：
python scripts/video_editor.py output.mp4 --video input.mp4 --audio narration.mp3 --mode add-audio
调节音量：
python scripts/video_editor.py output.mp4 --video input.mp4 --audio background.mp3 --volume 0.5 --mode add-audio
模式 3：合并多个音频文件
基本用法：
python scripts/video_editor.py output.mp3 --audios audio1.mp3,audio2.mp3 --start-times 0,5 --mode merge-audios
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 4d ago First seen · 262 lines · 50 tokens per session scan B 5c85cf6051b9
byted-util-video-editor is a skill published in the GitHub repository bytedance/agentkit-samples (450 stars, last pushed 4d ago), licensed Apache-2.0. It adds 50 tokens to every session and 2,514 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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