Split an input video into multiple output video chunks

split_video.sh

#!/bin/bash
START=$(date +%s);
filename=$(basename "$1")
segment_times=$2
extension="${filename##*.}"
filename="${filename%.*}"
output=$filename_%d.$extension

ffmpeg -i "$1" -f segment -segment_times "$segment_times" -vcodec copy -acodec copy "$output"
END=$(date +%s);
echo ""
echo $((END-START)) | awk '{print int($1/60)":"int($1%60)}'
echo "`date +%Y-%m-%H_%M:%M`	$1" >> ~/capture-log.txt

fix audio sync problem
http://alien.slackbook.org/blog/fixing-audio-sync-with-ffmpeg/
https://wjwoodrow.wordpress.com/2013/02/04/correcting-for-audiovideo-sync-issues-with-the-ffmpeg-programs-itsoffset-switch/