download-video.sh

#!/bin/bash

###############################################################################
# Download full video from conference
###############################################################################
# Arguments:
# $1 - base url for download video from conference
# Use:
# ./download-video.sh \
#  https://<URL>/vod/update/1669845928/61c4b2fd3a781d75_3_48524.mp4/media_0.ts
###############################################################################
set -euo pipefail

BASE_URL=$(echo ${1} | sed -r 's/media_[0-9]+\.ts/media_/g')
OUTPUT_DIR="./videos"
VIDEOS_LIST_FILE="./video_files.txt"
FULL_VIDEO_FILE="./full_video.mp4"
REMOVE_OUTPUT_DIR_AFTER_FINISH='true'

mkdir -p ${OUTPUT_DIR}
rm -rf ${VIDEOS_LIST_FILE}

# Usage: bannerColor "my title" "red" "*"
function bannerColor() {
  case ${2} in
    black) color=0
    ;;
    red) color=1
    ;;
    green) color=2
    ;;
    yellow) color=3
    ;;
    blue) color=4
    ;;
    magenta) color=5
    ;;
    cyan) color=6
    ;;
    white) color=7
    ;;
    *) echo "color is not set"; exit 1
    ;;
  esac

  local msg="${3} ${1} ${3}"
  local edge
  edge=${msg//?/$3}
  tput setaf ${color}
  tput bold
  echo "${edge}"
  echo "${msg}"
  echo "${edge}"
  tput sgr 0
  echo
}

if [ ! "$(command -v ffmpeg)" ]; then
  bannerColor "Command \"ffmpeg\" does not exist on system. Run 'brew install ffmpeg'" "red" "*"
  exit -1
fi



for((i=0;i<1000;i++)); do
  if [ -f "${OUTPUT_DIR}/video${i}.ts" ]; then
    echo "File \"${OUTPUT_DIR}/video${i}.ts\" exists. Continue."
    echo "file ${OUTPUT_DIR}/video${i}.ts" >> ${VIDEOS_LIST_FILE}
    continue
  fi
  # echo "BASE_URL=${BASE_URL}${i}.ts"
  status=$(curl -s -o /dev/null -w "%{http_code}" ${BASE_URL}${i}.ts)
  # echo status=$status
  if [[ "${status}" == "200" ]]; then
    # echo "${BASE_URL}${i}.ts"
    curl -s -o "${OUTPUT_DIR}/video${i}.ts" "${BASE_URL}${i}.ts"
    echo "file ${OUTPUT_DIR}/video${i}.ts" >> ${VIDEOS_LIST_FILE}
    echo "Success download file $(basename ${BASE_URL}${i}.ts)"
  else
    echo "BASE_URL=${BASE_URL}${i}.ts"
    echo "Not correct status=$status! All videos download. Break it"
    break
  fi
done

echo "Concatenate video files to ${FULL_VIDEO_FILE}.tmp.ts"
ffmpeg -f concat -safe 0 -i ${VIDEOS_LIST_FILE} -c copy ${FULL_VIDEO_FILE}.tmp.ts

echo "Convert ${FULL_VIDEO_FILE}.tmp.ts to mp4"
ffmpeg -i ${FULL_VIDEO_FILE}.tmp.ts -bsf:a aac_adtstoasc -acodec copy -vcodec copy ${FULL_VIDEO_FILE}

# remove unused directories

if [[ "${REMOVE_OUTPUT_DIR_AFTER_FINISH}" == "true" ]]; then
  echo "Remove downloaded video files"
  rm -rf ${OUTPUT_DIR}
fi
rm -rf ${FULL_VIDEO_FILE}.tmp.ts
rm -rf ${VIDEOS_LIST_FILE}

bannerColor "Success! Open a file - ${FULL_VIDEO_FILE}" "green" "*"