Generate Frames from videos using ffmpeg

generate_frames.sh

#!/bin/bash
for i in videos/webm/*.webm; do
 if [ -e "$i" ]; then
   file=`basename "$i" .webm`

   	if ! [[ "$file" =~ ^interview ]] ; then
   		mkdir -p "img/sprites/$file"
   		total_frames=`ffmpeg -i $i -vcodec copy -acodec copy -f null dev/null 2>&1 | grep 'frame=' | cut -f 3 -d ' '`
   		
         numframes=10
   		rate=`echo "scale=0; $total_frames/$numframes" | bc`

   		ffmpeg -i $i -f image2 -vf "select='not(mod(n,$rate))'" -vframes $numframes -vsync vfr -y "img/sprites/$file/frame-%d.jpeg"
   		ffmpeg -i $i -f image2 -vf "select='not(mod(n,$rate))'" -vframes 1 -vsync vfr -vf "smartblur=lr=5" -y "img/sprites/$file/blur-frame-%d.jpeg"

   	fi
 fi
done