Canon EOS Rebel T3i Manual page 23

Movie R ecording S izes a nd F rame R ates
1920 x 1 080 2
1920 x 1 080 3
reproduc.on
1280 x 7 20 6
will b e c onformed l ater t o 3 0p o r 2 4p)
640 x 4 80 3 0p: i f y ou n eed a l onger d ura.on f or o ne
shot ( 45 m inutes a s o pposed t o 1 2 m inutes)
All f rame r ates a re p rogressive.
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4p: m ost c ommon f or N TSC d isplays
0p: f or m ore a ccurate f ast m o.on
0p: f or a s low m o.on e ffect ( frame r ate