Do you think this video is fake?

[DamageX]

What about HAMP then? Can I just download any normal video from the internet in AVI format and type HAMP.RUN videoname.avi and bang it goes full screen on my Amiga 1200 AGA playing in HAM color with audio or I need to convert the video from HD quality in AVI to a format that Amiga 1200 can handle and HAMP play it?

HAMP can only play files that are its own particular format. To produce the file you need to make an uncompressed AVI and an uncompressed WAV and then run the converter program on a PC.

tools are here: http://www.hyakushiki.net/junk/avi4hv.zip
if you run into problems getting it to work there is some guidance here:
http://eab.abime.net/showthread.php?t=48784&page=3
http://www.majsta.com/modules.php?name=News&file=article&sid=9