135 lines
4.3 KiB
Bash
135 lines
4.3 KiB
Bash
cite about-plugin
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about-plugin 'video to gif helper functions'
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# From https://gist.github.com/SlexAxton/4989674#comment-1199058
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# Renamed gifify to v2gif to go avoid clobbering https://github.com/jclem/gifify
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# Requirements (Mac OS X using Homebrew): brew install ffmpeg giflossy imagemagick
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# Requirements on Ubuntu: sudo apt install ffmpeg imagemagick ; plus install https://github.com/pornel/giflossy
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# Optional: if lossy is not important, Ubuntu has gifsicle packaged for apt-get, instead of giflossy
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# Optional: gifski (from `brew install gifski` or github.com/ImageOptim/gifski)
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# for high quality huge files.
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function v2gif {
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about 'Converts a .mov/.avi/.mp4 file into an into an animated GIF.'
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group 'gif'
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param '1: MOV/AVI/MP4 file name(s)'
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param '2: -w <num> ; Optional: max width in pixels'
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param '3: -l <num> ; Optional: extra lossy level for smaller files (80-200 make sense, needs giflossy instead of gifsicle)'
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param '4: -h ; Optional: high quality using gifski (installed seperately) - overrides "--lossy" above!'
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param '5: -d ; Optional: delete the original video file if succeeded'
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param '6: -t ; Optional: Tag the result with quality stamp for comparison use'
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param '7: -f <num> ; Optional: Change number of frames per second (default 10)'
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param '8: -a <num> ; Optional: Alert if resulting file is over <num> kilobytes (default is 5000, 0 turns off)'
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example '$ v2gif foo.mov'
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example '$ v2gif foo.mov -w 600'
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example '$ v2gif -l 100 -d *.mp4'
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example '$ v2gif -dh *.avi'
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example '$ v2gif -thw 600 *.avi *.mov'
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# Parse the options
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args=$(getopt -l "alert:" -l "lossy:" -l "width:" -l del,delete -l high -l tag -l "fps:" -o "a:l:w:f:dht" -- "$@")
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use_gifski=""
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del_after=""
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maxsize=""
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lossiness=""
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maxwidthski=""
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giftagopt=""
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giftag=""
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fps=10
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alert=5000
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eval set -- "$args"
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while [ $# -ge 1 ]; do
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case "$1" in
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--)
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# No more options left.
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shift
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break
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;;
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-d|--del|--delete)
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# Delete after
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del_after=true
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shift
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;;
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-h|--high)
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#High Quality, use gifski
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use_gifski=true
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giftag="${giftag}-h"
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shift
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;;
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-w|--width)
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maxsize="-vf scale=$2:-1"
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maxwidthski="-W $2"
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giftag="${giftag}-w$2"
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shift 2
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;;
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-t|--tag)
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# mark with a quality tag
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giftagopt="true"
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shift
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;;
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-l|--lossy)
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# Use giflossy parameter
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lossiness="--lossy=$2"
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giftag="${giftag}-l$2"
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shift 2
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;;
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-f|--fps)
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# select fps
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fps="$2"
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giftag="${giftag}-f$2"
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shift 2
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;;
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-a|--alert)
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# set size alert
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alert="$2"
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shift 2
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;;
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esac
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done
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# Done Parsing, all that's left are the filenames
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movies="$*"
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if [[ -z "$movies" ]]; then
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echo "$(tput setaf 1)No input files given. Example: v2gif file [file...] [-w <max width (pixels)>] [-l <lossy level>] < $(tput sgr 0)"
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return 1
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fi
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# Prepare the quality tag if requested.
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[[ -z "$giftag" ]] && giftag="-default"
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[[ -z "$giftagopt" ]] && giftag=""
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for file in $movies ; do
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output_file="${file%.*}${giftag}.gif"
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echo "$(tput setaf 2)Creating $output_file ...$(tput sgr 0)"
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if [[ "$use_gifski" = "true" ]] ; then
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# I trust @pornel to do his own resizing optimization choices
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ffmpeg -loglevel panic -i $file -r $fps -vcodec png v2gif-tmp-%05d.png && \
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gifski $maxwidthski --fps $fps -o $output_file v2gif-tmp-*.png || return 2
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else
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ffmpeg -loglevel panic -i $file $maxsize -r $fps -vcodec png v2gif-tmp-%05d.png && \
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convert +dither -layers Optimize v2gif-tmp-*.png GIF:- | \
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gifsicle $lossiness --no-warnings --colors 256 --delay=$((100/fps)) --loop --optimize=3 --multifile - > $output_file || return 2
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fi
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rm v2gif-tmp-*.png
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# Checking if the file is bigger than Twitter likes and warn
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if [[ $alert -gt 0 ]] ; then
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out_size=$(wc --bytes < $output_file)
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if [[ $out_size -gt $(( alert * 1000 )) ]] ; then
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echo "$(tput setaf 3)Warning: $output_file is $((out_size/1000))kb, keeping $file even if --del requested.$(tput sgr 0)"
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del_after=""
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fi
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fi
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[[ "$del_after" = "true" ]] && rm $file
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done
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echo "$(tput setaf 2)Done.$(tput sgr 0)"
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}
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