no thumb generated on upload

I dont get any thumbs on my site when uploading..title only

I am with the same problem.
Appears the message "Error occurs while uploading file" in admin - channel
Not upload images from admin.

Pleace let me know your URL

Error occurs admin. It functioned well for months.
It stopped without reason

If you are using vShare 2.6

Login to admin area = > Site Configuration = > Miscellaneous Settings = > Create Thumbnail with = > mplayer,ffmpeg,ffmpeg-php

(try with all) = > save

After that ,Video Management = > click on the video = > Create Thumb (0n the bottomm)