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Apply video filters - scale, crop, watermark, speed, blur, and visual effects
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
SOC 직업 분류 기준
Materials science toolkit. Crystal structures (CIF, POSCAR), phase diagrams, band structure, DOS, Materials Project integration, format conversion, for computational materials science.
World-class Java and Spring Boot development skill for enterprise applications, microservices, and cloud-native systems. Expertise in Spring Framework, Spring Boot 3.x, Spring Cloud, JPA/Hibernate, and reactive programming with WebFlux. Includes project scaffolding, dependency management, security implementation, and performance optimization.
World-class data engineering skill for building scalable data pipelines, ETL/ELT systems, real-time streaming, and data infrastructure. Expertise in Python, SQL, Spark, Airflow, dbt, Kafka, Flink, Kinesis, and modern data stack. Includes data modeling, pipeline orchestration, data quality, streaming quality monitoring, and DataOps. Use when designing data architectures, building batch or streaming data pipelines, optimizing data workflows, or implementing data governance.
This skill should be used when working on Lean 4 formalization projects to maintain persistent memory of successful proof patterns, failed approaches, project conventions, and user preferences across sessions using MCP memory server integration
Extract, normalize, mix, and process audio tracks - audio manipulation and analysis
Convert media files between formats - video containers, audio formats, and codec transcoding
| name | FFmpeg Video Filters |
| description | Apply video filters - scale, crop, watermark, speed, blur, and visual effects |
Apply video filters for scaling, cropping, watermarks, speed changes, and visual effects.
# Scale to 720p (maintain aspect ratio)
ffmpeg -i input.mp4 -vf scale=-2:720 output.mp4
# Scale to specific width (maintain aspect ratio)
ffmpeg -i input.mp4 -vf scale=1280:-2 output.mp4
# Scale to exact dimensions (may distort)
ffmpeg -i input.mp4 -vf scale=1920:1080 output.mp4
# Scale with algorithm
ffmpeg -i input.mp4 -vf scale=1280:720:flags=lanczos output.mp4
# Crop to 16:9 from center
ffmpeg -i input.mp4 -vf "crop=1920:1080" output.mp4
# Crop with offset (x:y:width:height)
ffmpeg -i input.mp4 -vf "crop=1920:1080:0:0" output.mp4
# Crop from specific position
ffmpeg -i input.mp4 -vf "crop=800:600:100:50" output.mp4
# Add image watermark (top-left)
ffmpeg -i input.mp4 -i logo.png \
-filter_complex "overlay=10:10" output.mp4
# Bottom-right watermark
ffmpeg -i input.mp4 -i logo.png \
-filter_complex "overlay=W-w-10:H-h-10" output.mp4
# Center watermark
ffmpeg -i input.mp4 -i logo.png \
-filter_complex "overlay=(W-w)/2:(H-h)/2" output.mp4
# Speed up 2x
ffmpeg -i input.mp4 -vf "setpts=0.5*PTS" -af "atempo=2.0" output.mp4
# Slow down 0.5x
ffmpeg -i input.mp4 -vf "setpts=2.0*PTS" -af "atempo=0.5" output.mp4
# Speed up video only (no audio)
ffmpeg -i input.mp4 -vf "setpts=0.5*PTS" -an output.mp4
# Blur entire video
ffmpeg -i input.mp4 -vf "boxblur=10:5" output.mp4
# Blur specific region (coordinates x:y:w:h)
ffmpeg -i input.mp4 -vf "boxblur=10:5:x=100:y=100:w=200:h=200" output.mp4
# Gaussian blur
ffmpeg -i input.mp4 -vf "gblur=sigma=5" output.mp4
# Adjust brightness and contrast
ffmpeg -i input.mp4 -vf "eq=brightness=0.1:contrast=1.2" output.mp4
# Increase brightness
ffmpeg -i input.mp4 -vf "eq=brightness=0.2" output.mp4
# Adjust saturation
ffmpeg -i input.mp4 -vf "eq=saturation=1.5" output.mp4
# Rotate 90 degrees clockwise
ffmpeg -i input.mp4 -vf "transpose=1" output.mp4
# Rotate 90 degrees counter-clockwise
ffmpeg -i input.mp4 -vf "transpose=2" output.mp4
# Rotate 180 degrees
ffmpeg -i input.mp4 -vf "transpose=1,transpose=1" output.mp4
# Chain multiple filters
ffmpeg -i input.mp4 -vf "scale=1280:720,crop=800:600:100:50" output.mp4
# Complex filter chain
ffmpeg -i input.mp4 -i logo.png \
-filter_complex "[0:v]scale=1280:720[scaled];[scaled][1:v]overlay=10:10" \
output.mp4
# Fade in (first 2 seconds)
ffmpeg -i input.mp4 -vf "fade=t=in:st=0:d=2" output.mp4
# Fade out (last 2 seconds)
ffmpeg -i input.mp4 -vf "fade=t=out:st=10:d=2" output.mp4
# Fade in and out
ffmpeg -i input.mp4 -vf "fade=t=in:st=0:d=2,fade=t=out:st=8:d=2" output.mp4
-vf for video filters-filter_complex for complex operations