Hi,
To manually add a new video in the system, you need to add the following custom fields to your post:
wpt_clip_url:
http://domain.com/clips/149310/clips.flv => url of the video
wpt_feed_id: 81 => feed id related to this video (you may create a dummy feeds to get a new id)
wpt_video_id: 17477 => Unique of this video
wpt_screen: /81/17477/01.jpg => local path and filename of the video thumbs must be /wpt_feed_id/wpt_video_id/name.jpg
wpt_screen_url:
http://domain.com/clips/149310/001.jpg => url of the original thumbs
wpt_height: 640 => Height of the video
wpt_width: 480 => Width of the video