update_mp4_metadata.sh

#!/usr/bin/env bash
#--------------------------------------------------------------------------------------------------
#
# set -e
version="0.0.1"
this_script="${0%.sh}"
project="bash template"
#
#--------------------------------------------------------------------------------------------------

# http://www.skybert.net/bash/debugging-bash-scripts-on-the-command-line/
export PS4='# ${BASH_SOURCE}:${LINENO}: ${FUNCNAME[0]}() - [${SHLVL},${BASH_SUBSHELL},$?] '

session=$(date +"%Y%m%d_%H%M_%S")
start=`date +%s`

UNAME=$(command -v uname)

prereqs=(
  ffmpeg
)

backup_project () {
  log_warning "function: backup_project"
  mkdir -p ~/backup_projects
  sudo /bin/tar -czvf "~/backup_projects/${SESS}.`whoami`.${HOSTNAME}.${project}-${version}.tar.gz" ${pwd}
}

function pushover_install () {
  log_warning "function: pushover_install"
  if [[ ! -e "./pushover" ]]; then
    wget https://gist.github.com/pleasemarkdarkly/05cf0e99c39d176f15603d4a3870c67c/raw -O ./pushover
    chmod +x ./pushover
    cp -v ./pushover /usr/local/bin
    ./pushover "bootstrap installed successfully"
  fi
}

function verify_bash_debugger () {
 if [[ ! -f ./bashdb ]]; then
   wget http://pretty.pleasemarkdarkly.com:8080/VUAvT/bashdb
 fi
 if [[ ! -f ./header.sh ]]; then
   wget http://pretty.pleasemarkdarkly.com:8080/EbcOe/header.sh
 fi
 if [[ ! -f ./functions.sh ]]; then
   wget http://pretty.pleasemarkdarkly.com:8080/15m20A/functions.sh
 fi
}

function verify_log4bash () {
 echo "function: verify_log4bash"
 if [[ ! -e ./log4bash.sh ]]; then
  echo "update remote link to github"
  wget https://transfersh.pleasemarkdarkly.com/DPL6R/log4bash.sh
   cp -v log4bash.sh /bootstrap/log4bash.sh
 fi

 source ./log4bash.sh

 log "example log outputs"
 log "log output";
 log_info "log_info output";
 log_success "log_success output";
 log_warning "log_warning output";
 # log_error "log_error: error";
 # log_error "script: $template starting";
 log "end example log outputs"
 echo
}

function os_detect_install_prereqs () {
 log "function: os_detect_install_prereqs"
 case $( "${UNAME}" | tr '[:upper:]' '[:lower:]') in
   linux*)
     log_info 'linux\n'
     if [ command -v bash 2>/dev/null ]; then
        log_info "prerequisites bash found"
     else
        log_info "installing prerequisites"
        install_apps
     fi
     ;;
   darwin*)
     log_info 'darwin\n'
     if [ command -v bash 2>/dev/null ]; then
        log_info "prerequisites rclone, wget found"
     else
        log_info "installing prerequisites"
        install_apps
     fi
     ;;
   msys*|cygwin*|mingw*)
     # or possible 'bash on windows'
     log_warning 'windows\n'
     return
     ;;
   nt|win*)
     log_warning 'windows\n'
     return
     ;;
   *)
     ;;
 esac
}

function install_apps () {
  log_warning "function: install_apps"
  for app in "${prereqs[@]}"
  do
    log_info "function: installing - $app"
    case $( "${UNAME}" | tr '[:upper:]' '[:lower:]') in
      linux*)
        apt install -y $app
        apt --fix-broken install
        apt-get update -y; apt autoremove
        ;;
      darwin*)
        brew install $app & brew upgrade $app
        ;;
      *)
        ;;
    esac
  done
}

function main () {
  log_info "$project.$this.$version $session"
  # os_detect_install_prereqs
  echo

  local title="'The Illustrations Collection'"
  local date="$very_recent"
  local author="'Natasha Pankina (me@natasha-pankina.com)'"
  local genre="'Markeing Materials'"
  local copyright="'© 2020 Natasha Pankina Illustrations (https://store.natasha-pankina.com/)'"
  local network="'Natasha Pankina Illustrations Marketing Channel'"
  local comment="'marketing video for https://www.natasha-pankina.com - natasha pankina, natasha, pankina, natasha pankina art, natasha pankina illustrations, artwork, vector, vector illustrations, hand drawn, hand drawing, cartoon, sketch, doodle, icon, collection, art collection, online shop, vector art, object, freehand drawing, graphic, design, element, icon collection, icon set, cute, watercolor, copic marker, tutorial, drawing, beautiful, illustration, fantasy artwork video, fantasy watercolor, youtube artist collection, youtube artist drawings'"
  local description="$comment"
  local synopsis="$comment"
  local lyrics="$comment"

  find . -name "*.mp4" -exec exiftool "{}" \
      -metadata \
     -title="${title}" \
      -metadata \
     -author="${author}" \
      -metadata \
     -genre="${genre}" \
      -metadata \
     -copyright="${copyright}" \
      -metadata \
     -network="${copyright}" \
      -metadata \
     -comment="${comment}" \
      -metadata \
     -description="${comment}" \
      -metadata \
     -synopsis="${synopsis}" \;


  echo
  cleanup
}

function cleanup () {
  shopt -u nullglob
  find . -name '*.log' -exec rm {} \;
}

verify_log4bash
verify_bash_debugger

main "[@]" | tee "./$session.log"