diff --git a/TOOLS/calcbpp.pl b/TOOLS/calcbpp.pl new file mode 100755 index 0000000000..067434c1e1 --- /dev/null +++ b/TOOLS/calcbpp.pl @@ -0,0 +1,21 @@ +#!/usr/bin/perl -w + +use POSIX; + +sub round { + my $v = shift; + + return floor($v + 0.5) != floor($v) ? + floor($v + 0.5) : + floor($v); +} + +if (scalar(@ARGV) < 4) { + print("Please provide a) the cropped but unscaled resolution (e.g. " . + "716x524), b) the aspect ratio (either 4/3 or 16/9 for most DVDs), " . + "c) the video bitrate in kbps (e.g. 800) and d) the movie's fps.\n"); + exit(1); +} + +($unscaled_width, $unscaled_height) = split('x', $ARGV[0]);.$encoded_at = $ARGV[1];.if ($encoded_at =~ /\//) {. my @a = split(/\//, $encoded_at);. $encoded_at = $a[0] / $a[1];.}.$scaled_width = $unscaled_width * ($encoded_at / (5/4));.$scaled_height = $unscaled_height;.$picture_ar = $scaled_width / $scaled_height;.($bps, $fps) = @ARGV[2, 3];..printf("Prescaled picture: %dx%d, AR %.2f\n", $scaled_width, $scaled_height,. $picture_ar);.for ($width = 720; $width >= 320; $width -= 16) {. $height = 16 * round($width / $picture_ar / 16);. $diff = round($width / $picture_ar - $height);. $new_ar = $width / $height;. $picture_ar_error = abs(100 - $picture_ar / $new_ar * 100);. printf("${width}x${height}, diff % 3d, new AR %.2f, AR error %.2f%% " .. "scale=%d:%d bpp: %.3f\n", $diff, $new_ar, $picture_ar_error, $width,. $height, ($bps * 1000) / ($width * $height * $fps));.}. + diff --git a/TOOLS/countquant.pl b/TOOLS/countquant.pl new file mode 100755 index 0000000000..2b19c5b79d --- /dev/null +++ b/TOOLS/countquant.pl @@ -0,0 +1,37 @@ +#!/usr/bin/perl -w + +sub display_quants { + $frames = 0; + foreach $key (sort(keys(%quants))) { + $frames += $quants{$key}; + } + foreach $key (sort({ $a <=> $b } keys(%quants))) { + printf("q=%d:\t% 6d, % 6.2f%%\n", $key, $quants{$key}, $quants{$key} * + 100 / $frames); + } + print("$lines lines processed, $frames frames found\n"); + printf("average quant. is: %f\n", $quant_total/$frames); +} + +$lines = 0; +$thislines = 0; +$quant_total = 0; + +while () { + $lines++; + $thislines++; + if (/ q:([0-9]+) /) { + $quants{$1}++; + } elsif (/ q:(([0-9]+)\.[0-9]+) /) { + $quants{$2}++; + $quant_total += $1; + } + if ((scalar(@ARGV) > 0) && ($thislines > $ARGV[0])) { + display_quants(); + $thislines = 0; + } +} + +display_quants(); + +