Canon EOS-1D X Instruction Manual page 240

3 Setting the Movie-Recording Size
Total Movie Recording Time and File Size Per Minute
Movie-Recording
Size
654 X
A
654 W
87 X
B
87 W
C 65 X
About Movies Exceeding 4 GB
Even if you shoot a movie exceeding 4 GB, you can keep shooting
without interruption.
During movie shooting, approx. 30 sec. before the movie reaches
the 4 GB file size, the elapsed shooting time or time code displayed
in the movie-shooting image will start blinking. If you keep shooting
until the movie file size exceeds 4 GB, a new movie file will be
created automatically and the elapsed shooting time or time code
will stop blinking.
When you play back the movie, you will have to play each movie file
individually. Movie files cannot play back consecutively
automatically. After the movie playback ends, select the next movie
to be played.
Movie Shooting Time Limit
The maximum recording time of one movie clip is 29 min. 59 sec. If
the movie shooting time reaches 29 min. 59 sec., the movie shooting
will stop automatically. You can start shooting a movie again by
pressing the <B> button. (A new movie file is recorded.)
240
Total Recording Time (approx.)
4 GB Card 8 GB Card
16 min. 32 min.
5 min. 11 min.
18 min. 37 min.
6 min. 12 min.
48 min. 1 hr. 37 min.
(approx.)
16 GB Card
1 hr. 4 min. 235 MB/min.
22 min. 685 MB/min.
1 hr. 14 min. 205 MB/min.
25 min. 610 MB/min.
3 hr. 14 min. 78 MB/min.
File Size