Could not get filename correct on s3 export

[mhaisumali]

I am trying to get video from s3 URL and creating a thumbnail from the video all things are working fine but I am not able to retrieve the file real name from which it is saved in s3 bucket can anyone help ? here is the code snippet: FFMpeg::fromDisk('s3') ->open($stored) ->getFrameFromSeconds(02) ->export() ->inFormat(new X264) ->save(uniqid().'thumb.png');