Canon EOS 1300D - Manual (Page 182)

182
General Movie Shooting Cautions
Recording and Image Quality
 If you use a card with a slow writing speed, a five-level
indicator may appear on the right of the screen during movie
shooting. It indicates how much data has not yet been
written to the card (remaining capacity of the internal buffer
memory). The slower the card, the faster the indicator will
climb upward. If the indicator becomes full, movie shooting
will stop automatically.

If the card has a fast writing speed, the indicator will either
not appear or the level (if displayed) will hardly go upward.
First, shoot a few test movies to see if the card can write fast enough.
Playback and TV Connection
 If you connect the camera to a TV set with an HDMI cable (p.226) and
shoot a movie at [1920x1080] or [1280x720], the movie being shot will
be displayed in a small size on the TV set. The movie will still be
recorded in the movie-recording size that was set.
 If you connect the camera to a TV set (p.226) and shoot a movie, the TV
set will not output any sound during the shooting. However, the sound
will be properly recorded.
Indicator