[Haskell-cafe] swf flv decoder in haskell

Hi, I have to add some monitoring functions to a shockwave/flash decoder: to precisely evaluate the play buffer (the bar showing download information when you watch a YouTube video for example). I wanted to go for either swfdec or gnash, but as I enjoy Haskell so much, I wonder if there is some open source project on this subject? (even if not all features are supported) Thanks in advance for your advices. Louis Plissonneau