/[amv]/frames.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Revision 17 - (show annotations)
Sat Jul 21 12:50:32 2007 UTC (16 years, 11 months ago) by dpavlin
File MIME type: text/plain
File size: 1470 byte(s)
command-line options --jpeg-q and --repeat, better output
1 #!/usr/bin/perl -w
2
3 # frames.pl
4 #
5 # 07/19/07 18:06:13 CEST Dobrica Pavlinusic <dpavlin@rot13.org>
6
7 use strict;
8
9 use GD;
10 use File::Path;
11 use Getopt::Long;
12
13 my $tmp = '/tmp/frames';
14 my $out = '/tmp/frames.avi';
15 my $jpeg_q = 20;
16 my $repeat = 1;
17
18 GetOptions(
19 "jpeg-q=i" => \$jpeg_q,
20 "repeat=i" => \$repeat,
21 );
22
23 rmtree $tmp if -e $tmp;
24 mkpath $tmp || die "can't create $tmp: $!";
25
26 my $im = new GD::Image( 160, 120 );
27
28 my $im_col;
29
30 sub col {
31 my $hex = shift;
32 $hex = lc($hex);
33 die "not hex: $hex" unless ( $hex =~ m/^([0-9a-f])([0-9a-f])([0-9a-f])$/i );
34 my ( $r,$g,$b ) = ( hex($1 . $1),hex($2 . $2),hex($3 . $3) );
35 if ( ! defined( $im_col->{$hex} ) ) {
36 my $col = $im->colorAllocate( $r, $g, $b );
37 warn "creating color $col $hex\n";
38 $im_col->{$hex} = $col;
39 }
40 return $im_col->{$hex};
41 }
42
43 my @cols = (
44 '000',
45 'f00',
46 '0f0',
47 '00f',
48 'ff0',
49 '0ff',
50 'fff',
51 );
52
53 my $frame = 1;
54
55 foreach my $c ( @cols ) {
56 foreach ( 1 .. $repeat ) {
57 $im->fill(50,50, col($c) );
58 my $path = sprintf('%s/%03d.jpg', $tmp, $frame++);
59 open(my $fh, '>', $path) || die "can't open $path: $!";
60 print $fh $im->jpeg( $jpeg_q ) || die "can't save picture $path: $!";
61 close($fh) || die "can't close picture $path: $!";
62 warn "frame $frame $jpeg_q% ", -s $path, " bytes\n";
63 }
64 }
65
66 my $cmd = "ffmpeg -i $tmp/%03d.jpg -r 16 -y $out";
67 warn "## $cmd\n";
68 system($cmd) == 0 or die "encoding failed: $?";
69
70 #rmdir $tmp || die "can't remove $tmp: $!";
71
72 warn "created $out ", -s $out, " bytes\n";

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