/**
* Creates a video title
* @global string $ffmpegpath
* @param absolute_path $movieout
* @param assoc_array $title_elements
* @param integer $width
* @param integer $height
* @param integer $duration
* @param absolute_path $overlay_movie
* @return false|error_string
*/
function movie_title($movieout, $title_elements, $encoder, $duration = 8)
{
global $ffmpegpath, $fontfile, $encoders_path, $aac_experimental;
$movieout = escape_path($movieout);
$encoder_values = explode('_', $encoder);
$codec = $encoder_values[0];
$quality = $encoder_values[1];
$resolution_values = explode('x', $encoder_values[2]);
$width = $resolution_values[0];
$height = $resolution_values[1];
$encoder = $encoders_path . '/' . $codec . '_' . $quality . '.ffpreset';
// checks if the encoder file exists
if (!is_file($encoder)) {
return "encoder not found {$encoder}";
}
$drawtext_filter = '';
// draw album name
if (isset($title_elements['album'])) {
// drawtext filter cannot handle ':'
$album = str_replace(":", "\\:", escape_path($title_elements['album'], false));
/**
* fontfile : the font to use
* text : the text to display
* fontsize : the font size (determined following the video height)
* x : the horizontal position (determined following the total width (w) and the text width (text_w))
* y : the vertical position (determined following the total height (h) and the text height (text_h))
* fontcolor : the color of the text
*/
$drawtext_filter .= "drawtext=fontfile={$fontfile}: text='{$album}':fontsize=({$height}/19): x=(w-text_w)/2: y=(h)/2-(6.5*text_h):fontcolor=white, ";
}
// draw title - if title is longer than 35 char, it is split in several lines
if (isset($title_elements['title'])) {
include_once 'lib_gd.php';
$title = split_title(str_replace(":", "\\:", escape_path($title_elements['title'], false)));
foreach ($title as $index => $title_line) {
$drawtext_filter .= "drawtext=fontfile={$fontfile}: text='{$title_line}':fontsize=({$height}/11.5): x=(w-text_w)/2: y=(h)/2-((3-{$index})*({$height}/18.5)):fontcolor=white, ";
}
}
// draw the author
if (isset($title_elements['author'])) {
$author = str_replace(":", "\\:", escape_path($title_elements['author'], false));
$drawtext_filter .= "drawtext=fontfile={$fontfile}: text='{$author}': x=(w-text_w)/2: fontsize=({$height}/13): y=(h-text_h)/2+(2*text_h):fontcolor=white, ";
}
// draw the date - except if it is not required
if (isset($title_elements['date']) && $title_elements['hide_date'] != true) {
$date = str_replace(":", "\\:", escape_path($title_elements['date'], false));
$drawtext_filter .= "drawtext=fontfile={$fontfile}: text='{$date}': x=(w-text_w)/2: fontsize=({$height}/19): y=(h-text_h)/2+(6.5*text_h):fontcolor=white, ";
}
// draw copyrights
if (isset($title_elements['copyright'])) {
$copyright = str_replace(":", "\\:", escape_path($title_elements['copyright'], false));
$drawtext_filter .= "drawtext=fontfile={$fontfile}: text='{$copyright}': fontsize=({$height}/28.8): x=(w-text_w)/2: y=(h)-(4.5*text_h):fontcolor=white, ";
}
// draw organization name
if (isset($title_elements['organization'])) {
$organization = str_replace(":", "\\:", escape_path($title_elements['organization'], false));
$drawtext_filter .= "drawtext=fontfile={$fontfile}: text='{$organization}': fontsize=({$height}/28.8): x=(w-text_w)/2: y=(h)-(4*text_h):fontcolor=white, ";
}
// removes trailing ', ' from the last line
if (strlen($drawtext_filter) > 2) {
$drawtext_filter = substr($drawtext_filter, 0, -2);
}
if ($aac_experimental) {
$aac_codec = ' -acodec aac -strict experimental ';
// overwrites audio codec from encoders file
}
/*
* generates input silent audio stream for titling:
* -ar : audio sample rate
* -ac : audio channels
* -f : force audio input format (s161e required to generate the audio stream)
* -t : duration in seconds
* -i : input source
* generates input video stream for titling :
* -f : force video input format (lavfi required to generate the video stream)
* -t : duration in secondes
* -i : a colored screen with color (c) 0x... , size (s) $widthx$height and framerate (r) 25/1
* applies filters for output file
* -vf : video filters to apply
* -vpre : video preset file (settings used to encode the video)
*/
$cmd = $ffmpegpath . ' -ar 44100 -ac 2 -f s16le -t ' . $duration . ' -i /dev/zero ' . '-f lavfi -t ' . $duration . ' -i color=c=0x2578B6:s=' . $width . 'x' . $height . ':r=25 ' . '-vf "' . $drawtext_filter . '" -fpre ' . $encoder . ' ' . $aac_codec . ' -y ' . $movieout;
exec($cmd, $cmdoutput, $returncode);
print "\n{$cmd}\n";
//check returncode
if ($returncode) {
return join("\n", $cmdoutput);
}
return false;
}
function gd_image_create($title_array, $width, $height, $file)
{
global $fontfile;
global $quality;
global $fontratio;
global $linelength;
// creates the image
$img = imagecreate($width, $height);
// defines the background color
$bg_color = imagecolorallocate($img, 8, 89, 155);
// setup the text color
$txt_color['white'] = imagecolorallocate($img, 255, 255, 255);
$txt_color['blue'] = imagecolorallocate($img, 105, 139, 205);
if (isset($title_array['album'])) {
// font size relative to the global height of the image
$fontsize = $height / (32 * $fontratio);
// gd_push_text($img, $fontsize, $txt_color['blue'], wordwrap($title_array['album'], 45,"\n"), ($height * 0.25));
$dimensions = imagettfbbox($fontsize, 0, $fontfile, $title_array['album']);
$txt_height = $dimensions[1] - $dimensions[7];
// splits the string in multiple strings if its size is too long
$album = split_title($title_array['album'], $linelength * 1.27);
switch (count($album)) {
case 1:
$pct_height = 0.25;
break;
case 2:
$pct_height = 0.2;
break;
case 3:
$pct_height = 0.15;
break;
default:
$pct_height = 0.25;
break;
}
// adds each value of the array in the generated image
foreach ($album as $index => $string) {
gd_push_text($img, $fontsize, $txt_color['blue'], $string, $height * $pct_height + $index * ($txt_height + 5));
}
}
if (isset($title_array['title'])) {
$fontsize = $height / (25 * $fontratio);
$dimensions = imagettfbbox($fontsize, 0, $fontfile, $title_array['title']);
$txt_height = $dimensions[1] - $dimensions[7];
// splits the string in multiple strings if its size is too long
$title = split_title($title_array['title'], $linelength);
// adds each value of the array in the generated image
foreach ($title as $index => $string) {
gd_push_text($img, $fontsize, $txt_color['white'], $string, $height * 0.4 + $index * ($txt_height + 5));
}
}
if (isset($title_array['author'])) {
$fontsize = $height / (32 * $fontratio);
gd_push_text($img, $fontsize, $txt_color['white'], $title_array['author'], $height * 0.7);
}
if (isset($title_array['date']) && $title_array['hide_date'] != true) {
$fontsize = $height / (42 * $fontratio);
gd_push_text($img, $fontsize, $txt_color['white'], $title_array['date'], $height * 0.75);
}
if (isset($title_array['copyright']) || isset($title_array['organization'])) {
$string = $title_array['copyright'] . (isset($title_array['copyright']) && isset($title_array['organization']) ? " - " : "") . $title_array['organization'];
$fontsize = $height / (55 * $fontratio);
gd_push_text($img, $fontsize, $txt_color['blue'], escape_path($string), $height * 0.95);
}
// generates the image
return imagejpeg($img, $file, $quality);
}
