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@cattaka
Created September 28, 2018 06:26
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Convert GIF files in ODP to APNG to upload Google Slide
#!/bin/bash
if [ -z "$1" -o -z "$2" ]; then
echo "Usage: $0 <from_file> <to_file>"
exit
fi
FROM_FILE=$1
TO_FILE=$2
WORK_DIR=_tmp
WORK_FILE=_tmp.png
FFPMPEG_EX="-r 20 -plays 0 -loglevel quiet"
rm -rf ${WORK_DIR}
mkdir ${WORK_DIR}
unzip ${FROM_FILE} -d ${WORK_DIR}
for gif_file in `ls ${WORK_DIR}/Pictures/*`; do
mime=`file -bi $gif_file`
if [[ $mime = *"image/gif"* ]]; then
echo "Converting: $mime : $gif_file"
ffmpeg -y -i $gif_file -f apng $FFPMPEG_EX $WORK_FILE
cp $WORK_FILE $gif_file
else
echo "Skip: $mime : $gif_file"
fi
done
cd $WORK_DIR
rm ../$TO_FILE
zip -r ../$TO_FILE *
cd ..
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