Canon EOS RP Instruction Manual page 460

Setting the Movie Recording Size
Frame rate (fps: frame per second)
z
[ 8 ] 59.94fps / [ 6 ] 29.97fps
For areas where the TV system is NTSC (North America, Japan,
South Korea, Mexico, etc.).
[ 7 ] 50.00fps / [ 5 ] 25.00fps
For areas where the TV system is PAL (Europe, Russia, China,
Australia, etc.).
[ 4 ] 23.98fps
Mainly for motion pictures. 4 (23.98fps) is available when [ 5 :
Video system] is set to [For NTSC].
Compression method
z
[ X ] IPB (Standard)
Compresses multiple frames at a time efficiently for recording.
[ ] IPB (Light)
Since the movie is recorded at a bit rate lower than with IPB (Standard),
the file size will be smaller than with IPB (Standard) and the playback
compatibility will be higher. This will make the possible recording
time longer than with IPB (Standard) (with a card having the same
capacity).
Movie recording format
z
[ C ] MP4
All movies you shoot with the camera are recorded as movie files in
MP4 format (file extension ".MP4").
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