Not easy to know until you have downloaded them. More about iPod requirements here How to transfer to my iPod (& iTunes) - for video. There are some converters (some are free) around to convert to iPod ready size & format. iPod only accepts mpeg 4 & H.264 format videos, but also must be within a certain size, etc.

Oh, I see.
Thank you for the help, I can watch it now !
: )