Created
August 1, 2015 00:00
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Vergence converter for animated stereograms
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| #!/bin/bash | |
| # This script converts side-by-side animated stereograms between parallel and cross-eyed viewing methods. | |
| # In other words, it splits a video vertically in the middle and swaps the two halves | |
| # Dependencies: | |
| # FFmpeg | |
| # Usage: | |
| # ./cross-converter.sh <input_file> <output_file> | |
| print_usage() { | |
| echo "Usage: ./cross-converter.sh <input_file> <output_file> [options]" | |
| exit | |
| } | |
| if [[ $# -ne 2 ]]; then | |
| echo "Invalid number of arguments: $#" | |
| print_usage | |
| fi | |
| if [[ ! -f $1 ]]; then | |
| echo "$1 does not exist." | |
| print_usage | |
| fi | |
| if [ "$(which ffmpeg)" == "\n" ]; then | |
| echo "This script requires ffmpeg to be installed" | |
| echo $(which ffmpeg) | |
| exit | |
| fi | |
| # [left] and [right] labels are referring to their side in the original video | |
| ffmpeg -i "$1" -filter_complex "[0:0]crop=iw/2:ih:0:0[left];[0:0]crop=iw/2:ih:iw/2:0,pad=2*iw:ih[right];[right][left]overlay=main_w/2:0" -codec:a copy "$2" | |
| echo "Conversion complete!" |
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