Canon EOS 90D DSLR Camera with 18-135mm Lens - Manual (Page 294)

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Movie Recording Quality Settings
Total Movie Recording Time and File Size Per Minute
For details on fi le sizes and the recording time available at each movie
recording size, see = 618.
Movie Recording Time Limit
 When recording non-High Frame Rate movies
The maximum recording time per movie is 29 min. 59 sec. Once 29 min.
59 sec. is reached, recording automatically stops. You can start recording
a movie again by pressing the movie shooting button (which records the
movie as a new fi le).
 When recording High Frame Rate movies
The maximum recording time per movie is 7 min. 29 sec. Once 7 min.
29 sec. is reached, recording automatically stops. You can start recording
a High Frame Rate movie again by pressing the movie shooting button
(which records the movie as a new fi le).