ffmpeg, mogrify, montage and convert ( imagemagick tools)

ffmpeg_cheatsheet.sh

#bulk convert with ffmpeg, cmd works, powershell doesnt
for %i in (*.*); do ffmpeg -i %i %~ni.mp4

#extract a video part
ffmpeg -i original.avi -an -ss 17 -t 5 cutted.avi
# -i, is the input file: original.avi
# -an, to not copy the audio (it was giving me troubles and i dont need it now)
# -ss, where to start: at 17 seconds
# -t, duration: 5 seconds
#for more precision
ffmpeg -an -ss 00:00:17.2 -t 00:00:04.3  -i original.avi cutted.avi 
# or set end time instead of t
ffmpeg -i input.mp4 -c copy -ss 00:04:25.000 -to 00:09:25.000 output.mp4

#to crop a video
ffmpeg -i cutted.avi -vf crop=387:220:20:32 cropped.avi
#-vf crop=width:height:x:y

#to extract jpgs from video
mkdir frames
ffmpeg -i cropped.avi -f image2 frames/image-%03d.jpg

#create video from images, asuming images numbered 00001.jpg - 09999.jpg or something
ffmpeg -r 30 -f image2 -i %05d.jpg -vcodec libx264 video.mp4


#to batch resize images
cp -R frames frames_resized
cd frames_resized
mogrify -resize 50% *.jpg 

#to create a sprite sheet
montage -background transparent -tile 7x20 -geometry +0+0 frames_resized/*.jpg sprite.jpg

#to make a color (and similar) transparent
convert sprite.png -channel rgba -alpha set -fuzz 7% -fill none -opaque "#0c7ed4" sprite.png


# gif from video (full guide at https://github.com/cyburgee/ffmpeg-guide)
ffmpeg -ss 382.0 -t 3 -i viu.mp4 -filter_complex "[0:v] fps=10,scale=w=640:h=-1,split [a][b];[a] palettegen=stats_mode=single [p];[b][p] paletteuse=new=1" live-emojing.gif

# batch transcode for davinci resolve
for f in *.mov; do ffmpeg -i $f -vcodec dnxhd -acodec pcm_s16le "transcoded/$f" ;done;
# or 
ffmpeg -i $f -c:v prores -profile:v 2 -c:a pcm_s16le "transcoded/$f"
for i in *.mp4; do ffmpeg -i "$i" -c:v prores -profile:v 3 -c:a pcm_s16le "${i%.*}.mov"; done



# get audio as mp3
ffmpeg -i bluedot-outrun.mp4 -codec:a libmp3lame -qscale:a 2 output.mp3



# convert video for IG
# https://medium.com/abraia/basic-video-editing-for-social-media-with-ffmpeg-commands-1e873801659
ffmpeg -i trailer_1800p.mov -c:v libx264 -crf 20 -preset slow -profile:v high -level 4.0 -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart -c:a aac -b:a 128k video.mp4


#encode for youtube
ffmpeg -i input.mov -c:v libx264 -preset slow -crf 18 -c:a aac -b:a 192k -pix_fmt yuv420p output.mkv

mkv a mov

ffmpeg -i test.mkv -vcodec dnxhd -acodec pcm_s16le -s 1920x1080 -r 30000/1001 -b:v 36M -pix_fmt yuv422p -f mov output.mov

Para normalizar el audio y convertir video. All in one

ffmpeg -i input.mp4 -vcodec dnxhd -acodec pcm_s16le -s 1920x1080 -r 30000/1001 -b:v 36M -pix_fmt yuv422p -filter:a dynaudnorm  -f mov output.mov

Px format

-pix_fmt yuv420p

convert video for IG + Px format

ffmpeg -i input.mxf -c:v libx264 -crf 20 -preset slow -profile:v high -pix_fmt yuv420p -level 4.0 -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart -c:a aac -b:a 128k output.mp4