Yes, the Canon PowerShot V1 is compatible with the Samsung PRO Plus 256GB SD.
Canon PowerShot V1's SD slot accepts this card directly. Samsung PRO Plus 256GB SD is V30 class. Meets the floor for: 4K30 (30 MB/s floor). Does not meet the floor for: 4K60 (60 MB/s floor). (Peak write 90 MB/s is not evidence of sustained performance; the V30 class rating above decides this.) No setting or firmware update changes a card's rated speed class.
Limitation
Cannot record the camera's top-tier 4K (cropped) 59.94/50fps mode -- requires Video Speed Class V60 or higher. Works for standard 4K 29.97/25/23.98fps (U3 floor) and all lower-bitrate modes.
“4K (cropped) 59.94 50.00 IPB (Standard) UHS Speed Class 3 or higher Video Speed Class V60 or higher”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)