Convert dolby vision profile 8 mkv to dolby vision profile 5 mp4

dvconvert.sh

#!/bin/bash
# Script to convert MKV files with dolby vision video (any profile), dolby audio (AC3 or EAC3)
# and subtitles, to MP4 with dolby vision profile 5 and SRT file.

# Default settings
video_id=0
audio_id=0
subtitle_id=0
skip_extraction=false
audio_codec="eac3"
audio_ext="ec3"

# Usage message
usage() {
  echo "Usage: $0 [-v video_id] [-a audio_id] [-s subtitle_id] [-k] [-c] [-h] input.mkv"
  echo "Options:"
  echo "  -v <id>    Video stream ID to extract (default 0)"
  echo "  -a <id>    Audio stream ID to extract (default 0)"
  echo "  -s <id>    Subtitle stream ID to extract (default 0)"
  echo "  -k         Skip ffmpeg extraction, run only mp4muxer"
  echo "  -c         Use AC3 audio instead of EAC3"
  echo "  -h         Show this help message and exit"
  exit 0
}

# Parse options
while getopts ":v:a:s:kch" opt; do
  case ${opt} in
    v ) video_id=$OPTARG ;;
    a ) audio_id=$OPTARG ;;
    s ) subtitle_id=$OPTARG ;;
    k ) skip_extraction=true ;;
    c )
      audio_codec="ac3"
      audio_ext="ac3"
      ;;
    h ) usage ;;
    \? )
      echo -e "\nInvalid option: -$OPTARG\n" >&2
      usage
      ;;
  esac
done

# Shift processed options
shift $((OPTIND -1))

# Check input file
input_file="$1"
if [[ -z "$input_file" ]]; then
  echo "Error: No input file provided."
  usage
fi

# Function to format seconds to mm:ss
format_time() {
  local total_seconds=$1
  printf "%d min %02d sec" $((total_seconds / 60)) $((total_seconds % 60))
}

# Record total start time
total_start_time=$(date +%s)

# Remove path and extension for naming
base_name="$(basename "$input_file" .mkv)"

# Create a new folder based on the base name
output_dir="./$base_name"
mkdir -p "$output_dir"

# Extract the video and audio into separate files
if ! $skip_extraction; then
  start_time=$(date +%s)

  set -x
  if ! ffmpeg -i "$input_file" \
    -map 0:v:"$video_id" -c:v copy "$output_dir/${base_name}.hevc" \
    -map 0:a:"$audio_id" -c:a copy -f "$audio_codec" "$output_dir/${base_name}.${audio_ext}" \
    -map 0:s:"$subtitle_id" -c:s copy "$output_dir/${base_name}.srt"; then
    set +x
    echo -e "\nError: ffmpeg extraction failed."
    exit 1
  fi
  set +x

  end_time=$(date +%s)
  duration=$((end_time - start_time))
  echo -e "\nffmpeg extraction successful. Time taken: $(format_time $duration)"
fi

start_time=$(date +%s)

set -x
if ! mp4muxer -o "$output_dir/${base_name}.mp4" \
  -i "$output_dir/${base_name}.hevc" \
  -i "$output_dir/${base_name}.${audio_ext}" \
  --dv-profile 5; then
  set +x
  echo -e "\nError: mp4muxer failed."
  exit 1
fi
set +x

end_time=$(date +%s)
duration=$((end_time - start_time))
echo -e "\nmp4muxer muxing successful. Time taken: $(format_time $duration)"

# Always cleanup intermediate files
echo -e "\nCleaning up intermediate files..."
rm -f "$output_dir/${base_name}.hevc" "$output_dir/${base_name}.${audio_ext}"
echo -e "\nCleanup done. Final output: $output_dir/${base_name}.mp4"

# Total time
total_end_time=$(date +%s)
total_duration=$((total_end_time - total_start_time))
echo "Total time taken: $(format_time $total_duration)"