Facing issue while uploading file on linux server via FTP client

I'm attempting to upload an mp4 file (112MB) to a Linux server. After a successful transfer, its size is reduced to 103MB or 80MB. It is not uploading the full size. Its Owner/Group changed automatically into root/root as well.

I've also enabled the lsyncd service. It works great after you stop the service. I reviewed the lsyncd logs but found nothing.

Can anybody help me out ?