While downloading a video ..It suddenly stops and then start again .but after the download is completed ...The video is not playing

Hello, send a couple of links to the videos that you can download, but you do not play them.

Please, send me the information listed here: http://en.savefrom.net/user.php?info=1

Do you download via the extension SaveFrom.net Helper or the website SaveFrom.net?

For the better understanding it'll be great to see a screenshot with the error.