added channel number offset as a single command line parameter

footage_downloader/split_mov_jp4.php

@@ -32,6 +32,11 @@ set_time_limit(60*60*24);
 
 $chunksize=10000000; // 10MB 
 $startMarkerWithExif=chr(hexdec("ff")).chr(hexdec("d8")).chr(hexdec("ff")).chr(hexdec("e1"));
+if (count($_SERVER ['argv']) > 1) {
+    $chn_shift = $_SERVER ['argv'][1] + 0;
+} else {
+    $chn_shift = 0;
+}
 
 echo "<pre>\n";
 
@@ -65,6 +70,7 @@ foreach ($files as $file) {
 
 
 function split_mov($path,$mov_file,$dest,$ext,$startMarkerWithExif,$chunksize) {
+    global $chn_shift;
 
 	$path_with_name = "$path/$mov_file";
 
@@ -109,7 +115,7 @@ function split_mov($path,$mov_file,$dest,$ext,$startMarkerWithExif,$chunksize) {
 		//converting GMT a local time GMT+7
 		$DateTimeOriginal_local=strtotime($exif_data['DateTimeOriginal']);/*-25200;*/
 //		$new_file_name = $exif_data['PageNumber'] . "_" . $DateTimeOriginal_local."_".$exif_data['SubSecTimeOriginal'].".".$ext;
-		$new_file_name = $DateTimeOriginal_local."_".$exif_data['SubSecTimeOriginal']. "_". $exif_data['PageNumber'] . ".".$ext;
+		$new_file_name = $DateTimeOriginal_local."_".$exif_data['SubSecTimeOriginal']. "_". ($exif_data['PageNumber']+$chn_shift) . ".".$ext;
 
 		rename($old_file_name,"$path/$dest/$new_file_name");
 	}