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#!/usr/bin/env perl
use v5.36;
use strict;
use warnings;
use File::Basename qw<fileparse>;
use File::Temp qw<tempdir>;
sub usage() {
die "Usage: $0 <file|url> crop1 [, crop2 ...]\n";
}
sub crop($file, $crop) {
my ($from, $x, $y, $plus, $to) = $crop =~ /^(\d+(:\d{1,2}){0,2})(-(\+)?(\d+(:\d{1,2}){0,2}))?$/;
unless ($from) {
print "Error: invalid crop '$crop' (ignoring)\n";
return;
}
my ($file_noext, $file_dir, $file_ext) = fileparse($file, qr/\.[^.]*/);
my $to_suffix = defined $to ? "_$to" : "";
my $cropfile = "${file_noext}_${from}${to_suffix}$file_ext";
if (defined $to && defined $plus) {
`ffmpeg -loglevel error -i "$file" -ss "$from" -t "${to}s" -c:v copy -c:a copy -- "$cropfile"`
} elsif (defined $to) {
`ffmpeg -loglevel error -i "$file" -ss "$from" -to "$to" -c:v copy -c:a copy -- "$cropfile"`
} else {
`ffmpeg -loglevel error -i "$file" -ss "$from" -t 20s -c:v copy -c:a copy -- "$cropfile"`
}
print "Cropped to '$cropfile'\n";
}
@ARGV > 1 or usage;
my $src = shift;
my @crops = @ARGV;
# Compute $file (either from arg or downloading it beforehand)
my $file;
if ($src =~ /^http/) {
print "Downloading '$src'...\n";
my $tmpdir = tempdir(CLEANUP => 1);
$file = `yt-dlp -P "$tmpdir" -q "$src" --exec 'echo "%(filepath)s"'` or die $!;
chomp $file;
print "Saved to '$file'\n";
} else {
$file = $src;
}
die "ERROR: File '$file' does not exist.\n" unless -f $file;
# Make crops
foreach my $crop (@crops) {
crop($file, $crop);
}
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