turn a video to frames and verify works.sh

#Ref: https://stackoverflow.com/questions/169511/how-do-i-iterate-over-a-range-of-numbers-defined-by-variables-in-bash
#Ref: https://stackoverflow.com/questions/30384634/how-to-split-a-video-into-individual-encoded-frames
#Ref: https://superuser.com/questions/678897/extract-hevc-bitstream-with-ffmpeg
input="newvideo8bit.mp4"
outDir="out3"
output="magic.h265"
rm -rf $outDir
mkdir $outDir
ffmpeg -i $input -f image2 -vcodec copy -bsf hevc_mp4toannexb $outDir/%d.h265
END=249
rm -rf $output
touch $output
for ((i=1;i<=END;i++)); do
    cat $outDir/$i.h265 >> $output
done
echo "Done"