How to use AWS S3 hosted videos in feed

Ok, no answers so I gave up with the brightscript bit, couldn't figure out how to do the base64_encode part in brightscript. So I hosted my XML feeds on a linux host and created a PHP page that produces the category feed and runs a function that creates the signed AWS S3 expiring links based upon work by Tournas Dimitrios https://tournasdimitrios1.wordpress.com/2012/12/04/how-to-create-expiring-links-for-amazons-s3-with-php/. Only a few tweaks to the function to switch the organization of the URL and use & instead of &'s for the XML. The result turned out nicely, just fill in the variables with your specific info and Video files and point the categories feed to the php page.

Category1.php

<?php 

// Set header content type for XML for proper browser render
header('Content-Type: text/xml');

// ** EDIT VARIABLES BELOW **

// Set Variables
$genre = "Documentary";
$type = "Video";
$bucketName = "Your S3 Bucket"   ; 
$awsAccessKey = "Your AWS Access Key"  ; 
$awsSecretKey = "Your AWS Secret Key"  ; 

//Build Array of Video Items
$xmlContent = array (
	array (	"title" => "Title 1", 
			"desc" => "Description 1", 
			"sdImg" => "http://Image1.url", 
			"vidFile" => "/path/videofile1.mp4"),
	array (	"title" => "Title 2", 
			"desc" => "Description 2", 
			"sdImg" => "http://Image2.url", 
			"vidFile" => "/path/videofile3.mp4"),
	array (	"title" => "Title 3", 
			"desc" => "Description 3", 
			"sdImg" => "http://Image3.url", 
			"vidFile" => "/path/videofile3.mp4")
	);

// ** FINISHED EDITING VARIABLES**


// Echo initial part or XML document
		echo '<?xml version="1.0" encoding="UTF-8"?>';
		echo '<feed>';

// Loop through the rest of the XML document filling in variables
$count = 1;
foreach ($xmlContent as $video) {

	// Call function to produce expiring signed AWS S3 URL
	$objectPath = $video[vidFile] ; 
	$s3URL =  s3TempLink("$awsAccessKey" , "$awsSecretKey", "$bucketName",  "$objectPath") ; 

		echo ' <item sdImg="'. $video[sdImg] .'" hdImg="'. $video[sdImg] .'">';
		echo '  <title>'. $video[title] .'</title>';
		echo '  <contentType>'. $type .'</contentType>';
		echo '  <contentId>'. $count .'</contentId>';
		echo '  <media>';
		echo '   <streamFormat>mp4</streamFormat>';
		echo '   <streamQuality>SD</streamQuality>';
		echo '   <streamUrl>'. $s3URL .'</streamUrl>';
		echo '  </media>';
		echo '  <media>';
		echo '   <streamFormat>mp4</streamFormat>';
		echo '   <streamQuality>HD</streamQuality>';
		echo '   <streamUrl>'. $s3URL .'</streamUrl>';
		echo '  </media>';
		echo '  <synopsis>'.  $video[desc] .'</synopsis>';
		echo '  <genres>'.  $genre .'</genres>';
		echo ' </item>';
$count++;
}

// Echo last part of XML document
		echo '</feed>';

// Function to create signed expiring AWS S3 link Original by Tournas Dimitrios
	//Reference Link: https://tournasdimitrios1.wordpress.com/2012/12/04/how-to-create-expiring-links-for-amazons-s3-with-php/

function s3TempLink($awsAccessKey, $awsSecretKey, $bucketName , $objectPath , $expires = 5) {
  // Calculating expiry time
  $expires = time() + ($expires * 60) ; 
  $objectPath =  ltrim($objectPath, '/') ;
  $signature = "GET\n\n\n$expires\n".'/'.$bucketName.'/'.$objectPath ; 
  // Calculating  HMAC-sha1
  $hashedSignature = base64_encode(hash_hmac('sha1' ,$signature , $awsSecretKey , true )) ;
  // Constructing the URL
  $url = sprintf('http://s3.amazonaws.com/%s/%s', $bucketName , $objectPath);
  // Constructing the query String
  $queryString = http_build_query( array(
    'AWSAccessKeyId' => $awsAccessKey ,
    'Expires' => $expires ,
    'Signature' => $hashedSignature
            ), '', '&amp;');
    // Apending query string to URL
  return $url.'?'.$queryString ;
}

?>

Cheers!

Mark-