Cut video from csv timestamp file

cut_with_timestamps.sh

#!/bin/bash

# we need a video and a csv file as args
INVID=$1
TSFILE=$2

# read csv file of format starttime;endtime;description
while IFS=";" read start_ts end_ts descr
do
   # for each record
    # cut video from start to end and save as description
    echo "Cutting video from ${start_ts} to ${end_ts} and saving to ${descr}.mp4"
    # with copying (may result in audio desync and video fragments)
    # ffmpeg -i $INVID -ss "${start_ts}" -to "${end_ts}" -c:v copy -c:a copy "${descr}.mp4"
    # with re-encoding. Takes longer but gives better results
    ffmpeg -nostdin -i $INVID -ss "${start_ts}" -to "${end_ts}" -c:v libx264 -preset veryfast -crf 23 -c:a aac "${descr}.mp4"
done < <(tail -n +2 $TSFILE)