ffmpeg

convert.sh

#!/usr/bin/env bash

set -o errexit
set -o nounset
set -o pipefail

alias ffmpeg='ffmpeg -hide_banner -loglevel warning'

function process_video() {
  local -r VIDEO="$1"

  test -f "0/${VIDEO}" || {
    echo "Input file 0/${VIDEO} not found" >&2
    return 1
  }

  test -f "1/${VIDEO}" || ffmpeg -i "0/${VIDEO}" -vcodec copy -an "1/${VIDEO}"
  #test -f "2/${VIDEO}" || test -f "3/${VIDEO}" || ffmpeg -i "1/${VIDEO}" -filter:v 'crop=in_w/2:in_h:in_w/4:0' "2/${VIDEO}"
  test -f "3/${VIDEO}" || {
    test -f "2/${VIDEO}" && \
      ffmpeg -i "2/${VIDEO}" -r 100 -filter:v 'setpts=PTS/25' "3/${VIDEO}" || \
      ffmpeg -i "1/${VIDEO}" -r 100 -filter:v 'setpts=PTS/25' "3/${VIDEO}"
  }
}

for INPUT in $@; do
  process_video "${INPUT}"
done