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scripts
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Keep stuff in README

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Nemo 2020-10-26 23:22:24 +05:30
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commit 45d32dff7d
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1
README.md
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@ -68,6 +68,7 @@ This lives in my `~/projects/scripts` directory and is added to my `$PATH`. Not
| plutil.pl | implementation of binary/UTF-8 (text) XML conversion of plist files |
| port_block_check.sh | Run this behind a firewall to see if there are any outbound ports that are blocked |
| prettyping | Third-party, runs a nice graphical ping |
| pulse-recorder.py | Records a [pulse audio stream easily](https://gist.github.com/ramast/c47bd5e57586e9c2deb74975e27089f0/).
| resty | Third-party. A tiny command line REST interface for bash and zsh. |
| reverse_video.sh | Reverse a video |
| rip-git.pl | Third-party. Brute force and download a publicly exposed .git directory |

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