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June 14, 2017 08:26
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create thresholded images from mp4 file.
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| #!/usr/bin/env zsh | |
| if [ $# -ne 2 ]; then | |
| echo "$# args specified" 1>&2 | |
| echo "usage: sh ./mp42png.sh mp4_filename output_directory" 1>&2 | |
| exit 1 | |
| fi | |
| ( mkdir -p $2 && rm -rf $2 && ffmpeg -i $1 -r 1 -vcodec png $2/%05d.png && mogrify -threshold 50% $2/*.png ) |
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