.bashrc parallel ffmpeg video tools

.bashrc-parallel-ffmpeg-video-tools.sh

# Video encoding. Arguments to ffmpeg should be passed in quotes
# Example
#  ls *.avi | ff_avi2webm "-filter:v 'crop=in_w-100:in_h/2'"

ff_any2webm(){
  parallel ffmpeg -i {} $1 -c:v vp9 {.}.webm
}

ff_whatsapp(){
  # Convert specified videos to mp4 that are compatible with whatsapp
  parallel ffmpeg -i {} $1 -c:v libx264 -profile:v baseline -level 3.0 -pix_fmt yuv420p {.}-whatsapp.mp4
}

# https://unix.stackexchange.com/a/437044
ff_side_by_side(){
  # Takes two input files in any format and places them side by side, output in webm format
  ffmpeg -i "$1" -i "$2" -filter_complex "[0:v][1:v]hstack=inputs=2[v]" -map "[v]" -c:v vp9 "$3".webm
}

# https://stackoverflow.com/a/33764934
ff_side_by_side4(){ 
  # Takes two pairs of files in any format, makes vertical pairs, and places them side by side, output in VP9 webm format
  ffmpeg -i $1 -i $2 -i $3 -i $4 -filter_complex "[0:v][1:v]hstack=inputs=2[top];[2:v][3:v]hstack=inputs=2[bottom];[top][bottom]vstack=inputs=2[v]" -map "[v]" -c:v vp9 "$5".webm
}