Canon EOS REBEL T8i Advanced User's Manual page 354

4K Movie Recording
Recording 4K movies requires a high-performance card. For details, see
Can Record Movies.
Recording 4K movies greatly increases the processing load, which may cause the
camera's internal temperature to increase faster or become higher than for regular
movies. If a red
stop recording the movie and let the camera cool down before removing the card.
(Do not remove the card immediately.)
From a 4K movie, you can select any frame to save as an approx. 8.3 megapixel
(3840×2160) JPEG still image to the card (
Frame Rate (fps: frame per second)
[ ] 59.94 fps/[
For areas where the TV system is NTSC (North America, Japan, South Korea, Mexico,
etc.).
[ ] 50.00 fps/[
For areas where the TV system is PAL (Europe, Russia, China, Australia, etc.).
icon appears during movie recording, the card may be hot, so
] 29.97 fps/[
] 25.00 fps
).
] 23.98 fps
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Cards That