Canon eos rebel t1i - Manual (Page 121)

121
Shooting Movies
Set the Mode Dial to <k> to
shoot movies. The movie file
format will be MOV.
SD Cards for Movie Shooting
When shooting movies, use a card with an SD speed Class 6
“
” or higher. If you use a card with a slower SD speed
Class, the movie shooting and playback might not work
properly.
Also, a large-capacity card is recommended for movie
shooting.
About Full HD 1080
Full HD 1080 indicates compatibility with High-
Definition with 1080 vertical pixels (scanning lines).