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#!/bin/bash
TMP_AVI=$(mktemp /tmp/outXXXXXXXXXX.avi)
GEOMETRY=`ffcast -s % echo "%D+%g"`
DISP=`echo $GEOMETRY | cut -d'+' -f1`
SIZE=`echo $GEOMETRY | cut -d'+' -f2`
X=`echo $GEOMETRY | cut -d'+' -f3`
Y=`echo $GEOMETRY | cut -d'+' -f4`
if [ -z "$1" ]; then
OUTPUT=out.gif
else
OUTPUT=${1}.gif
fi
ffmpeg -y -f x11grab -framerate 25 -video_size $SIZE -i $DISP+$X,$Y -codec:v huffyuv -vf crop="iw-mod(iw\,2):ih-mod(ih\,2)" $TMP_AVI
convert -set delay 10 -layers Optimize $TMP_AVI $OUTPUT
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