Show Google Drive video on a website using service account - php

Question

I'm trying to get a video from my google drive account and publish it on my website.
The idea is to authorize the access to the file using a service account, so the video will be "public" accessible without the user using his google credentials.
Right now for the images I download them and the show it from my server, but due to storage space I would prefer not doing the same for videos
Here's my code:
$client = getGoogleClient(); // Specify the CLIENT_ID of the app that accesses the backend
$service = new Google_Service_Drive($client);
switch ($type) {
case 1: //video
$startPos=strrpos($url['URL'], "file/d")+7;
if($startPos>7)
{
$endPos=strrpos($url['URL'],"/");
$url=substr($url['URL'],$startPos,$endPos-$startPos); //its the file id
}
// Get files from our request
$file = $service->files->get($url,array("fields"=>"webContentLink"));
$customData=$file->webContentLink;
$customclass="hasVideo";
break;
case 3: //img
if(is_null($img))
{
//we have to donwload the file and store it temporaly
//find img id
$startPos=strrpos($url['URL'], "file/d")+7;
if($startPos>7)
{
$endPos=strrpos($url['URL'],"/");
$url=substr($url['URL'],$startPos,$endPos-$startPos);
$content = $service->files->get($url, array("alt" => "media"));
// Open file handle for output.
$filePath="./cachedFiles/".uniqid().".jpg";
$outHandle = fopen($filePath, "w+");
// Until we have reached the EOF, read 1024 bytes at a time and write to the output file handle.
while (!$content->getBody()->eof())
fwrite($outHandle, $content->getBody()->read(1024));
// Close output file handle.
fclose($outHandle);
$connection->runQuery("UPDATE File_Elemento SET cachedFile='".$filePath."', lastCached='".date('Y-m-d H:m:s')."' WHERE ID=".$ID);
}
else
$type=0;
}
else
$filePath=$img;
require_once('./ImageCache/ImageCache.php');
$imagecache = new ImageCache\ImageCache();
$imagecache->cached_image_directory = dirname(__FILE__) . '/cachedImg';
$filePath = $imagecache->cache( $filePath );
break;
default:
break;
}
echo '<a onclick="showDetail(this,\''.$customData.'\')" class="grid-item '.($subject ? $subject : "Generico").' '.($customclass!="" ? $customclass : "").'"><div class="card newsCard">'.($type==3 ? '<img class="lazy-load imgPrev" data-src="'.$filePath.'">' : "").'<h3>'.$school.'</h3><h1>'.$name.'</h1>';
echo '<div class="prev">'.$subject.'</div><span class="goin mainColor">Visualizza</span></div></a>';
right now I tried to get the webContentLink and then put the url I get as source for a video tag, but I get a 403 error, so still I didn't authorize the access using the service account
Any help would be appreciated

Answer 1

Embedding the webContentLink to your website won't make this publicly available. The webContentLink is as restricted as the file itself: it can only be accessed by users with which the file has been shared.
So you should do one of these:
Make this video public (via Permissions: create, or through the UI itself) (role: reader and type: anyone).
Download it serve it from your server, as with your images.
Related:
Generating a downloadable link for a private file uploaded in the Google drive