vid2gif.sh

#!/bin/sh

# http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html

_convert() {
  palette="$(mktemp).png"
  fps="15"
  width="800"
  # width="300"
  dither="dither=bayer:bayer_scale=3"
  filters="fps=$fps,scale=$width:-1:flags=lanczos"
  output="$1.gif"

  export PATH="$HOME/Downloads:$PATH"

  ffmpeg -i "$1" -vf "$filters,palettegen=stats_mode=diff" -y "$palette"
  ffmpeg -i "$1" -i "$palette" -lavfi "$filters [x]; [x][1:v] paletteuse=$dither" -y "$output"

  rm "$palette"
}

for f in "$@"; do
  _convert "$f"
done

vid2mp4.sh

#!/bin/sh

export PATH="$HOME/Downloads:$PATH"

_convert() {
  output="$1.mp4"
  ffmpeg -i "$1" -vcodec h264 -an "$output"
}

for f in "$@"; do
  _convert "$f"
done