12 |
|
|
13 |
my $tmp = '/tmp/frames'; |
my $tmp = '/tmp/frames'; |
14 |
my $out = '/tmp/frames.avi'; |
my $out = '/tmp/frames.avi'; |
15 |
my $jpeg_q = 20; |
my $jpeg_q = 100; |
16 |
my $repeat = 1; |
my $repeat = 1; |
17 |
|
my $vary_jpeg_q = 0; |
18 |
|
$repeat = 16; |
19 |
|
my $audio = '-i adpcm.wav -acodec adpcm_ms -ar 22050'; |
20 |
|
|
21 |
GetOptions( |
GetOptions( |
22 |
"jpeg-q=i" => \$jpeg_q, |
"jpeg-q=i" => \$jpeg_q, |
44 |
} |
} |
45 |
|
|
46 |
my @cols = ( |
my @cols = ( |
47 |
|
'fff', |
48 |
'000', |
'000', |
49 |
'f00', |
'f00', |
50 |
|
'000', |
51 |
'0f0', |
'0f0', |
52 |
|
'000', |
53 |
'00f', |
'00f', |
54 |
|
'000', |
55 |
'ff0', |
'ff0', |
56 |
|
'000', |
57 |
'0ff', |
'0ff', |
58 |
|
'000', |
59 |
'fff', |
'fff', |
60 |
); |
); |
61 |
|
|
62 |
my $frame = 1; |
my $frame = 1; |
63 |
|
|
64 |
|
sub save_jpeg { |
65 |
|
my ( $path, $q ) = @_; |
66 |
|
open(my $fh, '>', $path ) || die "can't open $path: $!"; |
67 |
|
print $fh $im->jpeg( $q ) || die "can't save picture $path: $!"; |
68 |
|
close($fh) || die "can't close picture $path: $!"; |
69 |
|
} |
70 |
|
|
71 |
foreach my $c ( @cols ) { |
foreach my $c ( @cols ) { |
72 |
foreach ( 1 .. $repeat ) { |
foreach ( 1 .. $repeat ) { |
73 |
$im->fill(50,50, col($c) ); |
$im->fill(50,50, col($c) ); |
74 |
my $path = sprintf('%s/%03d.jpg', $tmp, $frame++); |
my $path = sprintf('%s/%03d.jpg', $tmp, $frame); |
75 |
open(my $fh, '>', $path) || die "can't open $path: $!"; |
save_jpeg( $path, $jpeg_q ); |
76 |
print $fh $im->jpeg( $jpeg_q ) || die "can't save picture $path: $!"; |
|
77 |
close($fh) || die "can't close picture $path: $!"; |
if ( $vary_jpeg_q ) { |
78 |
|
foreach my $q ( 1 .. 100 ) { |
79 |
|
my $path = sprintf('%s/%03d-q%03d.jpg', $tmp, $frame, $q ); |
80 |
|
save_jpeg( $path, $q ); |
81 |
|
} |
82 |
|
} |
83 |
|
|
84 |
warn "frame $frame $jpeg_q% ", -s $path, " bytes\n"; |
warn "frame $frame $jpeg_q% ", -s $path, " bytes\n"; |
85 |
|
$frame++; |
86 |
} |
} |
87 |
} |
} |
88 |
|
|
89 |
my $cmd = "ffmpeg -i $tmp/%03d.jpg -r 16 -y $out"; |
my $cmd = "ffmpeg -i $tmp/%03d.jpg -r 16 -vcodec mjpeg $audio -y $out"; |
90 |
warn "## $cmd\n"; |
warn "## $cmd\n"; |
91 |
system($cmd) == 0 or die "encoding failed: $?"; |
system($cmd) == 0 or die "encoding failed: $?"; |
92 |
|
|