提取视频中的图像。 参数： video_path(str) - 视频路径。 fps(int) - 每多少秒抽一帧，如果传0，代表全部都抽,传1，代表每一秒抽1帧。 output_folder(str) - 把图片输出到哪个目录 format(int) - 抽取的图片格式，0：代表png 1:jpg 2:webp total_frames(int) - 最多抽取多少张，0代表不限制
AI agents use extract_frames_from_video to create or update resources in FFmpeg-MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your FFmpeg-MCP Server environment.
This tool reads a video file and writes extracted image frames to an output folder on disk. It creates new files (PNG/JPG/WEBP images) reversibly — the output files can be deleted — so it falls under Write rather than Read. It does not execute arbitrary code or destroy existing data, making Write the most appropriate category.
From the tool's definition 提取视频中的图像 (Extract images from video); output_folder - 把图片输出到哪个目录 (output images to a directory)
Documented attack patterns abuse exactly the kind of access extract_frames_from_video gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FFmpeg-MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for extract_frames_from_video:
{
"version": "1",
"default": "deny",
"tools": {
"extract_frames_from_video": {
"limits": [
{
"counter": "extract_frames_from_video_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}extract_frames_from_video stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
提取视频中的图像。 参数： video_path(str) - 视频路径。 fps(int) - 每多少秒抽一帧，如果传0，代表全部都抽,传1，代表每一秒抽1帧。 output_folder(str) - 把图片输出到哪个目录 format(int) - 抽取的图片格式，0：代表png 1:jpg 2:webp total_frames(int) - 最多抽取多少张，0代表不限制. It is categorised as a Write tool in the FFmpeg-MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the FFmpeg-MCP Server MCP server in PolicyLayer and add a rule for extract_frames_from_video: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches FFmpeg-MCP Server. Nothing to install.
extract_frames_from_video is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the extract_frames_from_video rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for extract_frames_from_video. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
extract_frames_from_video is provided by the FFmpeg-MCP Server MCP server (video-creator/ffmpeg-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 8 FFmpeg-MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
8 FFmpeg-MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.