Canon EOS REBEL T2I Instruction Manual page 57

Shooting Function Settings
Totat Movie Recording Time and File Size Per Minute
N i_re :ra
.......
[1920x1080]
_0
[1280×720[
T0
[640x480]
[Crop 640x480] T0
12 min.
12 min.
24 min.
49 min,
330 MB/min.
49 min.
1 hr. 39 min.
330 MB/min.
165 MB/min.
After you start shooting a movie, the movie shooting wdI stop
automaticali/if the file size reaches 4 GB or if the movie length reacnes
29 rain. 59 sec. To start movie snooung again, press the <[_> button. _A
new movie file star[s being recoraea.)
The seml-transparent or 3laCK mask on the lop and bottom or on the left
and right will no-[ De recoraea.
_ With ZoomBrowser EXtlmageBrowser (provided sofwvare), you can
ex[ract a shll _mage from the movie. The still image quality wdl be as
follows: Approx. 2 megapixels at [1920×1080], approx. 1 megapixel at
[1280×720], and approx. 300.000 pixels at [640×480].
_ AF mode
The AF modes wiI[ be the same as described on pages 113-119, You
can select [Live mode], [_ Live mode], or [Quick mode], Note that
continuous focusing of a moving subject is not possible,
_ AF during %_,
When [Enabte] is set, AF is possible during movie shooting,
However, continuous autofocusing is not possible, If you autofocus
during movie shooting, you might momentarily throw the focus way
off or change the exposure,
If the AF mode is [Quick mode], AF wiii be executed in Live mode,
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