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