bbc.com: ad specs

Panel

Availability	Only on BBC News and BBC Travel
Dimensions (w x h)	336 x 700 pixels
File Size	Default GIF/JPG = 40kb max \| Initial flash = 60kb max
Polite Download	Initial file size = 60kb. Total file size = 400kb (without video), 1MB (true video streaming only, progressive download must be on user click).
Animation & Looping	30 seconds max. Dark border required.
Expanded Size	Not permitted.
Video	If video is longer than 30 seconds in length and/or larger than 1MB it must be user-initiated. Sound: always user-initiated.