Use sprintf when showing an unvalid error message

Signed-off-by: Suki <suki@missallsunday.com>
Add support for vimeo universal embed code
update vimeo's regex

Signed-off-by: Suki <suki@missallsunday.com>
Move the iframe code inside OYTE_Main() function

Signed-off-by: Suki <suki@missallsunday.com>