Trim videos with ffmpeg

1_fftrim.md

Use "hh:mm:ss.mss" as the format for the timestamps if you don't want to enable fix_keyframes so that the trim will be instant. For example:

fftrim video.mp4 "01:00:03.000" "03:00:00.000"

fftrim

#!/bin/bash

if [ $# -lt 3 ]; then
	echo "Usage: fftrim <file path> <start timestamp> <end timestamp> [fix_keyframes: true|false] [output_extension=default]"
	exit 1
fi

if [ "$4" = "true" ]; then
	keyframe_arg="-async 1"
else
	keyframe_arg="-c copy"
fi

epoch_secs=$(date +%s)
filepath="$1"
ext=${filepath: -3}
filename=${filepath::-4}

if [ -n "$5" ]; then
	ext="$5"
fi


ffmpeg -i "$filepath" -ss "$2" -to "$3" $keyframe_arg "$filename.trimmed_$epoch_secs.$ext"