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Analyze media file properties - duration, resolution, bitrate, codecs, and stream information
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
SkillsBench contribution workflow. Use when: (1) Creating benchmark tasks, (2) Understanding repo structure, (3) Preparing PRs for task submission.
SkillsBench task authoring — walk a contributor from idea to submission-ready task following CONTRIBUTING.md and the task-implementation rubric. Use when the user wants to create a new SkillsBench task, scaffold a task from an existing workflow (notebook, Excel workbook, document, dataset), convert a prompt or a benchmark item into a SkillsBench task, write skills for a task, or prepare a SkillsBench PR. Pairs with `task-review` (run that as a self-check before submitting).
SkillsBench task PR review — classifies the task track (standard / research / multimodal), runs static policy checks against the track-specific rubric, benchmarks the task across oracle plus Claude and Codex (with and without skills), audits trajectories for cheating and skill invocation, and produces a `pr-N-task-timestamp-run.txt` review report alongside a `prN.zip` bundle of trajectories. Use when reviewing a SkillsBench task PR (by number, branch, or local task path), when the user asks to review a task, run benchmarks on a PR, audit a submission, classify a task as research or multimodal track, or prepare a comment to post on a SkillsBench PR.
Methodology for clause-by-clause review of a contract against a structured deviation policy ("playbook"). Covers how to walk a playbook, locate the matching provision in the contract, apply rule types (max-value, must-be-present, must-be-absent, acceptable-set, must-have-feature), classify the result (ok / risk / reject), choose the prescribed action, and ground each finding in a verbatim excerpt. Use whenever reviewing any contract — NDA, MSA, vendor DD questionnaire, lease, DPA — against a structured rules-based playbook.
Reference for the standard clauses found in commercial non-disclosure agreements (mutual and one-way) — what each clause does, the surface forms it appears in, and how to recognise it in unfamiliar drafting. Use when reviewing, comparing, or extracting provisions from any confidentiality / NDA / mutual NDA / standstill-and-confidentiality agreement.
Read Microsoft Excel (.xlsx) files robustly with `openpyxl` (or `pandas`). Covers multi-sheet workbooks, header rows, empty cells, merged cells, comma-separated list cells, and converting a sheet to a list-of-dicts the rest of your code can consume. Use when a task input or reference document is an `.xlsx` file rather than JSON/CSV.
| name | ffmpeg-media-info |
| description | Analyze media file properties - duration, resolution, bitrate, codecs, and stream information |
Extract and analyze media file metadata using ffprobe and ffmpeg.
# 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
# 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
# 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
# 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
# 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
# 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
# Count video streams
ffprobe -v error -select_streams v -show_entries stream=index \
-of csv=p=0 input.mp4 | wc -l
# Count audio streams
ffprobe -v error -select_streams a -show_entries stream=index \
-of csv=p=0 input.mp4 | wc -l
# Get frame rate
ffprobe -v error -select_streams v:0 \
-show_entries stream=r_frame_rate \
-of default=noprint_wrappers=1:nokey=1 input.mp4
-v error to suppress warnings-of json for structured output-select_streams to target specific streams (v:0 for first video, a:0 for first audio)