Animated .gif not supported inside HTML widget ?

iBooks author reject my HTML widget when there is animated .gif inside,
are gif not supported ?
somebody can confirm ?
and whatthe workaround to have an animated picture inside my HTML Widget,
seems Animated png are not spported too ...
Thanks for reply
daxx

Seem to be unsupported, sorry.
See this thread:
Re: I can't seem to get my GIF files on iBook. Anyone else having this problem?
Try a simple movie in a media widget or keynote slideshow widget instead.

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