Media Analyzer

Analyze local or online audio and video files to extract detailed media metadata, audio features, video frames, and waveform visualizations.

Security Scan

The skill's code and runtime instructions are consistent with a local media analysis tool (ffmpeg/ffprobe-based) and do not request unrelated credentials or network endpoints.

Purpose & Capability

The skill's name and description match the included shell script which uses ffprobe/ffmpeg to extract metadata, frames and waveforms. Minor inconsistency: registry metadata lists no required binaries, but SKILL.md and the script clearly require ffmpeg/ffprobe.

Instruction Scope

SKILL.md and the script operate on local file paths (and will accept URLs only to the extent ffmpeg/ffprobe support them). Instructions do not reference unrelated files, environment variables, or external endpoints, and the script does not attempt to collect or transmit data beyond writing output images/JSON locally.

Install Mechanism

No install spec; the skill is instruction-only with an included shell script. No downloads or archives are fetched at install time.

Credentials

No environment variables, credentials, or config paths are requested. This is proportionate for a local media processing tool.

Persistence & Privilege

always is false, the skill does not request persistent or elevated privileges, nor does it modify other skills or system configuration.

Assessment

This skill appears to be a straightforward ffmpeg/ffprobe-based media analysis helper. Before installing: 1) Be aware you must have ffmpeg/ffprobe installed from a trusted source; the registry metadata didn't declare binaries but SKILL.md and the script require them. 2) The tool operates on local files (batch mode will iterate every file in a directory), so avoid pointing it at directories containing sensitive data unless you trust the outputs. 3) The script parses ffprobe JSON using grep/cut (fragile but not malicious); test on non-critical files first. 4) If you need explicit network behavior (download remote media), confirm with the author whether that is supported and safe. Running the script in a sandbox or with non-sensitive sample files is a good precaution.

音视频内容分析技能 - 分析本地或在线的音视频文件，提取元数据、音频特征、视频帧信息。

功能

• 视频分析: 提取视频元数据（时长、分辨率、帧率、编码格式等）
• 音频分析: 提取音频信息（采样率、声道、编码、时长等）
• 帧提取: 从视频中提取关键帧或指定时间点的截图
• 音频波形: 生成音频波形可视化
• 内容摘要: 快速了解音视频文件的基本信息

触发词

• 内容分析
• 视频分析
• 音频分析
• 媒体信息
• 提取视频帧
• 音视频元数据

使用方式

# 分析视频文件
media-analyzer analyze /path/to/video.mp4

# 分析音频文件
media-analyzer analyze /path/to/audio.mp3

# 提取视频帧（第10秒）
media-analyzer frame /path/to/video.mp4 --timestamp 10

# 提取视频封面
media-analyzer cover /path/to/video.mp4

# 生成音频波形图
media-analyzer waveform /path/to/audio.mp3

# 批量分析目录
media-analyzer batch /path/to/media/folder

依赖

• ffmpeg (必须)
• ffprobe (必须，通常随ffmpeg一起安装)

输出格式

分析结果以结构化JSON格式返回，包含：

• 文件路径
• 媒体类型（视频/音频）
• 时长
• 分辨率（视频）
• 帧率（视频）
• 编码格式
• 比特率
• 音频轨道信息
• 创建时间

示例输出

{
  "file": "/path/to/video.mp4",
  "type": "video",
  "duration": "00:05:30",
  "duration_seconds": 330,
  "resolution": "1920x1080",
  "width": 1920,
  "height": 1080,
  "frame_rate": "30.0",
  "video_codec": "h264",
  "audio_codec": "aac",
  "bitrate": "5000k",
  "created": "2024-01-15 10:30:00"
}