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dotfiles/.functions.zsh

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# Copies a section from a video using ffmpeg.
# extract-clip <input file> <start timestamp> <end timestamp> <output file>
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extract-clip () {
ffmpeg -ss "$2" -i "$1" -to "$3" -c copy "$4"
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}
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# Creates a new signed, annotated git tag.
# gtag <version number>
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gtag () {
git tag -s -a "$1" -m "Version $1"
}
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# Tries to find a feed URL for any given URLs.
# get-feed-url <url ...>
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get-feed-url () {
for input_url in "$@"; do
html=$(curl -fsLS "$input_url")
echo $(echo $html | select-html '[property="og:title"]' -a "content")
echo $(echo $html | select-html '[rel="alternate"][type]' -a "href")
echo
done
}
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# Converts any given files to 128K Opus using ffmpeg.
# to-opus <file ...>
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to-opus () {
for input_file in "$@"; do
output_file="${input_file%.*}.opus"
ffmpeg -i "$input_file" -c:a libopus -b:a 128K "$output_file"
done
}