mirror of https://github.com/captn3m0/Scripts.git
66 lines
2.0 KiB
Bash
Executable File
66 lines
2.0 KiB
Bash
Executable File
#!/bin/bash
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IFS=$'\n\t'
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# Author: http://crunchbang.org/forums/viewtopic.php?id=38748#p414992
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# m4bronto
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# https://gist.github.com/dcondrey/469e2850e7f88ac198e8c3ff111bda7c
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# Modified to support a chapters.txt file with sequential list of chapter names
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# Run as split-audio-by-chapters file.m4a [chapters.txt]
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# Output files are sequential and generated
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# https://stackoverflow.com/a/3352015
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trim() {
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local var="$*"
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# remove leading whitespace characters
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var="${var#"${var%%[![:space:]]*}"}"
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# remove trailing whitespace characters
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var="${var%"${var##*[![:space:]]}"}"
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echo -n "$var"
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}
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CHAPTER_INDEX=0
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if [ -f "$2" ]; then
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CHAPTERS_FILE_PASSED=1
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echo "Reading chapters from $2"
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readarray CHAPTERS < "$2"
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IFS=$'\n\r'
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IFS=$'\n\t'
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else
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CHAPTERS_FILE_PASSED=0
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fi
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ffmpeg -i "$1" 2> /tmp/ffmpeg.txt
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while read -r first _ _ start _ end; do
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unset IFS
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if [[ "$first" = "Chapter" ]]; then
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read -r
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read -r _ _ CHAPTER_TITLE
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REAL_CHAPTER_INDEX=$((CHAPTER_INDEX+1))
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CHAPTER_INDEX_PADDED=$(printf "%03d" "${REAL_CHAPTER_INDEX}")
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# If we are using a chapters.txt that is valid
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if ((CHAPTERS_FILE_PASSED=="1")) ; then
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CHAPTER_TITLE=${CHAPTERS[$CHAPTER_INDEX]}
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fi
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FILENAME="${CHAPTER_INDEX_PADDED} - $(trim "$CHAPTER_TITLE").m4a"
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# -vsync 2 = Frames are passed through with their timestamp or dropped so as to prevent 2 frames from having the same timestamp.
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# -sn = no subtitles
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# -dn = no data stream
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# -vn = no video stream
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# -metadata title= put in a chapter title
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# -acodec copy = copy the audio stream
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# +faststart = Relocating this moov atom to the beginning of the file can facilitate playback before the file is completely downloaded by the client.
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ffmpeg -hide_banner -loglevel panic \
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-movflags +faststart \
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-vsync 2 -sn -dn -vn -i "$1" -ss "${start%?}" -to "$end" -metadata title="$CHAPTER_TITLE" -dn -vn -sn -acodec copy "$FILENAME" </dev/null
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((CHAPTER_INDEX++))
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fi
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done </tmp/ffmpeg.txt
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