Add Byte-Range to Gallery2 php code for iPhone Video

So I'd like my gallery to work on the iPhone. So far pictures work great, but video, not so good.

The problem is the code doesn't handle byte-ranges. Since the new G3 looks to be more simple, I'm guessing it won't handle video, so I'd like to modify my gallery to do it, but I'm stuck, because the iphone uses byte-ranges for mp3 and videos.

I know what to do in general. I need change the basic gallery.class around lines 870 based on if $_SERVER['HTTP_RANGE']. If its set the code needs to look at the range requested, and send some additional headers and output the file.

I have the code based on a few sites I've found that can read a file and deliver in via byte-ranges, but now I need to figure out how to add it to my gallery.

Do I add a new class base on gallery? Make edits to gallery.class?

And how would I find out if the gallery has been requested to send a range. I can't read $_SERVER within the gallery class.

This would be really cool if i could get it to work with my iphone. I inserted the above code and then went to my video on my iphone and the video does not appear. Does this still work for you on G2 2.3?

Steps I did,

Installed G2.3,
Configured ffmpeg plugin.
Activate ffmpeg plugin.
Added m4v to video/mp4 mime type.
Added Video from local server (the file was too big to upload via web page.)
Edited Movie, Added Height and Width (480X272)
Changed /gallery2/modules/core/classes/Gallery.class
lines 862 - 878 with the code above.

Be sure you have a movie that works on the iPhone. I did Quicktime Export "Movie to iPhone" for my site.

Some changes have to be made to the code from Arnoldjw to make videos work for the IPhone...

        if (file_exists($path) && $fd = fopen($path, 'rb')) {
                if(!isset($_SERVER['HTTP_RANGE'])) //John added if test if HTTP_RANGE is Requested
                {
                        header('Content-Disposition: inline; filename="' . $filename . '"');
                        header('Last-Modified: ' . $lastModified);
                        header('Content-type: ' . $mimeType);
                        header('Content-length: ' . $contentLength);
                        header('Expires: ' . $this->getHttpDate(2147483647));
                        header('Cache-Control: public');
                        set_magic_quotes_runtime(0);
                        set_time_limit(0);
                        while (!feof($fd)) {
                        print fread($fd, 4096);
                        }
                        fclose($fd);

                }
                else
                {
                        /** HTTP_RANGE Code to Send Byte Range for Streaming **/
                        // First get value from range
                        list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
                        $range  = explode('-', $range);
                        $begin = $range[0];
                        $end   = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $contentLength;
                        $length = $end - $contentLength + 1; // Calculate new content length

                        //See if value range requested and return Partial Content headers
                        if($begin>0||$end<$contentLength){
                                //header("Accept-Ranges: $begin-$contentLength");
                                header("Accept-Ranges: bytes");
                                header('HTTP/1.1 206 Partial Content');
                                header("Content-Range: bytes $begin-$end/$contentLength");
                        }

                        //Return Remaining Headers
                        header('Content-Disposition: inline; filename="' . $filename . '"');
                        header("Last-Modified: $lastModified");
                        header("Content-type: $mimeType");
                        header('Content-length: '.($contentLength));
                        $etag = md5_file($path);
                        header('Etag: "'.$etag.'"');
                        header('Expires: ' . $this->getHttpDate(2147483647));
                        header('Cache-Control: public');

                        $cur=$begin;
                        fseek($fd,$begin,0);

                        while(!feof($fd)&&$cur<$end&&(connection_status()==0))
                        {
                                print fread($fd,min(1024*16,$end-$cur+1));
                                $cur+=1024*16;
                        }

                }
                return true;
        }

This code works fine with Gallery 2.3.1 and the IPhone OS 3.1

The following 3 lines have to be changed...

[...]
header("Accept-Ranges: bytes");
header('HTTP/1.1 206 Partial Content');
[...]
print fread($fd,min(1024*16,$end-$cur+1));

I don´t know whether this is totally correct and conform to standards, but the apache throws no errors and the videostreaming works fine on the phone and any browser.

I also don´t think that

header('Content-length: '.($contentLength));

is necessary or even correct, as my Apache adds this header on its own with the correct value.
$contentLength should be - at least in the else branch - wrong. The value should be $end-$begin+1.

Regards

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I've created a true module for this topic.
http://www.flashyourweb.com/filemgmt/index.php?id=51