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 xuansenpa1/skillrevise --skill ffmpeg-media-infogit clone --depth 1 https://github.com/xuansenpa1/skillreviseWrote 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/xuansenpa1/skillrevise/ffmpeg-media-info)<a href="https://agentmods.dev/skills/xuansenpa1/skillrevise/ffmpeg-media-info"><img src="https://agentmods.dev/badge/skills/xuansenpa1/skillrevise/ffmpeg-media-info/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/xuansenpa1/skillrevise/ffmpeg-media-info"><img src="https://agentmods.dev/badge/skills/xuansenpa1/skillrevise/ffmpeg-media-info.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00021 | $0.00808 |
| Opus 5 | $0.00010 | $0.00404 |
| Sonnet 5 | $0.00004 | $0.00162 |
| Haiku 4.5 | $0.00002 | $0.00081 |
Grade A, and why
FFmpeg Media Info scanned grade A with 0 findings 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 7d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to ffmpeg-media-info — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
FFmpeg Media Info Skill
Extract and analyze media file metadata using ffprobe and ffmpeg.
When to Use
- Get video/audio file properties
- Check codec information
- Verify resolution and bitrate
- Analyze stream details
- Debug media file issues
Basic Info Commands
# Show all file info
ffmpeg -i input.mp4
# JSON format (detailed)
ffprobe -v quiet -print_format json -show_format -show_streams input.mp4
# Simple format
ffprobe -v quiet -print_format json -show_format input.mp4
Duration
# Get duration in seconds
ffprobe -v error -show_entries format=duration \
-of default=noprint_wrappers=1:nokey=1 input.mp4
# Duration with timestamp format
ffprobe -v error -show_entries format=duration \
-of default=noprint_wrappers=1:nokey=1 -sexagesimal input.mp4
Resolution
# Get video resolution
ffprobe -v error -select_streams v:0 \
-show_entries stream=width,height \
-of csv=s=x:p=0 input.mp4
# Get resolution as JSON
ffprobe -v error -select_streams v:0 \
-show_entries stream=width,height \
-of json input.mp4
Bitrate
# Get overall bitrate
ffprobe -v error -show_entries format=bit_rate \
-of default=noprint_wrappers=1:nokey=1 input.mp4
# Get video bitrate
ffprobe -v error -select_streams v:0 \
-show_entries stream=bit_rate \
-of default=noprint_wrappers=1:nokey=1 input.mp4
Codec Information
# Video codec
ffprobe -v error -select_streams v:0 \
-show_entries stream=codec_name,codec_long_name \
-of default=noprint_wrappers=1 input.mp4
# Audio codec
ffprobe -v error -select_streams a:0 \
-show_entries stream=codec_name,codec_long_name \
-of default=noprint_wrappers=1 input.mp4
Sample Rate and Channels
# Audio sample rate
ffprobe -v error -select_streams a:0 \
-show_entries stream=sample_rate \
-of default=noprint_wrappers=1:nokey=1 input.mp4
# Audio channels
ffprobe -v error -select_streams a:0 \
-show_entries stream=channels \
-of default=noprint_wrappers=1:nokey=1 input.mp4
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.
- 7d ago First seen · 124 lines · 21 tokens per session scan A ab9d5c993e64
FFmpeg Media Info is a skill published in the GitHub repository xuansenpa1/skillrevise (56 stars, last pushed 5d ago), licensed MIT. It adds 21 tokens to every session and 808 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to ffmpeg-media-info, differing in 2 lines, and is treated as a copy.
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