Yes.
Install Cycorder, which is free, on your jailbroken iPhone 2G or iPhone 3G allow you to record video using your iPhone.
yes
The ipod touch 4g can video chat with an iphone 4 if you have a WiFi connection.
Yes
Video is only currently available on the Iphone 3GS, the latest Iphone.
No, it does not come with a built in video camera. But it does come with a 2 megapixel picture camera. However it is possible to put a video camera by a process called jailbreaking the iPhone. You can google "how to jailbreak iPhone 3g" get many results.
Yes, iPhones can take video. If you go into the camera app, scroll to the video option and hold down the button to film.
Pretty much :? unfortunately. I have an Android from Metro PCS and I cannot take video.
No. You can only take pictures, no video capability exists.
This depends on the interpretation of the question. iPhone 3G has a camera that is capable of taking both video and still image, but Apple has limit the iPhone 3G camera to only taking still image. It is possible to take video on the iPhone 3G using Cycorder, but doing so require you to jailbreak your iPhone 3G.
To take a video from YouTube to the iPhone Whats App first open the chat window on Whats App. Next tap the arrow icon and choose what yo want to share.