facebook An access token is required to request this resource - facebook

Question

I am using facebook app to upload videos to user walls.
Note:
I have user permission for publish.
Script is fine and works for small videos with success.
I have user extended token with validity 60 days and I debugged my token and its fine with validity and have posting permissions.
my script for posting is working fine with small videos.
ISSUE
When I try to upload more than 100 MB video with only 5 or 6 min length I receive following api errors.
An access token is required to request this resource.
An active access token must be used to query information about the current user.
NOTE
When I apply small videos it works successfully.
TEST
I added same video with same length with two different sizes one is 720P with ~121MB and other is 480P with ~42MB both are same video.
But 480P with ~42MB uploaded successfully and 720P with ~121MB failed and api throws this exactly error in error log
An access token is required to request this resource.
$facebook->setAccessToken($access_token);
$facebook->setFileUploadSupport(true);
$data = $facebook->api('/'.$user_id.'/videos', 'post', $args);

Answer 1

The issue was resolved.
We placed this as a bug in facebook bug.
We used the code provided by Facebook support team and issue was resolved.
Facebook support response:
"We were not able to replicate this issue.
If you are still experiencing issues, can you setup a testbench on your server and run the below example to verify your implementation? If you can provide a link to the testbench with the modified code below, that would be helpful in replicating this issue.
Main code:
https://github.com/eosgood/fbphpsdk
Modification for video post:
https://gist.github.com/anonymous/6872121
We tested this on our servers with a 177MB MKV video without any failures."