48 lines
795 B
Bash
48 lines
795 B
Bash
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#!/bin/sh
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rate=5
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scale="scale=-1:-1:flags=lanczos"
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usage() {
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echo "Usage: $0 [-i <string>] [-s <integer>] [-r <integer>]"
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echo "Options:"
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echo " i input file"
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echo " s width of the resulting gif"
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echo " r frame rate of the resulting gif"
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}
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while getopts "s: r: i: h" args; do
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case "$args" in
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i)
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file_name=${OPTARG}
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;;
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s)
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echo $OPTARG
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if [[ $OPTARG =~ ^[0-9]+$ ]]; then
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scale="scale=${OPTARG}:-1:flags=lanczos"
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else
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echo "Error: -s expects an integer." >&2
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exit 1
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fi
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;;
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r)
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if [[ $OPTARG =~ ^[0-9]+$ ]]; then
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rate=${OPTARG}
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else
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echo "Error: -r expects an integer." >&2
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exit 1
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fi
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;;
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h | * | \?)
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usage
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exit
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;;
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esac
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done
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if [ $OPTIND -eq 1 ]; then
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usage
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exit
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fi
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ffmpeg -r ${rate} -i ${file_name}-%d.jpg -vf "${scale}" ${file_name}.gif
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