Card performance requirements (movie recording), Performance requirements), see, Card performance requirements – Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens User Manual
Page 1055: Movie recording), Card performance requirements (movie, Recording)

Card performance requirements (movie recording) [write/read speed]
Movie recording size
8 bits
10 bits
(Canon Log 3 / HDR
PQ)
4K UHD
4K UHD cropped
59.94 fps
50.00 fps
IPB (Standard)
UHS Speed Class 3
or higher
Video Speed Class
V60 or higher
IPB (Light)
UHS Speed Class 3 or higher
29.97 fps
25.00 fps
23.98 fps
IPB (Standard)
UHS Speed Class 3 or higher
IPB (Light)
SD Speed Class 10
or higher
UHS Speed Class 3
or higher
4K UHD
Time-lapse movies
29.97 fps
25.00 fps
ALL-I
Read speed of 60 MB/sec. or higher
Full HD
High Frame Rate
movies
179.82 fps
150.00 fps
IPB (Standard)
UHS Speed Class 3
or higher
Video Speed Class
V60 or higher
IPB (Light)
UHS Speed Class 3
or higher
UHS Speed Class 3
or higher
119.88 fps
100.00 fps
IPB (Standard)
UHS Speed Class 3 or higher
IPB (Light)
SD Speed Class 10
or higher
UHS Speed Class 3
or higher
Full HD
Full HD cropped
59.94 fps
50.00 fps
IPB (Standard)
SD Speed Class 10
or higher
UHS Speed Class 3
or higher
IPB (Light)
SD Speed Class 6 or
higher
SD Speed Class 10
or higher
29.97 fps
25.00 fps
23.98 fps
IPB (Standard)
SD Speed Class 6 or higher
IPB (Light)
SD Speed Class 4 or higher
Full HD
Time-lapse movies
29.97 fps
25.00 fps
ALL-I
Read speed of 30 MB/sec. or higher
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