-
-
Save peelman/4c3aaa88da60b41c5ebd to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #!/bin/bash | |
| # | |
| # transcode-video.sh | |
| # | |
| # Copyright (c) 2013-2014 Don Melton | |
| # | |
| about() { | |
| cat <<EOF | |
| $program 4.0 of October 23, 2014 | |
| Copyright (c) 2013-2014 Don Melton | |
| EOF | |
| exit 0 | |
| } | |
| usage_prologue() { | |
| cat <<EOF | |
| Transcode video file or disc image directory into format and size similar to | |
| popular online downloads. Works best with Blu-ray or DVD rip. | |
| Automatically determines target video bitrate, number of audio tracks, etc. | |
| WITHOUT ANY command line options. | |
| Usage: $program [OPTION]... [FILE|DIRECTORY] | |
| --help display basic options and exit | |
| --fullhelp display ALL options and exit | |
| EOF | |
| } | |
| usage() { | |
| usage_prologue | |
| cat <<EOF | |
| --title NUMBER select numbered title in video media (default: 1) | |
| (\`0\` to scan media, list title numbers and exit) | |
| --mkv output Matroska format instead of MP4 | |
| --big raise default limits for both video and AC-3 audio bitrates | |
| (always increases output size) | |
| --fast, --faster, --veryfast | |
| use x264 encoder preset to trade quality for speed | |
| (mitigate quality loss by combining with \`--big\`) | |
| --slow, --slower, --veryslow | |
| use x264 encoder preset to trade speed for compression | |
| (can also improve quality) | |
| --crop T:B:L:R set video croping bounds (default: 0:0:0:0) | |
| (use \`detect-crop.sh\` script for optimal bounds) | |
| (use \`--crop auto\` for \`HandBrakeCLI\` behavior) | |
| --720p constrain video to fit within 1280x720 pixel bounds | |
| --audio TRACK select audio track identified by number (default: 1) | |
| --burn TRACK burn subtitle track identified by number | |
| (default: first forced subtitle, if any) | |
| --version output version information and exit | |
| Requires \`HandBrakeCLI\` executable in \$PATH. | |
| Output and log file are written to current working directory. | |
| EOF | |
| exit 0 | |
| } | |
| usage_full() { | |
| usage_prologue | |
| cat <<EOF | |
| Input options: | |
| --title NUMBER select numbered title in video media (default: 1) | |
| (\`0\` to scan media, list title numbers and exit) | |
| --chapters NUMBER[-NUMBER] | |
| select chapters, single or range (default: all) | |
| Output options: | |
| --mkv output Matroska format instead of MP4 | |
| --m4v output MP4 with \`.m4v\` extension instead of \`.mp4\` | |
| Quality options: | |
| --big raise default limits for both video and AC-3 audio bitrates | |
| (always increases output size) | |
| --fast, --faster, --veryfast | |
| use x264 encoder preset to trade quality for speed | |
| (mitigate quality loss by combining with \`--big\`) | |
| --slow, --slower, --veryslow | |
| use x264 encoder preset to trade speed for compression | |
| (can also improve quality) | |
| Video options: | |
| --crop T:B:L:R set video croping bounds (default: 0:0:0:0) | |
| (use \`detect-crop.sh\` script for optimal bounds) | |
| (use \`--crop auto\` for \`HandBrakeCLI\` behavior) | |
| --720p constrain video to fit within 1280x720 pixel bounds | |
| --rate FPS force video frame rate (default: based on input) | |
| Audio options: | |
| --audio TRACK select audio track identified by number (default: 1) | |
| --add-audio TRACK[,NAME] | |
| add audio track in AAC format with optional name | |
| (can be used multiple times) | |
| --ac3 BITRATE set AC-3 audio bitrate to 384|448|640 kbps (default: 384) | |
| --pass-ac3 BITRATE | |
| set passthru AC-3 audio <= 384|448|640 kbps (default: 448) | |
| --no-ac3 don't output multi-channel AC-3 audio | |
| Subtitle options: | |
| --burn TRACK burn subtitle track identified by number | |
| (default: first forced subtitle, if any) | |
| --srt [ENCODING,][OFFSET,][LANGUAGE,][forced,]FILENAME | |
| add subtitle track from SubRip-format \`.srt\` text file | |
| with optional character set encoding (default: latin1) | |
| with optional +/- offset in milliseconds (default: 0) | |
| with optional ISO 639-2 language code (default: und) | |
| with optional forced playback flag | |
| (values before filename can appear in any order) | |
| (can be used multiple times) | |
| Advanced options: | |
| --preset NAME use x264 ...|fast|medium|slow|... preset (default: medium) | |
| (refer to \`HandBrakeCLI --help\` for complete list) | |
| --tune NAME use x264 film|animation|grain|... tune | |
| (refer to \`HandBrakeCLI --help\` for complete list) | |
| --max BITRATE set maximum video bitrate (default: based on input) | |
| (can be exceeded to maintain video quality) | |
| --vbv-bufsize SIZE | |
| set video buffer size (default: 50% of maximum bitrate) | |
| --add-encopts OPTION=VALUE[:OPTION=VALUE...] | |
| specify additional x264 encoder options | |
| --crf FACTOR set constant rate factor (default: 16) | |
| --crf-max FACTOR | |
| set maximum constant rate factor (default: 25) | |
| (use \`--crf-max none\` to disable) | |
| --filter NAME[=SETTINGS] | |
| apply \`HandBrakeCLI\` video filter with optional settings | |
| (refer to \`HandBrakeCLI --help\` for more information) | |
| (can be used multiple times) | |
| --no-auto-detelecine | |
| don't automatically apply \`detelecine\` filter | |
| to 29.97 fps video | |
| --no-auto-burn don't automatically burn first forced subtitle | |
| Passthru options: | |
| --angle, --start-at, --stop-at, --normalize-mix, --drc, --gain, | |
| --no-opencl, --optimize, --use-opencl, --use-hwd, --srt-burn | |
| all passed through to \`HandBrakeCLI\` unchanged | |
| (refer to \`HandBrakeCLI --help\` for more information) | |
| Other options: | |
| --version output version information and exit | |
| Requires \`HandBrakeCLI\` executable in \$PATH. | |
| May require \`mkvpropedit\` executable in \$PATH for \`--srt\` option. | |
| Output and log file are written to current working directory. | |
| EOF | |
| exit 0 | |
| } | |
| syntax_error() { | |
| echo "$program: $1" >&2 | |
| echo "Try \`$program --help\` for more information." >&2 | |
| exit 1 | |
| } | |
| die() { | |
| echo "$program: $1" >&2 | |
| exit ${2:-1} | |
| } | |
| deprecated() { | |
| echo "$program: deprecated option: $1" >&2 | |
| } | |
| deprecated_and_replaced() { | |
| deprecated $1 | |
| echo "$program: use this option instead: $2" >&2 | |
| } | |
| readonly program="$(basename "$0")" | |
| case $1 in | |
| --help) | |
| usage | |
| ;; | |
| --fullhelp) | |
| usage_full | |
| ;; | |
| --version) | |
| about | |
| ;; | |
| esac | |
| debug='' | |
| title='1' | |
| chapters_options='' | |
| container_format='mp4' | |
| container_format_options='--large-file' | |
| preset='medium' | |
| tune_options='' | |
| max_bitrate='' | |
| vbv_bufsize='' | |
| extra_encoder_options='' | |
| rate_factor='16' | |
| max_rate_factor='25' | |
| constrain_to_1280x720='' | |
| frame_rate_options='' | |
| audio_track='1' | |
| extra_audio_track_list='' | |
| extra_audio_track_name_list='' | |
| ac3_bitrate='384' | |
| pass_ac3_bitrate='448' | |
| crop_options='--crop 0:0:0:0' | |
| filter_options='' | |
| auto_detelecine='yes' | |
| subtitle_track='' | |
| auto_burn='yes' | |
| srt_count='0' | |
| srt_forced_index='0' | |
| srt_file_list='' | |
| srt_codeset_list='' | |
| srt_offset_list='' | |
| srt_lang_list='' | |
| tmp='' | |
| default_max_bitrate_1080p='5000' | |
| default_max_bitrate_720p='4000' | |
| default_max_bitrate_480p='2000' | |
| passthru_options='' | |
| while [ "$1" ]; do | |
| case $1 in | |
| --debug) | |
| debug='yes' | |
| ;; | |
| --title) | |
| title="$(printf '%.0f' "$2")" | |
| shift | |
| if (($title < 0)); then | |
| die "invalid title number: $title" | |
| fi | |
| ;; | |
| --chapters) | |
| chapters_options="--chapters $2" | |
| shift | |
| ;; | |
| --mkv) | |
| container_format='mkv' | |
| container_format_options='' | |
| ;; | |
| --m4v) | |
| container_format='m4v' | |
| container_format_options='--large-file' | |
| ;; | |
| --preset|--veryfast|--faster|--fast|--slow|--slower|--veryslow) | |
| if [ "$1" == '--preset' ]; then | |
| preset="$2" | |
| shift | |
| else | |
| preset="${1:2}" | |
| fi | |
| ;; | |
| --tune) | |
| tune_options="$(echo "$tune_options --x264-tune $2" | sed 's/^ *//')" | |
| shift | |
| ;; | |
| --max|--vbv-maxrate|--abr) | |
| [ "$1" == '--abr' ] && deprecated_and_replaced "$1" '--max' | |
| max_bitrate="$(printf '%.0f' "$2")" | |
| shift | |
| if (($max_bitrate < 1)); then | |
| die "invalid maximum video bitrate: $max_bitrate" | |
| fi | |
| ;; | |
| --vbv-bufsize) | |
| vbv_bufsize="$(printf '%.0f' "$2")" | |
| shift | |
| if (($vbv_bufsize < 1)); then | |
| die "invalid video buffer size: $vbv_bufsize" | |
| fi | |
| ;; | |
| --add-encopts) | |
| extra_encoder_options="$2" | |
| shift | |
| ;; | |
| --crf) | |
| rate_factor="$(printf '%.2f' "$2" | sed 's/0*$//;s/\.$//')" | |
| shift | |
| if (($rate_factor < 0)); then | |
| die "invalid constant rate factor: $rate_factor" | |
| fi | |
| ;; | |
| --crf-max) | |
| max_rate_factor="$2" | |
| shift | |
| case $max_rate_factor in | |
| none) | |
| max_rate_factor='' | |
| ;; | |
| *) | |
| max_rate_factor="$(printf '%.2f' "$max_rate_factor" | sed 's/0*$//;s/\.$//')" | |
| if (($max_rate_factor < 0)); then | |
| die "invalid maximum constant rate factor: $max_rate_factor" | |
| fi | |
| ;; | |
| esac | |
| ;; | |
| --hq) | |
| deprecated "$1" | |
| ;; | |
| --720p|--resize) | |
| [ "$1" == '--resize' ] && deprecated_and_replaced "$1" '--720p' | |
| constrain_to_1280x720='yes' | |
| ;; | |
| --rate) | |
| frame_rate_options="--rate $(printf '%.3f' "$2" | sed 's/0*$//;s/\.$//')" | |
| shift | |
| ;; | |
| --audio) | |
| audio_track="$(printf '%.0f' "$2")" | |
| shift | |
| if (($audio_track < 1)); then | |
| die "invalid audio track: $audio_track" | |
| fi | |
| ;; | |
| --add-audio) | |
| extra_audio_track="$(printf '%.0f' "$(echo "$2" | sed 's/,.*$//')")" | |
| if [[ "$2" =~ ',' ]]; then | |
| extra_audio_track_name="$(echo "$2" | sed 's/^[^,]*,//')" | |
| else | |
| extra_audio_track_name='' | |
| fi | |
| shift | |
| if (($extra_audio_track < 1)); then | |
| die "invalid additional audio track: $extra_audio_track" | |
| fi | |
| extra_audio_track_list="${extra_audio_track_list},$extra_audio_track" | |
| extra_audio_track_name_list="${extra_audio_track_name_list},$extra_audio_track_name" | |
| ;; | |
| --ac3) | |
| ac3_bitrate="$2" | |
| shift | |
| case $ac3_bitrate in | |
| 384|448|640) | |
| ;; | |
| *) | |
| syntax_error "unsupported AC-3 audio bitrate: $ac3_bitrate" | |
| ;; | |
| esac | |
| ;; | |
| --pass-ac3) | |
| pass_ac3_bitrate="$2" | |
| shift | |
| case $pass_ac3_bitrate in | |
| 384|448|640) | |
| ;; | |
| *) | |
| syntax_error "unsupported AC-3 audio passthru bitrate: $pass_ac3_bitrate" | |
| ;; | |
| esac | |
| ;; | |
| --no-ac3|--no-surround) | |
| [ "$1" == '--no-surround' ] && deprecated_and_replaced "$1" '--no-ac3' | |
| ac3_bitrate='' | |
| ;; | |
| --crop) | |
| crop="$2" | |
| shift | |
| if [ "$crop" == 'auto' ]; then | |
| crop_options='' | |
| else | |
| crop_options="--crop $crop" | |
| fi | |
| ;; | |
| --filter) | |
| filter="$2" | |
| shift | |
| filter_name="$(echo "$filter" | sed 's/=.*$//')" | |
| case $filter_name in | |
| deinterlace|decomb|denoise|nlmeans|nlmeans-tune|deblock|rotate|grayscale) | |
| ;; | |
| detelecine) | |
| auto_detelecine='' | |
| ;; | |
| *) | |
| syntax_error "unsupported video filter: $filter_name" | |
| ;; | |
| esac | |
| filter_options="$filter_options --$filter" | |
| ;; | |
| --detelecine) | |
| deprecated_and_replaced "$1" '--filter detelecine' | |
| filter_options="$filter_options --detelecine" | |
| auto_detelecine='' | |
| ;; | |
| --no-auto-detelecine) | |
| auto_detelecine='' | |
| ;; | |
| --burn) | |
| subtitle_track="$(printf '%.0f' "$2")" | |
| shift | |
| if (($subtitle_track < 1)); then | |
| die "invalid subtitle track: $subtitle_track" | |
| fi | |
| auto_burn='' | |
| ;; | |
| --no-auto-burn) | |
| auto_burn='' | |
| ;; | |
| --srt) | |
| srt_file="$2" | |
| shift | |
| srt_count="$((srt_count + 1))" | |
| srt_lang='' | |
| srt_offset='' | |
| srt_codeset='' | |
| while [[ "$srt_file" =~ ',' ]]; do | |
| srt_prefix="$(echo "$srt_file" | sed 's/,.*$//')" | |
| if (($srt_forced_index < $srt_count )) && [ "$srt_prefix" == 'forced' ]; then | |
| srt_forced_index="$srt_count" | |
| srt_file="$(echo "$srt_file" | sed 's/^[^,]*,//')" | |
| elif [ ! "$srt_lang" ] && [[ "$srt_prefix" =~ ^[a-z][a-z][a-z]$ ]]; then | |
| srt_lang="$srt_prefix" | |
| srt_file="$(echo "$srt_file" | sed 's/^[^,]*,//')" | |
| elif [ ! "$srt_offset" ] && [[ "$srt_prefix" =~ ^[+-]?[0-9][0-9]*$ ]]; then | |
| srt_offset="$(echo "$srt_prefix" | sed 's/^+//')" | |
| srt_file="$(echo "$srt_file" | sed 's/^[^,]*,//')" | |
| elif [ ! "$srt_codeset" ] && [[ "$srt_prefix" =~ ^[0-9A-Za-z] ]] && [[ ! "$srt_prefix" =~ [\ /\\] ]] && [ ! -f "$srt_file" ]; then | |
| srt_codeset="$srt_prefix" | |
| srt_file="$(echo "$srt_file" | sed 's/^[^,]*,//')" | |
| else | |
| break | |
| fi | |
| done | |
| # Force filename expansion with `eval` but first escape the string | |
| # to hide ", $, &, ', (, ), ;, <, >, \, ` and |. | |
| srt_file="$(eval echo "$(echo "$srt_file" | sed 's/\(["$&'\''();<>\\`|]\)/\\\1/g')")" | |
| if [ ! "$srt_file" ]; then | |
| syntax_error "missing subtitle filename" | |
| fi | |
| if [ ! -f "$srt_file" ]; then | |
| die "subtitle not found: $srt_file" | |
| fi | |
| if [ ! "$tmp" ]; then | |
| trap '[ "$tmp" ] && rm -rf "$tmp"' 0 | |
| trap '[ "$tmp" ] && rm -rf "$tmp"; exit 1' SIGHUP SIGINT SIGQUIT SIGTERM | |
| tmp="/tmp/${program}.$$" | |
| mkdir -m 700 "$tmp" || exit 1 | |
| fi | |
| tmp_srt_file_link="$tmp/subtitle-$srt_count.srt" | |
| ln -s "$(cd "$(dirname "$srt_file")" 2>/dev/null && echo "$(pwd)/$(basename "$srt_file")")" "$tmp_srt_file_link" | |
| srt_file_list="$srt_file_list,$tmp_srt_file_link" | |
| srt_codeset_list="$srt_codeset_list,$srt_codeset" | |
| srt_offset_list="$srt_offset_list,$srt_offset" | |
| srt_lang_list="$srt_lang_list,$srt_lang" | |
| ;; | |
| --big|--better) | |
| [ "$1" == '--better' ] && deprecated_and_replaced "$1" '--big' | |
| default_max_bitrate_1080p='8000' | |
| default_max_bitrate_720p='6000' | |
| default_max_bitrate_480p='3000' | |
| ac3_bitrate='640' | |
| ;; | |
| --angle|--start-at|--stop-at|--normalize-mix|--drc|--gain) | |
| passthru_options="$(echo "$passthru_options $1 $2" | sed 's/^ *//')" | |
| shift | |
| ;; | |
| --no-opencl|--optimize|--use-opencl|--use-hwd) | |
| passthru_options="$(echo "$passthru_options $1" | sed 's/^ *//')" | |
| ;; | |
| --srt-burn) | |
| srt_number="$(printf '%.0f' "$2" 2>/dev/null)" | |
| if (($srt_number < 1)); then | |
| passthru_options="$(echo "$passthru_options $1" | sed 's/^ *//')" | |
| else | |
| passthru_options="$(echo "$passthru_options $1 $2" | sed 's/^ *//')" | |
| shift | |
| fi | |
| ;; | |
| -*) | |
| syntax_error "unrecognized option: $1" | |
| ;; | |
| *) | |
| break | |
| ;; | |
| esac | |
| shift | |
| done | |
| readonly input="$1" | |
| if [ ! "$input" ]; then | |
| syntax_error 'too few arguments' | |
| fi | |
| if [ ! -e "$input" ]; then | |
| die "input not found: $input" | |
| fi | |
| if ! $(which HandBrakeCLI >/dev/null); then | |
| die 'executable not in $PATH: HandBrakeCLI' | |
| fi | |
| if [ "$container_format" == 'mkv' ] && (($srt_forced_index > 0)) && ! $(which mkvpropedit >/dev/null); then | |
| die 'executable not in $PATH: mkvpropedit' | |
| fi | |
| title_options="--title $title" | |
| if [ "$title" == '0' ]; then | |
| echo "Scanning: $input" >&2 | |
| fi | |
| # Leverage `HandBrakeCLI` scan mode to extract all file- or directory-based | |
| # media information. Significantly speed up scan with `--previews 2:0` option | |
| # and argument. | |
| # | |
| readonly media_info="$(HandBrakeCLI $title_options --scan --previews 2:0 --input "$input" 2>&1)" | |
| if [ "$debug" ]; then | |
| echo "$media_info" >&2 | |
| fi | |
| if [ "$title" == '0' ]; then | |
| # Extract and reformat summary from media information for title listing. | |
| # | |
| readonly formatted_titles_info="$(echo "$media_info" | | |
| sed -n '/^+ title /,$p' | | |
| sed '/^ + autocrop: /d;/^ + support /d;/^HandBrake/,$d;s/\(^ *\)+ \(.*$\)/\1\2/')" | |
| if [ ! "$formatted_titles_info" ]; then | |
| die "no media title available in: $input" | |
| fi | |
| echo "$formatted_titles_info" | |
| exit | |
| elif [ "$title" == '1' ]; then | |
| title_options='' | |
| fi | |
| if [ ! "$(echo "$media_info" | sed -n '/^+ title /,$p')" ]; then | |
| echo "$program: \`title $title\` not found in: $input" >&2 | |
| echo "Try \`$program --title 0 [FILE|DIRECTORY]\` to scan for titles." >&2 | |
| echo "Try \`$program --help\` for more information." >&2 | |
| exit 1 | |
| fi | |
| readonly output="$(basename "$input" | sed 's/\.[^.]\{1,\}$//').$container_format" | |
| if [ -e "$output" ]; then | |
| die "output file already exists: $output" | |
| fi | |
| readonly size_array=($(echo "$media_info" | sed -n 's/^ + size: \([0-9]\{1,\}\)x\([0-9]\{1,\}\).*$/\1 \2/p')) | |
| if ((${#size_array[*]} != 2)); then | |
| die "no video size information in: $input" | |
| fi | |
| readonly width="${size_array[0]}" | |
| readonly height="${size_array[1]}" | |
| # Limit reference frames for playback compatibility with popular devices. | |
| # | |
| case $preset in | |
| slower|veryslow|placebo) | |
| reference_frames='5' | |
| ;; | |
| *) | |
| reference_frames='' | |
| ;; | |
| esac | |
| level='' | |
| size_options='--strict-anamorphic' | |
| # Limit `x264` video buffer verifier (VBV) size to values appropriate for | |
| # H.264 level with High profile: | |
| # | |
| # 25000 for level 4.0 (e.g. Blu-ray input) | |
| # 17500 for level 3.1 (e.g. 720p input) | |
| # 12500 for level 3.0 (e.g. DVD input) | |
| # | |
| if (($width > 1280)) || (($height > 720)); then | |
| if [ ! "$constrain_to_1280x720" ]; then | |
| vbv_maxrate="$default_max_bitrate_1080p" | |
| max_bufsize='25000' | |
| case $preset in | |
| slow|slower|veryslow|placebo) | |
| # Force H.264 level to 4.0 when using 5 reference frames. | |
| # Which causes HandBrakeCLI to emit this message: | |
| # | |
| # x264 [warning]: DPB size (5 frames, 39000 mbs) > level limit (4 frames, 32768 mbs) | |
| # | |
| # ...but it can be ignored since the VBV maximum rate is | |
| # usually low. | |
| # | |
| level='4.0' | |
| ;; | |
| esac | |
| else | |
| vbv_maxrate="$default_max_bitrate_720p" | |
| max_bufsize='17500' | |
| size_options='--maxWidth 1280 --maxHeight 720 --loose-anamorphic' | |
| fi | |
| elif (($width > 720)) || (($height > 576)); then | |
| vbv_maxrate="$default_max_bitrate_720p" | |
| max_bufsize='17500' | |
| else | |
| vbv_maxrate="$default_max_bitrate_480p" | |
| max_bufsize='12500' | |
| fi | |
| if [ "$max_bitrate" ]; then | |
| vbv_maxrate="$max_bitrate" | |
| if (($vbv_maxrate > $max_bufsize)); then | |
| vbv_maxrate="$max_bufsize" | |
| fi | |
| elif [ -f "$input" ]; then | |
| readonly duration_array=($(echo "$media_info" | | |
| sed -n 's/^ + duration: \([0-9][0-9]\):\([0-9][0-9]\):\([0-9][0-9]\)$/ \1 \2 \3 /p' | | |
| sed 's/ 0/ /g')) | |
| if ((${#duration_array[*]} == 3)); then | |
| # Calculate total bitrate from file size in bits divided by video | |
| # duration in seconds. | |
| # | |
| bitrate="$((($(stat -L -f %z "$input") * 8) / ((duration_array[0] * 60 * 60) + (duration_array[1] * 60) + duration_array[2])))" | |
| if [ "$bitrate" ]; then | |
| # Convert to kbps and round to nearest thousand. | |
| # | |
| bitrate="$((((bitrate / 1000) / 1000) * 1000))" | |
| if (($bitrate < $vbv_maxrate)); then | |
| readonly min_bitrate="$((vbv_maxrate / 2))" | |
| if (($bitrate < $min_bitrate)); then | |
| vbv_maxrate="$min_bitrate" | |
| else | |
| vbv_maxrate="$bitrate" | |
| fi | |
| fi | |
| fi | |
| fi | |
| fi | |
| if [ "$vbv_bufsize" ]; then | |
| if (($vbv_bufsize > $max_bufsize)); then | |
| vbv_bufsize="$max_bufsize" | |
| fi | |
| else | |
| # The `x264` video buffer verifier (VBV) size must always be less than the | |
| # maximum rate to maintain quality in constant rate factor (CRF) mode. | |
| # | |
| vbv_bufsize="$((vbv_maxrate / 2))" | |
| fi | |
| # First extract frame rate from media information summary. If that frame rate | |
| # is `23.976` then it's possible "real" frame rate is `29.97`. For file input, | |
| # re-extract frame rate from stream information if available. | |
| # | |
| frame_rate="$(echo "$media_info" | sed -n 's/^ + size: .*, \([0-9]\{1,\}\.[.0-9]\{1,\}\) fps$/\1/p')" | |
| if [ "$frame_rate" == '23.976' ] && [ -f "$input" ]; then | |
| readonly video_track_info="$(echo "$media_info" | | |
| sed -n '/^ Stream #[^:]\{1,\}: Video: /p' | | |
| sed -n 1p)" | |
| if [ "$video_track_info" ]; then | |
| readonly raw_frame_rate="$(echo "$video_track_info" | sed -n 's/^.*, \([0-9.]\{1,\}\) fps, .*$/\1/p')" | |
| if [ "$raw_frame_rate" ]; then | |
| frame_rate="$raw_frame_rate" | |
| fi | |
| fi | |
| fi | |
| if [ ! "$frame_rate" ]; then | |
| die "no video frame rate information in: $input" | |
| fi | |
| # Allow user to explicitly choose output frame rate. If none is chosen and | |
| # input frame rate is `29.97` then force output frame rate of `23.976`. | |
| # Otherwise set peak frame rate to `30` so HandBrakeCLI` can dynamically | |
| # determine output frame rate. | |
| # | |
| if [ ! "$frame_rate_options" ]; then | |
| if [ "$auto_detelecine" ] && [[ "$frame_rate" =~ '29.97' ]]; then | |
| frame_rate_options='--rate 23.976' | |
| else | |
| frame_rate_options='--rate 30 --pfr' | |
| fi | |
| fi | |
| readonly all_audio_tracks_info="$(echo "$media_info" | | |
| sed -n '/^ + audio tracks:$/,/^ + subtitle tracks:$/p' | | |
| sed -n '/^ + /p')" | |
| if [ ! "$all_audio_tracks_info" ]; then | |
| die "no audio track information in: $input" | |
| fi | |
| readonly audio_track_info="$(echo "$all_audio_tracks_info" | sed -n ${audio_track}p)" | |
| if [ ! "$audio_track_info" ]; then | |
| die "\`audio $audio_track\` track not found in: $input" | |
| fi | |
| audio_track_channels="$(echo "$audio_track_info" | | |
| sed -n 's/^[^(]\{1,\} ([^(]\{1,\}) (\([^(]\{1,\}\)) .*$/\1/p' | | |
| sed 's/ ch$//')" | |
| case $audio_track_channels in | |
| 'Dolby Surround') | |
| audio_track_channels='2' | |
| ;; | |
| [0-9]*) | |
| high_channels="$(echo "$audio_track_channels" | sed 's/\.[0-9]\{1,\}$//')" | |
| low_channels="$(echo "$audio_track_channels" | sed 's/^[0-9]\{1,\}\.//')" | |
| if [ "$high_channels" ] && [ "$low_channels" ]; then | |
| audio_track_channels="$((high_channels + low_channels))" | |
| fi | |
| ;; | |
| *) | |
| die "bad audio channel information in: $input" | |
| ;; | |
| esac | |
| if [ ! "$audio_track_channels" ]; then | |
| die "no audio channel information in: $input" | |
| fi | |
| # For MP4 output, transcode audio input first into Advanced Audio Coding (AAC) | |
| # format. Add second audio track in Dolby Digital (AC-3) format if audio input | |
| # is multi-channel. | |
| # | |
| # Handle MKV output like MP4, but place any AC-3 format track first. | |
| # | |
| # Transcode stereo or mono audio using `HandBrakeCLI` default behavior, at 160 | |
| # or 80 kbps in AAC format. Use existing audio if already in that format. | |
| # | |
| # Transcode multi-channel audio input in AC-3 format. Use existing audio if | |
| # already in that format. Allow user to disable AC-3 format output, change | |
| # bitrate, or allow larger input bitrate to pass through without transcoding. | |
| # | |
| audio_track_list="$audio_track" | |
| audio_track_name_list='' | |
| if [ "$ac3_bitrate" ] && (($audio_track_channels > 2)); then | |
| audio_track_list="$audio_track,$audio_track" | |
| audio_track_name_list=',' | |
| readonly help="$(HandBrakeCLI --help 2>/dev/null)" | |
| if $(echo "$help" | grep -q ca_aac); then | |
| aac_encoder='ca_aac' | |
| elif $(echo "$help" | grep -q av_aac); then | |
| aac_encoder='av_aac' | |
| elif $(echo "$help" | grep -q ffaac); then | |
| aac_encoder='ffaac' | |
| else | |
| aac_encoder='faac' | |
| fi | |
| if $(echo "$help" | grep -q ffac3); then | |
| ac3_encoder='ffac3' | |
| else | |
| ac3_encoder='ac3' | |
| fi | |
| readonly audio_track_bitrate="$(echo "$audio_track_info" | sed -n 's/^.* \([0-9]\{1,\}\)bps$/\1/p')" | |
| if (($pass_ac3_bitrate < $ac3_bitrate)); then | |
| pass_ac3_bitrate="$ac3_bitrate" | |
| fi | |
| if [[ "$audio_track_info" =~ '(AC3)' ]] && ((($audio_track_bitrate / 1000) <= $pass_ac3_bitrate)); then | |
| if [ "$container_format" == 'mkv' ]; then | |
| audio_options="--aencoder copy:ac3,$aac_encoder" | |
| else | |
| audio_options="--aencoder $aac_encoder,copy:ac3" | |
| fi | |
| elif [ "$container_format" == 'mkv' ]; then | |
| audio_options="--aencoder $ac3_encoder,$aac_encoder --ab $ac3_bitrate," | |
| else | |
| audio_options="--aencoder $aac_encoder,$ac3_encoder --ab ,$ac3_bitrate" | |
| fi | |
| elif [[ "$audio_track_info" =~ '(aac)' ]]; then | |
| audio_options='--aencoder copy:aac' | |
| else | |
| audio_options='' | |
| fi | |
| if [ "$extra_audio_track_list" ]; then | |
| audio_options="--audio ${audio_track_list}$extra_audio_track_list $audio_options --aname" | |
| audio_track_name_list="${audio_track_name_list}$extra_audio_track_name_list" | |
| else | |
| if (($audio_track > 1)); then | |
| audio_options="--audio $audio_track $audio_options" | |
| fi | |
| audio_track_name_list='' | |
| fi | |
| if [ "$auto_detelecine" ] && [[ "$frame_rate" =~ '29.97' ]]; then | |
| filter_options="$filter_options --detelecine" | |
| fi | |
| filter_options="$(echo "$filter_options" | sed 's/^ *//;s/ *$//;s/ \{1,\}/ /g')" | |
| readonly all_subtitle_tracks_info="$(echo "$media_info" | | |
| sed -n '/^ + subtitle tracks:$/,$p' | | |
| sed -n '/^ + /p')" | |
| if [ "$subtitle_track" ] && [ ! "$all_subtitle_tracks_info" ]; then | |
| die "no subtitle track information in: $input" | |
| fi | |
| # For file input, automatically find first "forced" subtitle and select it for | |
| # burning into video. Allow user to disable this behavior. | |
| # | |
| if [ "$auto_burn" ] && [ -f "$input" ]; then | |
| readonly raw_subtitle_tracks_info="$(echo "$media_info" | sed -n '/^ Stream #[^:]\{1,\}: Subtitle: /p')" | |
| if [ "$raw_subtitle_tracks_info" ]; then | |
| readonly raw_subtitle_tracks_count="$(echo "$raw_subtitle_tracks_info" | wc -l | sed 's/ //g')" | |
| if [ "$raw_subtitle_tracks_count" == "$(echo "$all_subtitle_tracks_info" | wc -l | sed 's/ //g')" ]; then | |
| index='1' | |
| while ((index <= $raw_subtitle_tracks_count)); do | |
| if [[ "$(echo "$raw_subtitle_tracks_info" | sed -n ${index}p)" =~ '(forced)' ]]; then | |
| subtitle_track="$index" | |
| break | |
| fi | |
| index="$((index + 1))" | |
| done | |
| fi | |
| fi | |
| fi | |
| subtitle_options='' | |
| if [ "$subtitle_track" ]; then | |
| readonly subtitle_track_info="$(echo "$all_subtitle_tracks_info" | sed -n ${subtitle_track}p)" | |
| if [ ! "$subtitle_track_info" ]; then | |
| die "\`subtitle $subtitle_track\` track not found in: $input" | |
| fi | |
| subtitle_options="--subtitle $subtitle_track --subtitle-burned" | |
| fi | |
| if (($srt_count > 0)); then | |
| srt_options="--srt-file $(echo "$srt_file_list" | sed 's/^,//')" | |
| srt_codeset_list="$(echo "$srt_codeset_list" | sed 's/^,//')" | |
| if [ "$srt_codeset_list" ]; then | |
| srt_options="$srt_options --srt-codeset $srt_codeset_list" | |
| fi | |
| srt_offset_list="$(echo "$srt_offset_list" | sed 's/^,//')" | |
| if [ "$srt_offset_list" ]; then | |
| srt_options="$srt_options --srt-offset $srt_offset_list" | |
| fi | |
| srt_lang_list="$(echo "$srt_lang_list" | sed 's/^,//')" | |
| if [ "$srt_lang_list" ]; then | |
| srt_options="$srt_options --srt-lang $srt_lang_list" | |
| fi | |
| if (($srt_forced_index > 0)); then | |
| srt_options="$srt_options --srt-default $srt_forced_index" | |
| fi | |
| else | |
| srt_options='' | |
| fi | |
| if [ "$preset" == 'medium' ]; then | |
| preset_options='' | |
| else | |
| preset_options="--x264-preset $preset" | |
| fi | |
| encoder_options="vbv-maxrate=$vbv_maxrate:vbv-bufsize=$vbv_bufsize" | |
| if [ "$reference_frames" ]; then | |
| encoder_options="ref=$reference_frames:$encoder_options" | |
| fi | |
| if [ "$max_rate_factor" ]; then | |
| encoder_options="$encoder_options:crf-max=$max_rate_factor" | |
| fi | |
| if [ "$level" ]; then | |
| encoder_options="$encoder_options:level=$level" | |
| fi | |
| if [ "$extra_encoder_options" ]; then | |
| encoder_options="$(echo "$encoder_options:$extra_encoder_options" | sed 's/:*$//;s/:\{1,\}/:/g')" | |
| fi | |
| if [ "$debug" ]; then | |
| echo "title_options = $title_options" >&2 | |
| echo "chapters_options = $chapters_options" >&2 | |
| echo "container_format_options = $container_format_options" >&2 | |
| echo "preset_options = $preset_options" >&2 | |
| echo "tune_options = $tune_options" >&2 | |
| echo "encoder_options = $encoder_options" >&2 | |
| echo "rate_factor = $rate_factor" >&2 | |
| echo "frame_rate_options = $frame_rate_options" >&2 | |
| echo "audio_options = $audio_options" >&2 | |
| echo "audio_track_name_list = $audio_track_name_list" >&2 | |
| echo "crop_options = $crop_options" >&2 | |
| echo "size_options = $size_options" >&2 | |
| echo "filter_options = $filter_options" >&2 | |
| echo "subtitle_options = $subtitle_options" >&2 | |
| echo "srt_options = $srt_options" >&2 | |
| echo "passthru_options = $passthru_options" >&2 | |
| echo "input = $input" >&2 | |
| echo "output = $output" >&2 | |
| exit | |
| fi | |
| echo "Transcoding: $input" >&2 | |
| time { | |
| HandBrakeCLI \ | |
| $title_options \ | |
| $chapters_options \ | |
| --markers \ | |
| $container_format_options \ | |
| --encoder x264 \ | |
| $preset_options \ | |
| $tune_options \ | |
| --encopts $encoder_options \ | |
| --quality $rate_factor \ | |
| $frame_rate_options \ | |
| $audio_options "$audio_track_name_list" \ | |
| $crop_options \ | |
| $size_options \ | |
| $filter_options \ | |
| $subtitle_options \ | |
| $srt_options \ | |
| $passthru_options \ | |
| --input "$input" \ | |
| --output "$output" \ | |
| 2>&1 | tee -a "${output}.log" | |
| if [ "$container_format" == 'mkv' ] && (($srt_forced_index > 0)) && [ -f "$output" ]; then | |
| mkvpropedit --quiet --edit track:s$srt_forced_index --set flag-forced=1 "$output" || exit 1 | |
| fi | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment