88 lines
2.4 KiB
Bash
88 lines
2.4 KiB
Bash
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#!/usr/bin/env bash
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set -euo pipefail
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if $# -ne 1; then
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echo "Please provide the path to one video file"
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$(exit 1); echo "$?"
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fi
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echo "Getting black screen times"
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# reads the output of ffprobe into an array
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mapfile -t timings < <(ffprobe -f lavfi -i "movie=$1,blackdetect[out0]" -show_entries frame_tags=lavfi.black_start,lavfi.black_end -of default=nw=1 -v quiet -print_format flat)
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#timings=(frames.frame.0.tags.lavfi_black_start="0.389" frames.frame.1.tags.lavfi_black_end="0.431" frames.frame.255.tags.lavfi_black_start="11.025" frames.frame.256.tags.lavfi_black_end="11.067")
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seltimings=()
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for i in "${!timings[@]}"; do
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# cut timing to only output the time
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timing="$(echo ${timings[$i]} | cut -d= -f2 | tr -d '"')"
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if [ $((${i}%2)) -eq 0 ]; then
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starttime=$timing
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#echo "Start time: $starttime"
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else
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endtime=$timing
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#echo "End time: $endtime"
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timediff="$(echo "(($endtime - $starttime))" | bc -l)"
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#echo "Difference: $timediff"
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# check for sections longer than 2 seconds
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if (( $(echo "$timediff > 2" | bc -l) )); then
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echo "Start time: $starttime"
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echo "End time: $endtime"
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echo "Difference: $timediff"
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seltimings+=($starttime)
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seltimings+=($endtime)
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fi
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fi
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done
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for i in "${seltimings[@]}"; do
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echo $i
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done
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# track split files created
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splitfiles=()
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# build command
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command="ffmpeg -i "$1" -c copy -map 0 -t ${seltimings[0]} "1.mkv""
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splitfiles+=("1.mkv")
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echo "file 1.mkv" > "list.txt"
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tmp=$(( ${#seltimings[@]} - 2 ))
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length=$(( $tmp / 2 ))
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selector=1
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n=0
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while [[ $n -lt $length ]]; do
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n=$((n+1))
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up=$(( $selector + 1 ))
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low=$selector
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command+=" -c copy -map 0 -ss ${seltimings[$low]} -t $(echo "${seltimings[$up]} - ${seltimings[$low]}" | bc -l) "$(( $n + 1 )).mkv""
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splitfiles+=("$(( $n + 1 )).mkv")
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echo "file $(( $n + 1 )).mkv" >> "list.txt"
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selector=$(( $selector + 2 ))
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done
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lastsel=$(( ${#seltimings[@]} - 1 ))
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command+=" -c copy -map 0 -ss ${seltimings[$lastsel]} "$(( $n + 2 )).mkv""
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splitfiles+=("$(( $n + 2 )).mkv")
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echo "file $(( $n + 2)).mkv" >> "list.txt"
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echo "Running command"
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echo "$command" | tee command.sh
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bash command.sh
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ffmpeg -f concat -i "list.txt" -c copy -map 0 "out-${1}"
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# cleanup
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rm command.sh
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rm list.txt
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for file in ${splitfiles[@]}; do
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rm "$file"
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done
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$(exit 0); echo "$?"
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