Complete shape and graphics overlay system. PROACTIVELY activate for: (1) Drawing rectangles (drawbox), (2) Grid overlays (drawgrid), (3) Circles and ellipses (geq), (4) Image watermarks and logos, (5) Lower third graphics, (6) Progress bars and indicators, (7) Animated overlays, (8) Blend modes and compositing, (9) Safe area guides, (10) Generated patterns (gradients, noise, checkerboards). Provides: Filter syntax reference, position expressions, color format guide, blend mode examples, performance optimization tips. Ensures: Professional graphics overlays and visual effects on video.
/plugin marketplace add JosiahSiegel/claude-plugin-marketplace/plugin install ffmpeg-master@claude-plugin-marketplaceThis skill inherits all available tools. When active, it can use any tool Claude has access to.
MANDATORY: Always Use Backslashes on Windows for File Paths
When using Edit or Write tools on Windows, you MUST use backslashes (\) in file paths, NOT forward slashes (/).
NEVER create new documentation files unless explicitly requested by the user.
| Shape | Filter | Command Example |
|---|---|---|
| Rectangle | drawbox | -vf "drawbox=x=100:y=100:w=200:h=150:color=red:t=fill" |
| Grid | drawgrid | -vf "drawgrid=w=iw/3:h=ih/3:t=2:color=white" |
| Text | drawtext | -vf "drawtext=text='Hello':x=10:y=10:fontsize=24" |
| Watermark | overlay | [0:v][1:v]overlay=W-w-10:10 |
| Position | Expression |
|---|---|
| Centered | x=(iw-200)/2:y=(ih-150)/2 |
| Bottom-right | x=iw-w-10:y=ih-h-10 |
| Full-width bar | x=0:y=0:w=iw:h=80 |
Use for graphics and shape overlays:
Complete guide to drawing shapes, graphics overlays, and geometric patterns using FFmpeg.
| Filter | Purpose | Shapes |
|---|---|---|
| drawbox | Draw rectangles/boxes | Rectangles, squares |
| drawgrid | Draw grid patterns | Lines, grids |
| drawtext | Draw text | Text, numbers |
| geq | Geometric equation | Any (via expressions) |
| overlay | Composite images | Any image/shape |
| blend | Blend layers | Composite effects |
# Draw red box
ffmpeg -i video.mp4 \
-vf "drawbox=x=100:y=100:w=200:h=150:color=red:t=3" \
output.mp4
# Filled rectangle
ffmpeg -i video.mp4 \
-vf "drawbox=x=100:y=100:w=200:h=150:color=red:t=fill" \
output.mp4
# Semi-transparent rectangle
ffmpeg -i video.mp4 \
-vf "drawbox=x=100:y=100:w=200:h=150:color=red@0.5:t=fill" \
output.mp4
# Centered box
ffmpeg -i video.mp4 \
-vf "drawbox=x=(iw-200)/2:y=(ih-150)/2:w=200:h=150:color=blue:t=fill" \
output.mp4
# Box at bottom right
ffmpeg -i video.mp4 \
-vf "drawbox=x=iw-210:y=ih-160:w=200:h=150:color=green:t=3" \
output.mp4
# Full-width bar at top
ffmpeg -i video.mp4 \
-vf "drawbox=x=0:y=0:w=iw:h=80:color=black@0.7:t=fill" \
output.mp4
# Full-width bar at bottom
ffmpeg -i video.mp4 \
-vf "drawbox=x=0:y=ih-80:w=iw:h=80:color=black@0.7:t=fill" \
output.mp4
# Add letterbox bars (16:9 to 2.35:1)
ffmpeg -i video_16x9.mp4 \
-vf "drawbox=x=0:y=0:w=iw:h=ih*0.12:color=black:t=fill,\
drawbox=x=0:y=ih-ih*0.12:w=iw:h=ih*0.12:color=black:t=fill" \
letterbox.mp4
# Add pillarbox bars (4:3 in 16:9 frame)
ffmpeg -i video_4x3.mp4 \
-vf "scale=-1:1080,pad=1920:1080:(ow-iw)/2:0:black" \
pillarbox.mp4
# Growing box
ffmpeg -i video.mp4 \
-vf "drawbox=x=100:y=100:w='min(t*50,300)':h='min(t*30,200)':color=red:t=fill" \
growing_box.mp4
# Moving box
ffmpeg -i video.mp4 \
-vf "drawbox=x='mod(t*100,iw)':y=100:w=100:h=100:color=blue:t=fill" \
moving_box.mp4
# Pulsing opacity
ffmpeg -i video.mp4 \
-vf "drawbox=x=100:y=100:w=200:h=150:color=red@'0.3+0.3*sin(t*3)':t=fill" \
pulsing_box.mp4
# Box appears at specific time
ffmpeg -i video.mp4 \
-vf "drawbox=x=100:y=100:w=200:h=150:color=yellow:t=fill:enable='between(t,2,5)'" \
timed_box.mp4
# Border/frame effect
ffmpeg -i video.mp4 \
-vf "drawbox=x=0:y=0:w=iw:h=20:color=white:t=fill,\
drawbox=x=0:y=ih-20:w=iw:h=20:color=white:t=fill,\
drawbox=x=0:y=0:w=20:h=ih:color=white:t=fill,\
drawbox=x=iw-20:y=0:w=20:h=ih:color=white:t=fill" \
bordered.mp4
# Grid of boxes
ffmpeg -i video.mp4 \
-vf "drawbox=x=0:y=0:w=iw/3:h=ih/3:color=red@0.3:t=fill,\
drawbox=x=iw/3:y=0:w=iw/3:h=ih/3:color=green@0.3:t=fill,\
drawbox=x=2*iw/3:y=0:w=iw/3:h=ih/3:color=blue@0.3:t=fill" \
color_grid.mp4
# Simple grid overlay
ffmpeg -i video.mp4 \
-vf "drawgrid=w=100:h=100:t=1:color=white@0.5" \
grid.mp4
# Rule of thirds grid
ffmpeg -i video.mp4 \
-vf "drawgrid=w=iw/3:h=ih/3:t=2:color=white@0.7" \
thirds.mp4
# Fine grid
ffmpeg -i video.mp4 \
-vf "drawgrid=w=50:h=50:t=1:color=cyan@0.3" \
fine_grid.mp4
# Center crosshair
ffmpeg -i video.mp4 \
-vf "drawbox=x=iw/2-1:y=0:w=2:h=ih:color=red:t=fill,\
drawbox=x=0:y=ih/2-1:w=iw:h=2:color=red:t=fill" \
crosshair.mp4
# Center circle marker (using multiple points)
ffmpeg -i video.mp4 \
-vf "drawbox=x=iw/2-5:y=ih/2-5:w=10:h=10:color=red:t=2" \
center_marker.mp4
# Draw circle outline
ffmpeg -i video.mp4 \
-vf "geq=lum='if(between(sqrt(pow(X-iw/2,2)+pow(Y-ih/2,2)),100,105),255,lum(X,Y))':cb='cb(X,Y)':cr='cr(X,Y)'" \
circle_outline.mp4
# Filled circle (white)
ffmpeg -i video.mp4 \
-filter_complex "\
color=c=white:s=1920x1080[c];\
[c]geq=lum='if(lt(sqrt(pow(X-W/2,2)+pow(Y-H/2,2)),200),255,0)':cb=128:cr=128[mask];\
[0:v][mask]overlay[v]" \
-map "[v]" \
filled_circle.mp4
# More practical: overlay a circle image
# First create circle image
ffmpeg -f lavfi \
-i "color=c=red:s=200x200" \
-vf "geq=lum='if(lt(sqrt(pow(X-100,2)+pow(Y-100,2)),100),255,0)':cb=128:cr=128,format=rgba,colorchannelmixer=aa='if(lt(sqrt(pow(X-100,2)+pow(Y-100,2)),100),1,0)'" \
-frames:v 1 \
circle.png
# Overlay circle on video
ffmpeg -i video.mp4 -i circle.png \
-filter_complex "[0:v][1:v]overlay=100:100" \
video_with_circle.mp4
# Radial gradient
ffmpeg -f lavfi \
-i "color=c=black:s=500x500,geq=lum='255*sqrt(pow(X-W/2,2)+pow(Y-H/2,2))/(W/2)':cb=128:cr=128" \
-frames:v 1 \
radial_gradient.png
# Checkerboard pattern
ffmpeg -f lavfi \
-i "color=c=white:s=800x800,geq=lum='if(mod(floor(X/100)+floor(Y/100),2),255,0)':cb=128:cr=128" \
-frames:v 1 \
checkerboard.png
# Diagonal stripes
ffmpeg -f lavfi \
-i "color=c=black:s=800x600,geq=lum='if(mod(X+Y,100)<50,255,0)':cb=128:cr=128" \
-frames:v 1 \
stripes.png
# Overlay logo at top-right corner
ffmpeg -i video.mp4 -i logo.png \
-filter_complex "[0:v][1:v]overlay=W-w-10:10" \
watermarked.mp4
# Overlay at bottom-left
ffmpeg -i video.mp4 -i logo.png \
-filter_complex "[0:v][1:v]overlay=10:H-h-10" \
watermarked.mp4
# Centered overlay
ffmpeg -i video.mp4 -i overlay.png \
-filter_complex "[0:v][1:v]overlay=(W-w)/2:(H-h)/2" \
centered.mp4
# Scale and position logo with transparency
ffmpeg -i video.mp4 -i logo.png \
-filter_complex "\
[1:v]format=rgba,colorchannelmixer=aa=0.5[logo];\
[0:v][logo]overlay=W-w-20:H-h-20" \
watermark_50.mp4
# Fade in logo
ffmpeg -i video.mp4 -i logo.png \
-filter_complex "\
[1:v]format=rgba,fade=t=in:st=0:d=1:alpha=1[logo];\
[0:v][logo]overlay=W-w-10:10:enable='gte(t,1)'" \
fade_logo.mp4
# Moving logo across screen
ffmpeg -i video.mp4 -i logo.png \
-filter_complex "\
[0:v][1:v]overlay=x='mod(t*100,W+w)-w':y=10" \
scrolling_logo.mp4
# Bouncing logo
ffmpeg -i video.mp4 -i logo.png \
-filter_complex "\
[0:v][1:v]overlay=x='abs(mod(t*100,2*(W-w))-(W-w))':y='abs(mod(t*80,2*(H-h))-(H-h))'" \
bouncing_logo.mp4
# Rotating overlay (using rotate filter)
ffmpeg -i video.mp4 -i logo.png \
-filter_complex "\
[1:v]rotate=t*PI/4:c=none:ow=200:oh=200[rot];\
[0:v][rot]overlay=(W-200)/2:(H-200)/2" \
rotating_logo.mp4
# Multiple logos/watermarks
ffmpeg -i video.mp4 -i logo1.png -i logo2.png \
-filter_complex "\
[0:v][1:v]overlay=10:10[tmp];\
[tmp][2:v]overlay=W-w-10:10" \
multi_logo.mp4
# Grid of thumbnails
ffmpeg -i main.mp4 -i thumb1.png -i thumb2.png -i thumb3.png -i thumb4.png \
-filter_complex "\
[1:v]scale=200:150[t1];[2:v]scale=200:150[t2];\
[3:v]scale=200:150[t3];[4:v]scale=200:150[t4];\
[0:v][t1]overlay=10:10[a];\
[a][t2]overlay=220:10[b];\
[b][t3]overlay=10:170[c];\
[c][t4]overlay=220:170" \
thumbnail_grid.mp4
# Text with background box
ffmpeg -i video.mp4 \
-vf "drawtext=text='LIVE':x=10:y=10:fontsize=36:fontcolor=white:\
box=1:boxcolor=red:boxborderw=10" \
live_badge.mp4
# Text with shadow
ffmpeg -i video.mp4 \
-vf "drawtext=text='Title':x=(w-tw)/2:y=50:fontsize=72:fontcolor=white:\
shadowcolor=black:shadowx=3:shadowy=3" \
title.mp4
# Text with outline
ffmpeg -i video.mp4 \
-vf "drawtext=text='Outlined':x=100:y=100:fontsize=64:fontcolor=yellow:\
borderw=3:bordercolor=black" \
outlined.mp4
# Professional lower third
ffmpeg -i video.mp4 \
-vf "drawbox=x=0:y=ih-120:w=400:h=100:color=0x1a1a2e@0.9:t=fill,\
drawbox=x=0:y=ih-120:w=5:h=100:color=0x00ff88:t=fill,\
drawtext=text='John Smith':x=20:y=ih-110:fontsize=32:fontcolor=white,\
drawtext=text='Senior Developer':x=20:y=ih-70:fontsize=24:fontcolor=0xaaaaaa" \
lower_third.mp4
# Animated lower third (slide in)
ffmpeg -i video.mp4 \
-vf "drawbox=x='if(lt(t,1),-400+t*400,0)':y=ih-120:w=400:h=100:color=blue@0.8:t=fill:\
enable='gte(t,0.5)',\
drawtext=text='Guest Speaker':x='if(lt(t,1.2),-400+t*333,20)':y=ih-100:\
fontsize=28:fontcolor=white:enable='gte(t,0.7)'" \
animated_lower.mp4
# Timecode overlay
ffmpeg -i video.mp4 \
-vf "drawtext=timecode='00\:00\:00\:00':rate=30:x=10:y=10:\
fontsize=32:fontcolor=white:box=1:boxcolor=black@0.6" \
with_timecode.mp4
# Frame counter
ffmpeg -i video.mp4 \
-vf "drawtext=text='Frame\: %{frame_num}':x=10:y=10:fontsize=24:fontcolor=white:\
box=1:boxcolor=black@0.5" \
frame_counter.mp4
# Horizontal progress bar
ffmpeg -i video.mp4 \
-vf "drawbox=x=50:y=ih-30:w=iw-100:h=10:color=gray@0.5:t=fill,\
drawbox=x=50:y=ih-30:w='(iw-100)*t/10':h=10:color=red:t=fill" \
progress_bar.mp4
# Circular progress (approximate with boxes)
# Note: True circular progress requires more complex expressions
# Rotating indicator using drawbox
ffmpeg -i video.mp4 \
-vf "drawbox=x='iw/2+50*cos(t*3)':y='ih/2+50*sin(t*3)':w=10:h=10:color=white:t=fill" \
spinner.mp4
# Dark vignette
ffmpeg -i video.mp4 \
-vf "vignette=PI/4" \
vignette.mp4
# Custom vignette intensity
ffmpeg -i video.mp4 \
-vf "vignette=angle=PI/4:mode=backward" \
soft_vignette.mp4
# Warm tint using blend
ffmpeg -i video.mp4 \
-f lavfi -i "color=c=0xFF8800:s=1920x1080" \
-filter_complex "[0:v][1:v]blend=all_mode=softlight:all_opacity=0.3" \
warm_tint.mp4
# Cool tint
ffmpeg -i video.mp4 \
-f lavfi -i "color=c=0x0088FF:s=1920x1080" \
-filter_complex "[0:v][1:v]blend=all_mode=softlight:all_opacity=0.2" \
cool_tint.mp4
| Mode | Effect |
|---|---|
| addition | Add pixel values |
| multiply | Multiply (darken) |
| screen | Screen (lighten) |
| overlay | Overlay blend |
| softlight | Soft light |
| hardlight | Hard light |
| difference | Difference |
| exclusion | Exclusion |
| darken | Darken only |
| lighten | Lighten only |
# Multiply blend (darken)
ffmpeg -i video.mp4 -i texture.png \
-filter_complex "[0:v][1:v]blend=all_mode=multiply" \
multiply.mp4
# Screen blend (lighten)
ffmpeg -i video.mp4 -i light_leak.png \
-filter_complex "[0:v][1:v]blend=all_mode=screen" \
light_leak.mp4
# Overlay blend
ffmpeg -i video.mp4 -i texture.png \
-filter_complex "[0:v][1:v]blend=all_mode=overlay:all_opacity=0.5" \
textured.mp4
# Title safe (90%) and action safe (80%) guides
ffmpeg -i video.mp4 \
-vf "drawbox=x=iw*0.05:y=ih*0.05:w=iw*0.9:h=ih*0.9:color=red:t=1,\
drawbox=x=iw*0.1:y=ih*0.1:w=iw*0.8:h=ih*0.8:color=yellow:t=1" \
safe_areas.mp4
# 16:9 guide on 4:3 content
ffmpeg -i video_4x3.mp4 \
-vf "drawbox=x=(iw-iw*0.75)/2:y=0:w=iw*0.75:h=ih:color=green:t=1" \
aspect_guide.mp4
# 2.35:1 cinematic guide
ffmpeg -i video.mp4 \
-vf "drawbox=x=0:y=ih*0.12:w=iw:h=ih*0.76:color=red:t=1" \
cinematic_guide.mp4
# Blur outside rectangle
ffmpeg -i video.mp4 \
-filter_complex "\
[0:v]split[a][b];\
[a]boxblur=20[blur];\
[b]crop=400:300:100:100[crop];\
[blur][crop]overlay=100:100" \
spotlight.mp4
# Apply effect only to masked area
ffmpeg -i video.mp4 -i mask.png \
-filter_complex "\
[0:v]split[a][b];\
[a]curves=preset=lighter[light];\
[1:v]format=gray[mask];\
[light][b][mask]maskedmerge" \
masked_effect.mp4
# SMPTE color bars
ffmpeg -f lavfi -i "smptebars=size=1920x1080:duration=10" \
-c:v libx264 -pix_fmt yuv420p \
colorbars.mp4
# Test pattern with grid
ffmpeg -f lavfi -i "testsrc=size=1920x1080:duration=10" \
-c:v libx264 -pix_fmt yuv420p \
testpattern.mp4
# Solid color
ffmpeg -f lavfi -i "color=c=red:s=1920x1080:d=5" \
-c:v libx264 -pix_fmt yuv420p \
red.mp4
# Horizontal gradient
ffmpeg -f lavfi -i "gradients=s=1920x1080:c0=0x000033:c1=0x003366:duration=5" \
-c:v libx264 -pix_fmt yuv420p \
gradient.mp4
# Radial gradient (using geq)
ffmpeg -f lavfi \
-i "color=c=black:s=1920x1080:d=5,geq=lum='255-255*sqrt(pow(X-W/2,2)+pow(Y-H/2,2))/sqrt(pow(W/2,2)+pow(H/2,2))':cb=128:cr=128" \
-c:v libx264 -pix_fmt yuv420p \
radial.mp4
# Noise overlay
ffmpeg -f lavfi -i "nullsrc=size=1920x1080:duration=5,geq=lum='random(1)*255':cb=128:cr=128" \
-c:v libx264 -pix_fmt yuv420p \
noise.mp4
# Film grain effect
ffmpeg -i video.mp4 -f lavfi -i "nullsrc=size=1920x1080,geq=lum='random(1)*20+lum(X,Y)':cb=128:cr=128" \
-filter_complex "[0:v][1:v]blend=all_mode=addition:all_opacity=0.1" \
grainy.mp4
# Use enable parameter to limit processing
ffmpeg -i video.mp4 \
-vf "drawbox=x=100:y=100:w=200:h=150:color=red:t=fill:enable='between(t,5,10)'" \
optimized.mp4
# Pre-render static graphics
# Instead of complex real-time drawing, overlay pre-made images
ffmpeg -i video.mp4 -i prerendered_graphic.png \
-filter_complex "[0:v][1:v]overlay=10:10" \
faster.mp4
# Use hardware encoding for graphics-heavy output
ffmpeg -i video.mp4 \
-vf "drawbox=x=100:y=100:w=200:h=150:color=red:t=fill" \
-c:v h264_nvenc -preset fast \
output.mp4
"Expression syntax error"
# Escape special characters properly
# Use single quotes around expression values
ffmpeg -i video.mp4 \
-vf "drawbox=x='iw/2':y='ih/2':w=100:h=100:color=red:t=fill" \
output.mp4
Overlay not visible
# Check PNG has alpha channel
ffprobe -v error -select_streams v -show_entries stream=pix_fmt overlay.png
# Convert to RGBA if needed
ffmpeg -i overlay.png -pix_fmt rgba overlay_rgba.png
Text not rendering
# Specify font file explicitly
ffmpeg -i video.mp4 \
-vf "drawtext=text='Hello':fontfile=/path/to/font.ttf:fontsize=24:fontcolor=white" \
output.mp4
# List available fonts
fc-list : family | sort | uniq
Performance issues with complex filters
# Reduce filter chain complexity
# Pre-render graphics
# Use lower resolution for preview
ffmpeg -i video.mp4 \
-vf "scale=640:360,drawbox=..." \
-preset ultrafast \
preview.mp4
This guide covers FFmpeg shape and graphics operations. For subtitle and caption overlays, see the captions-subtitles skill.
This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in commands, user interaction patterns, or command development best practices for Claude Code.
This skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDE_PLUGIN_ROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, UserPromptSubmit, PreCompact, Notification). Provides comprehensive guidance for creating and implementing Claude Code plugin hooks with focus on advanced prompt-based hooks API.