/**
* Detect and transcode encoding of a string into UTF-8 or another given encoding (using iconv instead the less reliable mb_convert_encoding)
*
* @param string $contents the string to be analysed and to be converted (as reference)
* @param string $encoding_to the target encoding
* @param string $detect_order the list of encodings in a specicific order
*
* @return string the new content
*
* @since 1.1.0
*
* @author Ralf Erlebach
*/
function transcodeSubtitle($contents, $encoding_to = 'UTF-8', $detect_order = null)
{
// $encoding_to is explicitely given as null, there is nothing to do
if (!$encoding_to) {
return $contents;
}
// Get the detect order
if ($detect_order == null) {
$detect_order = getEncodings();
}
if (function_exists('mb_detect_encoding')) {
$encoding = mb_detect_encoding($contents, $detect_order, true);
} else {
// Set the assumed encoding of the string as false
$encoding = false;
// Detect bom for different encodings and strip it from the string
$bom_encoding = array('UTF-32BE' => pack("CCCC", 0x0, 0x0, 0xfe, 0xff), 'UTF-32LE' => pack("CCCC", 0xff, 0xfe, 0x0, 0x0), 'GB-18030' => pack("CCCC", 0x84, 0x31, 0x95, 0x33), 'UTF-8' => pack("CCC", 0xef, 0xbb, 0xbf), 'UTF-16BE' => pack("CC", 0xfe, 0xff), 'UTF-16LE' => pack("CC", 0xff, 0xfe));
foreach ($bom_encoding as $enc => $bom) {
if (0 == strncmp($contents, $bom, strlen($bom))) {
$contents = substr($contents, strlen($bom));
$encoding = $enc;
break;
}
}
if (!$encoding) {
// Convert to md5 for fast comparison
$md5 = md5($contents);
// Try to detect concurrent encoding and convert into UTF-8
foreach ($detect_order as $enc) {
if ($md5 === md5(@iconv($enc, $enc, $contents))) {
$encoding = $enc;
break;
}
}
}
}
// Convert the encoding
if ($encoding) {
return iconv($encoding, $encoding_to . '//IGNORE', $contents);
} else {
return false;
}
}
$vinfo['Video_FrameRate'] = 29.97;
}
// Assign $ofps Value
$ofps = " -ofps " . $vinfo['Video_FrameRate'];
// Assign $keyint Value
$keyint = round($vinfo['Video_FrameRate'] * 8);
// Assign $demuxer Value
if ($vinfo['General_Format'] == "MPEG-4") {
$demuxer = " -demuxer lavf";
}
// Display Details
echo "\n" . $nl . "Encoder Details\n" . $nl;
echo "\$video_type = {$video_type}\n";
echo "\$aspect = {$aspect}\n";
echo "\$vinfo['Original_Width'] = " . $vinfo['Original_Width'] . "{$original_width}\n";
echo "\$vinfo['Video_Width'] = " . $vinfo['Video_Width'] . "\n";
echo "\$mc = {$mc}\n";
echo "\$lavfopts = {$lavfopts}\n";
echo "\$ofps = {$ofps}\n";
echo "\$demuxer = {$demuxer}\n";
echo "\$keyint = {$keyint}\n\n";
// Get Encoder
$encodings = getEncodings($video_type, $aspect, $vinfo, $hd_overwrite);
foreach ($encodings as $encoding) {
convert($encoding, $vinfo, $vid, $vdo_path, $vdoname, $keyint, $lavfopts, $ofps, $mc, $demuxer, $aspect);
}
postThumbs($vid, $vdo_path);
postConversion($vid, $vdo_path);
// Display :: Encoder Core End
echo "\n<-- End of Script -->\n\n";
exit;