After Recording A Video; From Your Gallery - LG -D405n User Manual

Video camera
TIP!
– Tap to capture an image during recording a video.
– Tap to pause recording a video.

After recording a video

In the viewfinder, tap the video thumbnail at the bottom of the screen to view the last video you took.
Tap to record another video immediately.
Tap to send your video to others or share it via social network services.
Tap to delete the video.
NOTE: Additional charges may apply when MMS messages are downloaded while
roaming.

From your Gallery

Tap Gallery. Tap on video play icon
50
to play the video.