1.) It depends on the quality of the video...refer to these charts.
2.) It depends on the quality of the audio...see above.
3.) Anywhere...802.11b is universal. You just have to be within range of a WiFi signal.
4.) I don't know what sites you are referring to, but most sites are not restricted/limited by country.
Hope this helps,
This thread is just for some quick questions.
How many hours of video can you put on a 1, 2 or 4GB memory pro duo card?
How many hours of music can you put on a 1, 2 or 4GB memory pro duo card?
Can the internet only work in America or can it work anywhere in the world?
And, how about the video option. Can any video-transfering site be used anywhere in the world?