There is no actual adapter that I have ever found that you could use to switch from Firewire to HDMI. Probably because they both really operate on very different standards. HDMI (High-Definition Multimedia Interface) is one of the fastest (hard wire) interfaces out there and is capable of handling 5 Gbps while IEEE1394 (Firewire) is only capable of 400 Mbps. There is an IEEE 1394b protocol that can handle up to 800 Mbps put the most common one is 1394a. Needless to say these would not really complement each other. The other issue is that Firewire utilizes 4 contacts (6 with power) while HDMI uses 19 contacts. There must be some reason why they can’t interface these two together. HDMI is however backward compatible with DVI.
From what I read, HDMI will probably end up being the future’s universal interface of choice because it can handle everything and anything from simple 2-channel digital sound to the very demanding 720p, 1080i, and even 1080p HD signals and still have plenty of headroom for future technologies.
Youre only chance to interface you camera to your TV would be if you had some other kind of attached unit such as a DVD player, cable box or an exotic stereo amp that excepted a Firewire plug. Otherwise you would be regulated to S-video or Component video connections.
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