Canon EOS M50 Mark II Advanced User's Manual page 382

8.
Save.
Select [OK] to save the current frame as a JPEG still image.
9.
Select the image to display.
Check the destination folder and image file number.
Select [View original movie] or [View extracted still image].
Caution
Frame grabbing is not possible with Full HD movies, Full HD time-lapse movies,
HD movies, or with 4K movies or 4K time-lapse movies from a different camera.
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