Cutting videos with FFMpeg

_cutting-mp4-files.md

Cutting videos with FFMpeg without re-encoding

Here's how you use it:

./cut.sh conf2.mp4 out1.mp4 00:00:05 00:53:47

cut.sh

#!/usr/bin/env bash

IN_FILE=$1
OUT_FILE=$2
START=$3
END=$4

DURATION=$(python delta.py $START $END)
echo $DURATION

ffmpeg -ss $START -i ${IN_FILE} -to $DURATION -c copy ${OUT_FILE}

delta.py

import sys

from datetime import datetime
from dateutil.relativedelta import relativedelta

s1 = sys.argv[1]
s2 = sys.argv[2]

FMT = '%H:%M:%S'
t1 = datetime.strptime(s2, FMT)
t2 = datetime.strptime(s1, FMT)

d = relativedelta(t1, t2)
res = '%02d:%02d:%02d' % (d.hours, d.minutes, d.seconds)

print(res)