Upload video using LinkedIn V2 API - php

Question

I am trying to upload a video using LinkedIn API V2 but I am unable to post successfully video to my LinkedIn Individual Account.
Please help.
Returning Below Response from LinkedIn API:
SignatureDoesNotMatch
The request signature we calculated does not match the signature you provided. Check your key and signing method.
$person_id=LINKEDIN_ACCOUNT_ID;
$access_token= LINKEDIN_ACCESS_TOKEN;
$share_text='Video Upload and Share Text';
$author = "urn:li:person:".$person_id;
$r_url='https://api.linkedin.com/v2/assets?action=registerUpload';
$r_params = array(
'registerUploadRequest'=>array(
'recipes'=>array('urn:li:digitalmediaRecipe:feedshare-video'),
'owner' => $author,
)
);
$handle = curl_init();
curl_setopt($handle, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($handle, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($handle, CURLOPT_URL, $r_url);
curl_setopt($handle, CURLOPT_VERBOSE, FALSE);
$header = array();
$header[] ='Authorization : Bearer '.$access_token;
$header[] = 'Content-Type: application/json; charset=UTF-8';
curl_setopt($handle, CURLOPT_HTTPHEADER, $header);
curl_setopt($handle, CURLOPT_POSTFIELDS, json_encode($r_params));
$json1 = curl_exec($handle);
$json1=json_decode($json1,true);
if($json1['value']['uploadMechanism']['com.linkedin.digitalmedia.uploading.MediaUploadHttpRequest']['uploadUrl']){
$target_url=$json1['value']['uploadMechanism']['com.linkedin.digitalmedia.uploading.MediaUploadHttpRequest']['uploadUrl'];
$return_header=$json1['value']['uploadMechanism']['com.linkedin.digitalmedia.uploading.MediaUploadHttpRequest']['headers'];
$parts = parse_url($target_url);
parse_str($parts['query'], $query);
$amz_signature=$query['X-Amz-Signature'];
$target_header=array();
$target_header[]='Host: video-uploads-prod.s3-accelerate.amazonaws.com';
$target_header[]="Content-Type:".trim($return_header['Content-Type']);
$target_header[]="x-amz-server-side-encryption:".trim($return_header['x-amz-server-side-encryption']);
$target_header[]='x-amz-server-side-encryption-aws-kms-key-id:'.trim($return_header['x-amz-server-side-encryption-aws-kms-key-id']);
$video_path = DIR_PATH_TO_VIDEO_FILE.'example_video.mp4';
$post_data=array('file'=>$video_path);
$ch = curl_init();
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_URL,$target_url);
curl_setopt($ch, CURLOPT_VERBOSE, FALSE);
curl_setopt($ch, CURLOPT_HTTPHEADER, $target_header);
curl_setopt($ch, CURLOPT_POSTFIELDS, file_get_contents($video_path));
$json2=curl_exec ($ch);
curl_close ($ch);
$json2=json_decode($json2,true);
$media_id=str_replace('urn:li:digitalmediaAsset:','', $json1['value']['asset']);
$return_data=array();
$check_url = 'https://api.linkedin.com/v2/assets/'.$media_id;
$handle = curl_init();
curl_setopt($handle, CURLOPT_FOLLOWLOCATION, TRUE);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($handle, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($handle, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($handle, CURLOPT_HEADER, FALSE);
curl_setopt($handle, CURLOPT_URL, $check_url);
$header = array();
$header[] ='Authorization : Bearer '.$access_token;
$header[] = 'Content-Type: application/json; charset=UTF-8';
curl_setopt($handle, CURLOPT_HTTPHEADER,$header);
$return_data= curl_exec($handle);
$return_data= json_decode($return_data,true);
$author = "urn:li:person:".$person_id;
$post_url = 'https://api.linkedin.com/v2/ugcPosts';
$media_data=array();
$media_data[0]=array(
'status'=>'READY',
'description'=>array('text'=>'Official LinkedIn Blog'),
'media'=>$media_id,
'title'=>array('text'=>"Official LinkedIn Blog"),
);
$params = array(
'author' => $author,
'lifecycleState' => 'PUBLISHED',
'specificContent' => array(
'com.linkedin.ugc.ShareContent' => array(
'shareCommentary' => array(
'text' => "Video media set in post",
),
'shareMediaCategory' => 'VIDEO',
'media'=>$media_data,
'originalUrl'=>'https://www.google.com'
)
),
'visibility' => array(
'com.linkedin.ugc.MemberNetworkVisibility' => 'PUBLIC'
)
);
$handle = curl_init();
curl_setopt($handle, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($handle, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($handle, CURLOPT_URL, $post_url);
curl_setopt($handle, CURLOPT_VERBOSE, FALSE);
curl_setopt($handle, CURLOPT_POSTFIELDS, json_encode($params));
$header = array();
$header[] ='Authorization : Bearer '.$access_token;
$header[] = 'Content-Type: application/json; charset=UTF-8';
$header[] = 'X-Restli-Protocol-Version:2.0.0';
curl_setopt($handle, CURLOPT_HTTPHEADER, $header);
$json3 = curl_exec($handle);
$json3=json_decode($json3);
I need to upload video post to LinkedIn Account successfully but I am unable to understand that from LinkedIn documentation too. I have tried so much but not succeed.
Please someone who has successfully uploaded a video with V2 then please help.

Answer 1

Hi linkedin not released video uploads yet.You can use the article EP( "shareMediaCategory": "ARTICLE") to send videos to linkedin

Answer 2

I make use of the LinkedIn API from Zoonman to do the client post request, but this is out of the scope of the question.
Because i could not get the php curl functions to work properly, i am using the command line interface to do the request, and it works! See my code below.
BUT. even tough the upload works. When i do a request to get the status of the upload, it is still "WAITING_UPLOAD". So i think #augustine jenin is right, that it is not supported yet. (may 2019)
<?php
// first register upload
$data = [
"registerUploadRequest" => [
"recipes" => [
"urn:li:digitalmediaRecipe:feedshare-video"
],
"owner" => "urn:li:organization:" . $liPageId,
"serviceRelationships"=> [
[
"relationshipType"=> "OWNER",
"identifier" => "urn:li:userGeneratedContent"
]
]
]
];
$register = $client->post('assets?action=registerUpload', $data);
// get upload url and header
$uploadUrl = $register["value"]["uploadMechanism"]["com.linkedin.digitalmedia.uploading.MediaUploadHttpRequest"]["uploadUrl"];
$headers = $register["value"]["uploadMechanism"]["com.linkedin.digitalmedia.uploading.MediaUploadHttpRequest"]["headers"];
$curlHeaders = "";
foreach($headers as $htype => $header) {
$curlHeaders .= ' -H "' . $htype . ':' . $header . '"';
}
// go upload the image to the url
$filePath = "/path/to/your/file";
$command = '/usr/bin/curl -v';
$command .= $curlHeaders;
$command .= ' --upload-file \'' . $filePath . '\' \'' . $uploadUrl . '\'';
// try it yourself by running this on the command line
//echo $command;
shell_exec($command);
?>