mirror of https://github.com/captn3m0/Scripts.git
43 lines
1.3 KiB
Bash
Executable File
43 lines
1.3 KiB
Bash
Executable File
#!/bin/bash
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# Source: https://gist.github.com/vi/2fe3eb63383fcfdad7483ac7c97e9deb
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IN=$1
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OUT=$2
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true ${SD_PARAMS:="-55dB:d=0.3"};
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true ${MIN_FRAGMENT_DURATION:="20"};
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export MIN_FRAGMENT_DURATION
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if [ -z "$OUT" ]; then
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echo "Usage: split_by_silence.sh input_media.mp4 output_template_%03d.mkv"
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echo "Depends on FFmpeg, Bash, Awk, Perl 5. Not tested on Mac or Windows."
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echo ""
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echo "Environment variables (with their current values):"
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echo " SD_PARAMS=$SD_PARAMS Parameters for FFmpeg's silencedetect filter: noise tolerance and minimal silence duration"
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echo " MIN_FRAGMENT_DURATION=$MIN_FRAGMENT_DURATION Minimal fragment duration"
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exit 1
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fi
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echo "Determining split points..." >& 2
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SPLITS=$(
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ffmpeg -v warning -i "$IN" -af silencedetect,ametadata=mode=print:file=-:key=lavfi.silence_start -vn -sn -f s16le -y /dev/null \
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| grep lavfi.silence_start= \
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| cut -f 2-2 -d= \
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| perl -ne '
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our $prev;
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INIT { $prev = 0.0; }
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chomp;
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if (($_ - $prev) >= $ENV{MIN_FRAGMENT_DURATION}) {
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print "$_,";
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$prev = $_;
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}
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' \
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| sed 's!,$!!'
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)
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echo "Splitting points are $SPLITS"
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ffmpeg -v warning -i "$IN" -c copy -map 0 -f segment -segment_times "$SPLITS" "$OUT" |