av-studio

Audio/video studio production — multi-track editing, color grading, motion graphics, compositing, live streaming, screen recording, YouTube publishing.

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Dépôt: Tibsfox/gsd-skill-creator
Dernière activité de la source: 14 avril 2026 à 07:57
Langue détectée de SKILL.md: anglais
Étoiles: 69
Forks: 9

Options d'installation

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npx skills add https://github.com/Tibsfox/gsd-skill-creator --skill av-studio

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SKILL.md

Instructions source · Aperçu en lecture seule

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goal-ambiguity-gate

Use the moment a request is underspecified and you are about to act on an ASSUMED goal. Enumerate the candidate goals the request could mean, project the action or artifact each one implies, and check whether they diverge: if two or more plausible goals lead to materially different actions or artifacts, ask exactly ONE targeted clarifying question; otherwise proceed on the most-likely goal and state the assumption in one line. Clarification is an evidence-producing action, not a delay — but one question, never an interrogation. Distinct from gsd-spec-phase (GSD-phase-bound, emits a heavy SPEC.md) and intent-router (fetch strategy, not goal disambiguation). Backed by agent goal-state inference (arxiv 2606.16813v1). Triggers on acting under an assumed goal when the request admits more than one materially different reading.

2026-07-19

memory-hubness-gate

Use at write time to vector/embedding memory — Grove content-addressed insertion, chroma/pgvector upserts, memory-consolidation promoting session traces to MEMORY.md, or embedding externally-ingested content. Scores each candidate record against a fixed panel of sentinel queries and quarantines any record that would become the nearest neighbor of too many unrelated queries — a hub — whether from adversarial poisoning or accidental over-generality. This is the memory-record-side sibling of skill-injection-guardian (file-side) and the write-side complement of memory-use-warrant (read-side). Quarantine, never silently drop; a human reviews. Backed by the admission-time hubness gate (arxiv 2606.19692v1). Triggers on inserting into vector memory, consolidating memory, and embedding stranger content.

2026-07-19

memory-use-warrant

Run this appropriateness check the moment you are about to integrate a retrieved long-term memory — a Grove content-addressed hit, a chroma/pgvector neighbour, a memory-consolidation digest, or a MEMORY.md line — into a response, especially anything touching private origins, Fox Companies IP, credentials, or Center Camp / consent-governed content. It answers a question intent-router never asks: not WHAT to fetch or HOW, but WHETHER a correctly-retrieved item should reach output. Relevance is not appropriateness — a perfect similarity match can still be a boundary violation. Default is FAIL-CLOSED: if in-context authorization is uncertain, the memory may inform behaviour but must not be surfaced. Backed by RBI-Eval (arxiv 2606.06055v1). Triggers on surfacing recalled sensitive memory into a response.

2026-07-19

Tout voir dans ce dépôt

AV Studio Production Skill

Combines ffmpeg-media (codecs/formats), audio-engineering (mastering/mixing), and gource-visualizer (repo visualization) into a unified production toolkit for video content creation, live streaming, and multimedia publishing.

Production Templates

YouTube Video Pipeline

# 1. Screen recording (with audio)
ffmpeg -f x11grab -video_size 1920x1080 -framerate 30 -i :0.0 \
  -f pulse -i default \
  -c:v libx264 -preset ultrafast -crf 18 \
  -c:a aac -b:a 192k \
  raw_recording.mkv

# 2. Trim to content
ffmpeg -ss 00:00:05 -i raw_recording.mkv -to 00:45:00 -c copy trimmed.mkv

# 3. Add intro + outro
cat > concat.txt << EOF
file 'intro.mp4'
file 'trimmed.mkv'
file 'outro.mp4'
EOF
ffmpeg -f concat -safe 0 -i concat.txt -c:v libx264 -c:a aac assembled.mp4

# 4. Color grade + normalize audio
ffmpeg -i assembled.mp4 \
  -vf "eq=brightness=0.04:contrast=1.1:saturation=1.15,unsharp=5:5:0.5" \
  -af "loudnorm=I=-14:TP=-1:LRA=11" \
  -c:v libx264 -preset medium -crf 20 -pix_fmt yuv420p \
  -c:a aac -b:a 192k \
  -movflags +faststart \
  final.mp4

# 5. Generate thumbnail
ffmpeg -i final.mp4 -ss 00:00:30 -frames:v 1 \
  -vf "scale=1280:720" thumbnail.jpg

Presentation Recording

# Record screen + webcam PiP
ffmpeg -f x11grab -video_size 1920x1080 -framerate 30 -i :0.0 \
  -f v4l2 -video_size 320x240 -framerate 30 -i /dev/video0 \
  -f pulse -i default \
  -filter_complex "[0:v][1:v]overlay=W-w-20:H-h-20[out]" \
  -map "[out]" -map 2:a \
  -c:v libx264 -preset fast -crf 22 \
  -c:a aac -b:a 128k \
  presentation.mp4

Tutorial / Screencast

# Record with mouse cursor highlight
ffmpeg -f x11grab -video_size 1920x1080 -framerate 30 \
  -draw_mouse 1 -i :0.0 \
  -f pulse -i default \
  -c:v libx264 -preset fast -crf 20 \
  -c:a aac -b:a 128k \
  tutorial.mp4

# Add chapter markers (for YouTube)
ffmpeg -i tutorial.mp4 -c copy \
  -metadata:c:0 title="Introduction" \
  -metadata:c:0 timebase=1/1000 \
  chaptered.mp4

Color Grading

LUT Application

# Apply a 3D LUT (cube format)
ffmpeg -i input.mp4 -vf "lut3d=cinematic.cube" graded.mp4

# Apply with blend (50% strength)
ffmpeg -i input.mp4 -vf "split[a][b];[b]lut3d=cinematic.cube[c];[a][c]blend=all_opacity=0.5" graded.mp4

Manual Color Correction

# Lift/Gamma/Gain (shadows/midtones/highlights)
ffmpeg -i input.mp4 -vf "\
  colorbalance=rs=0.1:gs=-0.05:bs=0.15:\
  rm=0:gm=0:bm=0:\
  rh=-0.05:gh=0:bh=0.05" \
  corrected.mp4

# White balance correction (warm up)
ffmpeg -i input.mp4 -vf "colortemperature=temperature=6500" warm.mp4

# Curves (S-curve for contrast)
ffmpeg -i input.mp4 -vf "curves=master='0/0 0.25/0.15 0.5/0.5 0.75/0.85 1/1'" contrast.mp4

Motion Graphics

Text Animations

# Fade-in title card (2 seconds)
ffmpeg -i input.mp4 -vf "\
  drawtext=text='Episode Title':\
  fontsize=72:fontcolor=white@0.0:\
  x=(w-text_w)/2:y=(h-text_h)/2:\
  alpha='if(lt(t,1),t,if(lt(t,3),1,if(lt(t,4),4-t,0)))'" \
  titled.mp4

# Lower third (name + title)
ffmpeg -i input.mp4 -vf "\
  drawbox=x=0:y=ih-120:w=500:h=120:color=black@0.7:t=fill,\
  drawtext=text='Jane Doe':fontsize=36:fontcolor=white:x=20:y=ih-110,\
  drawtext=text='Software Engineer':fontsize=24:fontcolor=0xcccccc:x=20:y=ih-65" \
  lower_third.mp4

Transitions

# Crossfade between two clips (1 second overlap)
ffmpeg -i clip1.mp4 -i clip2.mp4 \
  -filter_complex "\
  [0:v]trim=0:10,setpts=PTS-STARTPTS[v0];\
  [1:v]trim=0:10,setpts=PTS-STARTPTS[v1];\
  [v0][v1]xfade=transition=fade:duration=1:offset=9[vout];\
  [0:a]atrim=0:10,asetpts=PTS-STARTPTS[a0];\
  [1:a]atrim=0:10,asetpts=PTS-STARTPTS[a1];\
  [a0][a1]acrossfade=d=1[aout]" \
  -map "[vout]" -map "[aout]" crossfade.mp4

# Available xfade transitions:
# fade, wipeleft, wiperight, wipeup, wipedown, slideleft, slideright,
# slideup, slidedown, circlecrop, circleopen, circleclose, dissolve,
# pixelize, diagtl, diagtr, diagbl, diagbr, hlslice, hrslice,
# vuslice, vdslice, hblur, fadegrays, squeezeh, squeezev

Picture-in-Picture

# Webcam overlay (bottom right, 25% size)
ffmpeg -i screen.mp4 -i webcam.mp4 \
  -filter_complex "\
  [1:v]scale=iw/4:ih/4[pip];\
  [0:v][pip]overlay=W-w-20:H-h-20" \
  -c:v libx264 -crf 22 -c:a aac pip.mp4

# Animated PiP (slides in from right)
ffmpeg -i screen.mp4 -i webcam.mp4 \
  -filter_complex "\
  [1:v]scale=320:240[pip];\
  [0:v][pip]overlay=x='if(lt(t,1),W,W-w-20)':y=H-h-20" \
  animated_pip.mp4

Video Stabilization

# Two-pass stabilization with vidstab
# Pass 1: analyze
ffmpeg -i shaky.mp4 -vf vidstabdetect=shakiness=5:accuracy=15 -f null -
# Pass 2: apply
ffmpeg -i shaky.mp4 -vf vidstabtransform=smoothing=10:input=transforms.trf stabilized.mp4

Timelapse / Slow Motion

# Timelapse from photos (one frame per image)
ffmpeg -framerate 30 -pattern_type glob -i 'photos/*.jpg' \
  -c:v libx264 -crf 18 -pix_fmt yuv420p timelapse.mp4

# Speed ramp (normal → 4x → normal)
ffmpeg -i input.mp4 -filter_complex "\
  [0:v]trim=0:10,setpts=PTS-STARTPTS[v1];\
  [0:v]trim=10:30,setpts=0.25*(PTS-STARTPTS)[v2];\
  [0:v]trim=30:40,setpts=PTS-STARTPTS[v3];\
  [v1][v2][v3]concat=n=3:v=1:a=0[out]" \
  -map "[out]" speed_ramp.mp4

# Smooth slow motion (frame interpolation with minterpolate)
ffmpeg -i input.mp4 -vf "minterpolate=fps=120:mi_mode=mci:mc_mode=aobmc:vsbmc=1" \
  -r 30 slowmo.mp4

Live Streaming

# Stream to YouTube via RTMP
ffmpeg -f x11grab -video_size 1920x1080 -framerate 30 -i :0.0 \
  -f pulse -i default \
  -c:v libx264 -preset veryfast -maxrate 4500k -bufsize 9000k \
  -pix_fmt yuv420p -g 60 \
  -c:a aac -b:a 128k -ar 44100 \
  -f flv "rtmp://a.rtmp.youtube.com/live2/YOUR_STREAM_KEY"

# Stream to Twitch
ffmpeg -f x11grab -video_size 1920x1080 -framerate 30 -i :0.0 \
  -f pulse -i default \
  -c:v libx264 -preset veryfast -maxrate 6000k -bufsize 12000k \
  -pix_fmt yuv420p -g 60 \
  -c:a aac -b:a 160k -ar 44100 \
  -f flv "rtmp://live.twitch.tv/app/YOUR_STREAM_KEY"

Aspect Ratios

Format	Ratio	Resolution	Use
Widescreen	16:9	1920x1080	YouTube, presentations
Vertical	9:16	1080x1920	TikTok, Reels, Shorts
Square	1:1	1080x1080	Instagram feed
Ultrawide	21:9	2560x1080	Cinematic
Classic	4:3	1440x1080	Legacy, some webcams
Cinema	2.39:1	2048x858	Film standard

Letterboxing / Pillarboxing

# Add letterbox (16:9 → 21:9 cinematic bars)
ffmpeg -i input.mp4 -vf "pad=iw:iw*9/21:(ow-iw)/2:(oh-ih)/2:black" cinematic.mp4

# Convert vertical to horizontal (blur background)
ffmpeg -i vertical.mp4 -filter_complex "\
  [0:v]scale=1920:1080:force_original_aspect_ratio=increase,crop=1920:1080,boxblur=20[bg];\
  [0:v]scale=-1:1080[fg];\
  [bg][fg]overlay=(W-w)/2:0" \
  horizontal_blurbg.mp4

YouTube Publishing Checklist

Video specs: H.264, 1080p+, -14 LUFS audio, thumbnail 1280x720
faststart: -movflags +faststart for progressive download
Pixel format: -pix_fmt yuv420p for compatibility
Chapters: Include in description (00:00 Intro, 01:30 Topic, etc.)
Thumbnail: High-contrast, readable text at small sizes, faces perform well
Subtitles: SRT file or burn-in with drawtext filter
End screen: Last 20 seconds reserved for cards/end screen elements

Related Skills & Agents

Asset	Role
`ffmpeg-media` skill	Codec/format foundation
`audio-engineering` skill	Audio mastering/mixing
`ffmpeg-processor` agent	Format conversion
`audio-engineer` agent	Audio mastering
`podcast-producer` agent	Podcast pipeline
`music-analyzer` agent	Audio analysis
`gource-visualizer` skill	Repository visualization → video

When This Skill Activates

Video editing, trimming, concatenation with transitions
Color grading and correction
Motion graphics, titles, lower thirds
Screen recording and screencasts
Live streaming (YouTube, Twitch)
Picture-in-picture compositing
Video stabilization
Timelapse and slow motion
Aspect ratio conversion
YouTube video publishing workflow

name	av-studio
description	Audio/video studio production — multi-track editing, color grading, motion graphics, compositing, live streaming, screen recording, YouTube publishing.
activationKeywords	["video editing","color grading","color correction","motion graphics","compositing","green screen","chroma key","screen recording","screencast","OBS","streaming","live stream","YouTube upload","YouTube publish","render","timeline","keyframe","transition","fade","crossfade","title card","lower third","intro","outro","B-roll","cutaway","jump cut","montage","timelapse","slow motion","stabilization","aspect ratio","letterbox","pip","picture in picture"]
type	skill
category	media
status	stable
origin	tibsfox

av-studio

Informations de source

Options d'installation

Vérifiez les fichiers source

Plus depuis ce dépôt

Plus depuis ce dépôt

AV Studio Production Skill

Production Templates

YouTube Video Pipeline

Presentation Recording

Tutorial / Screencast

Color Grading

LUT Application

Manual Color Correction

Motion Graphics

Text Animations

Transitions

Picture-in-Picture

Video Stabilization

Timelapse / Slow Motion

Live Streaming

Aspect Ratios

Letterboxing / Pillarboxing

YouTube Publishing Checklist

Related Skills & Agents

When This Skill Activates