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convert script(1) recordings to gif
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#!/bin/bash | |
# Changelog | |
# --------- | |
# | |
# origin from https://gist.github.com/tg123/6240128 | |
# modified by marek-saji: | |
# - use single loop | |
# - skip frames delayed by 0 | |
# - loop animation with additional delay after every loop | |
# - use xwd(1) for much faster screen capturing | |
# - cleanup on non-successful exit | |
# - open gif, when ready | |
# - launch gnome-terminal(1) if $WINDOWID is empty | |
# | |
# origin from http://blog.fedora-fr.org/metal3d/post/typescript-to-gif | |
# modified by tgic to specified output file | |
# exit on first error | |
set -e | |
if [ -z "$WINDOWID" ] | |
then | |
test -z "$COLUMNS" && COLUMNS=$( tput cols 2>/dev/null ) | |
test -z "$LINES" && LINES=$( tput lines 2>/dev/null ) | |
exec gnome-terminal \ | |
--geometry="${COLUMNS}x${LINES}" \ | |
--working-directory="$PWD" \ | |
--command="$0 $*" | |
fi | |
# cleanup on non-successful exit | |
trap 'test -d $WORKDIR && rm -rf $WORKDIR' INT TERM QUIT EXIT | |
# http://www.imagemagick.org/script/command-line-options.php#limit | |
CONVERTARG="-monitor -limit memory 32MiB -limit map 64MiB" | |
PAUSEBETWEENLOOPS=500 | |
TIMING=$1 | |
SCRIPT=$2 | |
OUTPUT=$3 | |
if [ ! -f "$TIMING" ] || [ ! -f "$SCRIPT" ] || [ "$OUTPUT" == "" ] | |
then | |
echo "usage: $0 TIMING SCRIPT OUTPUT" | |
exit | |
fi | |
WORKDIR=$(mktemp -d typescript-to-gif.XXXXXXXXXX) | |
WORKSCRIPT=$WORKDIR/typescript | |
cp $SCRIPT $WORKSCRIPT | |
#remove first line | |
sed -i '1d' $WORKSCRIPT | |
#clear screen | |
clear | |
sleep 1 | |
curr=0 | |
i=0 | |
frames= | |
while read timing chars | |
do | |
timing=$( echo "$timing" | awk -F. '{ print $1 substr($2, 1, 2) }' ) | |
dd if=$WORKSCRIPT bs=1 skip=$curr count=$chars 2>/dev/null | |
if [ "0" != "$timing" ] | |
then | |
#convert to gif frame with a nice frame-number | |
file=$WORKDIR/$i.xwd | |
xwd -id $WINDOWID > $file | |
frames=$frames" -delay $timing $file" | |
fi | |
#and move to next position | |
curr=$(( curr+chars )) | |
i=$(( i+1 )) | |
done < $TIMING | |
frames=$frames" -delay $PAUSEBETWEENLOOPS $file" | |
echo | |
echo 'Create gif file...' | |
convert $CONVERTARG $frames -loop 0 -coalesce -layers Optimize $OUTPUT | |
OPENER="$( | |
which xdg-open 2>/dev/null || # Linux | |
which open 2>/dev/null || # MacOSX | |
echo printf "gif is ready: %s\n" | |
)" | |
nohup $OPENER $OUTPUT >/dev/null 2>&1 & |
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