.create_screenshot

#!/bin/bash

# Parses README to get code for example, runs code, and extracts a screenshot.

FRAME=14  # Which frame number to extract

eval "$(conda shell.bash hook)"
conda activate sonify

# Extract command-line call from README and run
$(sed -n '/^.. ~BEGIN~$/,/^.. ~END~$/p' README.rst | sed -E '/(^\.\. .*$|^$)/d')

# This filter extracts a frame and then resizes it
filter="select=eq(n\,$(expr $FRAME - 1)),scale=iw/2:ih/2"

ffmpeg -y -v warning -i *.mp4 -filter:v $filter -frames:v 1 screenshot.png

rm -i *.mp4