/[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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Thu Jul 19 17:09:18 2007 UTC (16 years, 8 months ago) by dpavlin
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File size: 1223 byte(s)
small script to create template avi file
1 dpavlin 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    
12     my $tmp = '/tmp/frames';
13     my $out = '/tmp/frames.avi';
14    
15     mkpath $tmp || die "can't create $tmp: $!";
16    
17     my $im = new GD::Image( 160, 120 );
18    
19     my $im_col;
20    
21     sub col {
22     my $hex = shift;
23     $hex = lc($hex);
24     die "not hex: $hex" unless ( $hex =~ m/^([0-9a-f])([0-9a-f])([0-9a-f])$/i );
25     my ( $r,$g,$b ) = ( hex($1 . $1),hex($2 . $2),hex($3 . $3) );
26     if ( ! defined( $im_col->{$hex} ) ) {
27     my $col = $im->colorAllocate( $r, $g, $b );
28     warn "creating color $col $hex\n";
29     $im_col->{$hex} = $col;
30     }
31     return $im_col->{$hex};
32     }
33    
34     my @cols = (
35     '000',
36     'f00',
37     '0f0',
38     '00f',
39     'ff0',
40     '0ff',
41     'fff',
42     );
43    
44     my $frame = 1;
45    
46     foreach my $c ( @cols ) {
47     foreach ( 1 .. 16 ) {
48     $im->fill(50,50, col($c) );
49     warn "frame $frame\n";
50     my $path = sprintf('%s/%03d.jpg', $tmp, $frame++);
51     open(my $fh, '>', $path) || die "can't open $path: $!";
52     print $fh $im->jpeg(100) || die "can't save picture $path: $!";
53     close($fh) || die "can't close picture $path: $!";
54     }
55     }
56    
57     system("ffmpeg -i $tmp/%03d.jpg -r 16 -vcodec copy -y $out") == 0 or
58     die "encoding failed: $?";
59    
60     rmdir $tmp || die "can't remove $tmp: $!";

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