How display video thumbnails upload from attach

[sanhpv]

Can anyone tell me how to post a video from attach so that the video has a thumbnail when about to press play on a Moblie?

On the computer it has thumbnails

i have installed ffmpeg

 

[sanhpv]

help...................

 

[thomsa]

help...................

sanhpvcheck extension file to upload in /admin.php?options/groups/attachments/

 

[sanhpv]

check extension file to upload in /admin.php?options/groups/attachments/

thomsa

 

[sanhpv]

help....................................